Company lists · Data refreshed September 2026
Top 25 Groundwater monitoring companies based in the United States
RevenueBase identified 327 company matches for groundwater monitoring companies associated with the United States as of September 2026 and tracks 6,505 professional contacts across them, including 3,145 with verified work emails. Houston is the largest hub.
This list covers company matches for groundwater monitoring companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest groundwater monitoring companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,095 contacts → | ||||
Exact match “At Hach, we ensure water quality for people around the world, and every associate plays a vital role in that mission.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 197 contacts → | ||||
Exact match “Phigenics is a leading provider of safe, smart, and superior water management programs aligned with ANSI/ASHRAE Standard 188 and Centers for Medicare & Medicaid Services (CMS) QSO…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 176 contacts → | ||||
Exact match “EnviroScience is a team of over 150 expert biologists, commercial divers, environmental engineers, and environmental scientists that provides biomonitoring, environmental…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 170 contacts → | ||||
Exact match “In-Situ simplifies water monitoring for surface water, coastal, groundwater, aquaculture, drinking water and wastewater applications with reliable, low-maintenance instrumentation…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 129 contacts → | ||||
Exact match “Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 106 contacts → | ||||
Exact match “GWTT is one of the only U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 96 contacts → | ||||
Exact match “EEC Environmental is a national environmental consulting firm that specializes in water, wastewater, stormwater, regulatory compliance, safety, and assessment and remediation of…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 83 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 79 contacts → | ||||
Exact match “Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 71 contacts → | ||||
Exact match “QED Environmental Systems is the world's leading provider of environmental technology solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 70 contacts → | ||||
Exact match “We deliver quality solutions with integrity and expertise, every time.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 66 contacts → | ||||
Exact match “GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 63 contacts → | ||||
Exact match “Blaine Tech Services performs environmental sampling and related field services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 57 contacts → | ||||
Exact match “Headwater Companies, LLC is a collection of leading groundwater distributors.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 47 contacts → | ||||
Exact match “KETOS is a vertically integrated water intelligence platform with intelligent hardware, bi-directional connectivity infrastructure, interactive software, and hassle-free services…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 45 contacts → | ||||
Exact match “S.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 44 contacts → | ||||
Exact match “Since 1973, Peerless-Midwest, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 43 contacts → | ||||
Exact match “The National Ground Water Association is the hallmark organization for anyone affiliated with the groundwater industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 42 contacts → | ||||
Exact match “Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 40 contacts → | ||||
Exact match “At COLUMBIA Technologies, we're shaping the future of environmental safety and responsibility.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 39 contacts → | ||||
Exact match “Gregg Drilling, LLC.(Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 37 contacts → | ||||
Exact match “Hargis + Associates, Inc.(H+A) is an employee-owned, environmental consulting and engineering firm founded in 1979 with a commitment to providing high-quality, cost-effective…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 36 contacts → | ||||
Exact match “RMB Environmental Laboratories (RMB) is an independent, leading provider of comprehensive environmental testing solutions, founded in 1995.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 35 contacts → | ||||
Exact match “Fibertec Environmental Services is a full service environmental analytical laboratory, specializing in environmental analysis, subsurface investigations, and natural gas analysis.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 26 contacts → | ||||
Exact match “Company Overview: Carroll Water Systems has been locally owned and operated since 1983.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “groundwater monitoring companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 327 groundwater monitoring companies based in the United States
See the full list, filter by size, metro and specialty, and access 3,145 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Groundwater monitoring companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 327 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “groundwater monitoring companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 3,145 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “groundwater monitoring companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many groundwater monitoring companies are there based in the United States?
RevenueBase identified 327 company matches for groundwater monitoring companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
HACH tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most groundwater monitoring companies?
Houston leads with 6 company records, followed by Miami (5) and Fort Collins (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,145 professional contacts with verified work emails tracked across these 327 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 327 groundwater monitoring companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Groundwater monitoring companies by geography
- Groundwater monitoring companies based in Australia
- Groundwater monitoring companies based in Brazil
- Groundwater monitoring companies based in Canada
- Groundwater monitoring companies based in Chile
- Groundwater monitoring companies based in Germany
- Groundwater monitoring companies based in India
- Groundwater monitoring companies based in Italy
- Groundwater monitoring companies based in the Netherlands
- Groundwater monitoring companies based in South Africa
- Groundwater monitoring companies based in the United Kingdom
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Groundwater monitoring companies based in Australia
- Groundwater monitoring companies based in Brazil
- Groundwater monitoring companies based in Canada
- Groundwater monitoring companies based in Chile
- Groundwater monitoring companies based in Germany
- Groundwater monitoring companies based in India
Company intelligence · public preview
Top 25 groundwater monitoring companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 327 matching company records for groundwater monitoring companies based in the United States, with 6,505 tracked contacts and 3,145 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 groundwater monitoring companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  HACHhach.comHQ: Loveland, CO, United StatesReported employees: 1,001-5,000 | Loveland, CO, United States | 1,001-5,000 | Exact match | 3,095 contacts → |
“At Hach, we ensure water quality for people around the world, and every associate plays a vital role in that mission.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Phigenicsphigenics.com HQ: Warrenville, IL, United StatesReported employees: 51-200 | Warrenville, IL, United States | 51-200 | Exact match | 197 contacts → |
“Phigenics is a leading provider of safe, smart, and superior water management programs aligned with ANSI/ASHRAE Standard 188 and Centers for Medicare & Medicaid Services (CMS) QSO…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Enviroscience, INCenviroscienceinc.comHQ: Stow, OH, United StatesReported employees: 51-200 | Stow, OH, United States | 51-200 | Exact match | 176 contacts → |
“EnviroScience is a team of over 150 expert biologists, commercial divers, environmental engineers, and environmental scientists that provides biomonitoring, environmental…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  In-Situ Environmentalin-situ.comHQ: Fort Collins, CO, United StatesReported employees: 201-500 | Fort Collins, CO, United States | 201-500 | Exact match | 170 contacts → |
“In-Situ simplifies water monitoring for surface water, coastal, groundwater, aquaculture, drinking water and wastewater applications with reliable, low-maintenance instrumentation…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Ensero Solutionsensero.comHQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 129 contacts → |
“Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ground Water Treatment & Technology, LLCgwttllc.com HQ: Wharton, NJ, United StatesReported employees: 51-200 | Wharton, NJ, United States | 51-200 | Exact match | 106 contacts → |
“GWTT is one of the only U.S.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | EEC Environmentaleecenvironmental.com HQ: Orange, CA, United StatesReported employees: 11-50 | Orange, CA, United States | 11-50 | Exact match | 96 contacts → |
“EEC Environmental is a national environmental consulting firm that specializes in water, wastewater, stormwater, regulatory compliance, safety, and assessment and remediation of…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Geotech Environmental Equipment, INCgeotechenv.comHQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 83 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 |  Larry Walker Associateslwa.comHQ: Davis, CA, United StatesReported employees: 51-200 | Davis, CA, United States | 51-200 | Exact match | 79 contacts → |
“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  QED Environmental Systems Americasqedenv.comHQ: Dexter, MI, United StatesReported employees: 51-200 | Dexter, MI, United States | 51-200 | Exact match | 71 contacts → |
“QED Environmental Systems is the world's leading provider of environmental technology solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Cgrs INCcgrs.comHQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  GSI Water Solutions, INCgsiws.comHQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 66 contacts → |
“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Blaine Tech Servicesblainetech.comHQ: San Jose, CA, United StatesReported employees: 51-200 | San Jose, CA, United States | 51-200 | Exact match | 63 contacts → |
“Blaine Tech Services performs environmental sampling and related field services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Headwater Companiesheadwaterco.com HQ: Littleton, CO, United StatesReported employees: 201-500 | Littleton, CO, United States | 201-500 | Exact match | 57 contacts → |
“Headwater Companies, LLC is a collection of leading groundwater distributors.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | KETOSketos.co HQ: Sunnyvale, CA, United StatesReported employees: 11-50 | Sunnyvale, CA, United States | 11-50 | Exact match | 47 contacts → |
“KETOS is a vertically integrated water intelligence platform with intelligent hardware, bi-directional connectivity infrastructure, interactive software, and hassle-free services…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: Rockville, MD, United StatesReported employees: 51-200 | Rockville, MD, United States | 51-200 | Exact match | 45 contacts → |
“S.S.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Peerless Midwest, INCpeerlessmidwest.com HQ: Mishawaka, IN, United StatesReported employees: 51-200 | Mishawaka, IN, United States | 51-200 | Exact match | 44 contacts → |
“Since 1973, Peerless-Midwest, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | National Ground Water Associationgroundwaterweek.com HQ: Westerville, OH, United StatesReported employees: 11-50 | Westerville, OH, United States | 11-50 | Exact match | 43 contacts → |
“The National Ground Water Association is the hallmark organization for anyone affiliated with the groundwater industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Clear Creek Associatesclearcreekassociates.com HQ: Scottsdale, AZ, United StatesReported employees: 11-50 | Scottsdale, AZ, United States | 11-50 | Exact match | 42 contacts → |
“Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Columbia Technologiescolumbiatechnologies.comHQ: Rockville, MD, United StatesReported employees: 11-50 | Rockville, MD, United States | 11-50 | Exact match | 40 contacts → |
“At COLUMBIA Technologies, we're shaping the future of environmental safety and responsibility.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Gregg Drilling, LLCgreggdrilling.comHQ: Signal Hill, CA, United StatesReported employees: 51-200 | Signal Hill, CA, United States | 51-200 | Exact match | 39 contacts → |
“Gregg Drilling, LLC.(Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Hargis Associates, INChargis.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 37 contacts → |
“Hargis + Associates, Inc.(H+A) is an employee-owned, environmental consulting and engineering firm founded in 1979 with a commitment to providing high-quality, cost-effective…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  RMB Environmental Laboratories INCrmbel.comHQ: Detroit Lakes, MN, United StatesReported employees: 51-200 | Detroit Lakes, MN, United States | 51-200 | Exact match | 36 contacts → |
“RMB Environmental Laboratories (RMB) is an independent, leading provider of comprehensive environmental testing solutions, founded in 1995.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Fibertec Environmental Servicesfibertec.usHQ: Holt, MI, United StatesReported employees: 51-200 | Holt, MI, United States | 51-200 | Exact match | 35 contacts → |
“Fibertec Environmental Services is a full service environmental analytical laboratory, specializing in environmental analysis, subsurface investigations, and natural gas analysis.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Carroll Water Systems, INCcarrollwater.com HQ: Cockeysville, MD, United StatesReported employees: 11-50 | Cockeysville, MD, United States | 11-50 | Exact match | 26 contacts → |
“Company Overview: Carroll Water Systems has been locally owned and operated since 1983.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 327 company matches
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Groundwater monitoring companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
326 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 327 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for groundwater monitoring companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many groundwater monitoring companies did RevenueBase find based in the United States?
The saved snapshot records 327 matching company records, 6,505 tracked contacts and 3,145 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Groundwater monitoring companies by geography
- Groundwater monitoring companies based in Australia
- Groundwater monitoring companies based in Brazil
- Groundwater monitoring companies based in Canada
- Groundwater monitoring companies based in Chile
- Groundwater monitoring companies based in Germany
- Groundwater monitoring companies based in India
- Groundwater monitoring companies based in Italy
- Groundwater monitoring companies based in the Netherlands
- Groundwater monitoring companies based in South Africa
- Groundwater monitoring companies based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 groundwater monitoring companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/groundwater-monitoring-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Groundwater monitoring companies based in Australia
- Groundwater monitoring companies based in Brazil
- Groundwater monitoring companies based in Canada
- Groundwater monitoring companies based in Chile
- Groundwater monitoring companies based in Germany
- Groundwater monitoring companies based in India
Company intelligence · public preview
Top 25 groundwater monitoring companies based in the United States
RevenueBase records 327 matching company records for groundwater monitoring companies based in the United States, with 6,505 tracked contacts and 3,145 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 groundwater monitoring companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HACHhach.com HQ: Loveland, CO, United StatesReported employees: 1,001-5,000 | Loveland, CO, United States | 1,001-5,000 | Exact match | 3,095 contacts → |
“At Hach, we ensure water quality for people around the world, and every associate plays a vital role in that mission.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Phigenicsphigenics.com HQ: Warrenville, IL, United StatesReported employees: 51-200 | Warrenville, IL, United States | 51-200 | Exact match | 197 contacts → |
“Phigenics is a leading provider of safe, smart, and superior water management programs aligned with ANSI/ASHRAE Standard 188 and Centers for Medicare & Medicaid Services (CMS) QSO…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Enviroscience, INCenviroscienceinc.com HQ: Stow, OH, United StatesReported employees: 51-200 | Stow, OH, United States | 51-200 | Exact match | 176 contacts → |
“EnviroScience is a team of over 150 expert biologists, commercial divers, environmental engineers, and environmental scientists that provides biomonitoring, environmental…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | In-Situ Environmentalin-situ.com HQ: Fort Collins, CO, United StatesReported employees: 201-500 | Fort Collins, CO, United States | 201-500 | Exact match | 170 contacts → |
“In-Situ simplifies water monitoring for surface water, coastal, groundwater, aquaculture, drinking water and wastewater applications with reliable, low-maintenance instrumentation…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ensero Solutionsensero.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 129 contacts → |
“Ensero Solutions is an environmental consulting and remediation business with specific expertise in environmental assessments and permitting solutions, mine water management…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ground Water Treatment & Technology, LLCgwttllc.com HQ: Wharton, NJ, United StatesReported employees: 51-200 | Wharton, NJ, United States | 51-200 | Exact match | 106 contacts → |
“GWTT is one of the only U.S.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | EEC Environmentaleecenvironmental.com HQ: Orange, CA, United StatesReported employees: 11-50 | Orange, CA, United States | 11-50 | Exact match | 96 contacts → |
“EEC Environmental is a national environmental consulting firm that specializes in water, wastewater, stormwater, regulatory compliance, safety, and assessment and remediation of…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Geotech Environmental Equipment, INCgeotechenv.com HQ: Denver, CO, United StatesReported employees: 51-200 | Denver, CO, United States | 51-200 | Exact match | 83 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 9 | Larry Walker Associateslwa.com HQ: Davis, CA, United StatesReported employees: 51-200 | Davis, CA, United States | 51-200 | Exact match | 79 contacts → |
“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | QED Environmental Systems Americasqedenv.com HQ: Dexter, MI, United StatesReported employees: 51-200 | Dexter, MI, United States | 51-200 | Exact match | 71 contacts → |
“QED Environmental Systems is the world's leading provider of environmental technology solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cgrs INCcgrs.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | GSI Water Solutions, INCgsiws.com HQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 66 contacts → |
“GSI Water Solutions, Inc, is a specialized groundwater, environmental, and water resources consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Blaine Tech Servicesblainetech.com HQ: San Jose, CA, United StatesReported employees: 51-200 | San Jose, CA, United States | 51-200 | Exact match | 63 contacts → |
“Blaine Tech Services performs environmental sampling and related field services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Headwater Companiesheadwaterco.com HQ: Littleton, CO, United StatesReported employees: 201-500 | Littleton, CO, United States | 201-500 | Exact match | 57 contacts → |
“Headwater Companies, LLC is a collection of leading groundwater distributors.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | KETOSketos.co HQ: Sunnyvale, CA, United StatesReported employees: 11-50 | Sunnyvale, CA, United States | 11-50 | Exact match | 47 contacts → |
“KETOS is a vertically integrated water intelligence platform with intelligent hardware, bi-directional connectivity infrastructure, interactive software, and hassle-free services…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: Rockville, MD, United StatesReported employees: 51-200 | Rockville, MD, United States | 51-200 | Exact match | 45 contacts → |
“S.S.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Peerless Midwest, INCpeerlessmidwest.com HQ: Mishawaka, IN, United StatesReported employees: 51-200 | Mishawaka, IN, United States | 51-200 | Exact match | 44 contacts → |
“Since 1973, Peerless-Midwest, Inc.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | National Ground Water Associationgroundwaterweek.com HQ: Westerville, OH, United StatesReported employees: 11-50 | Westerville, OH, United States | 11-50 | Exact match | 43 contacts → |
“The National Ground Water Association is the hallmark organization for anyone affiliated with the groundwater industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Clear Creek Associatesclearcreekassociates.com HQ: Scottsdale, AZ, United StatesReported employees: 11-50 | Scottsdale, AZ, United States | 11-50 | Exact match | 42 contacts → |
“Clear Creek Associates, a hydrogeological consulting company, was started in September to provide a very high level of expertise in groundwater science.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Columbia Technologiescolumbiatechnologies.com HQ: Rockville, MD, United StatesReported employees: 11-50 | Rockville, MD, United States | 11-50 | Exact match | 40 contacts → |
“At COLUMBIA Technologies, we're shaping the future of environmental safety and responsibility.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Gregg Drilling, LLCgreggdrilling.com HQ: Signal Hill, CA, United StatesReported employees: 51-200 | Signal Hill, CA, United States | 51-200 | Exact match | 39 contacts → |
“Gregg Drilling, LLC.(Gregg) offers a wide range of services for environmental, geotechnical and marine site investigation and remediation.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Hargis Associates, INChargis.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 37 contacts → |
“Hargis + Associates, Inc.(H+A) is an employee-owned, environmental consulting and engineering firm founded in 1979 with a commitment to providing high-quality, cost-effective…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | RMB Environmental Laboratories INCrmbel.com HQ: Detroit Lakes, MN, United StatesReported employees: 51-200 | Detroit Lakes, MN, United States | 51-200 | Exact match | 36 contacts → |
“RMB Environmental Laboratories (RMB) is an independent, leading provider of comprehensive environmental testing solutions, founded in 1995.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Fibertec Environmental Servicesfibertec.us HQ: Holt, MI, United StatesReported employees: 51-200 | Holt, MI, United States | 51-200 | Exact match | 35 contacts → |
“Fibertec Environmental Services is a full service environmental analytical laboratory, specializing in environmental analysis, subsurface investigations, and natural gas analysis.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Carroll Water Systems, INCcarrollwater.com HQ: Cockeysville, MD, United StatesReported employees: 11-50 | Cockeysville, MD, United States | 11-50 | Exact match | 26 contacts → |
“Company Overview: Carroll Water Systems has been locally owned and operated since 1983.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 327 company matches
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Groundwater monitoring companies: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
326 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 327 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for groundwater monitoring companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many groundwater monitoring companies did RevenueBase find based in the United States?
The saved snapshot records 327 matching company records, 6,505 tracked contacts and 3,145 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 groundwater monitoring companies based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/groundwater-monitoring-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Groundwater monitoring companies based in Australia
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