Company lists · Data refreshed September 2026
Top 25 Wastewater system design engineers based in the United States
RevenueBase identified 186 company matches for wastewater system design engineers associated with the United States as of September 2026 and tracks 3,939 professional contacts across them, including 2,162 with verified work emails. Houston is the largest hub.
This list covers company matches for wastewater system design engineers 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 22, 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 wastewater system design engineers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,718 contacts → | ||||
Exact match “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 2 | 315 contacts → | ||||
Exact match “Tata & Howard is a 100% employee owned, award-winning, specialized consulting engineering firm dedicated to providing superior client service coupled with delivering…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 3 | 136 contacts → | ||||
Exact match “RH2 is an innovative, full-service engineering firm specializing in water and wastewater related projects.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 4 | 135 contacts → | ||||
Exact match “Water Works Engineers is a leading civil and environmental engineering firm specializing in innovative and sustainable solutions for water infrastructure projects across the…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 5 | 112 contacts → | ||||
Exact match “Over the past 45 years, GSE Construction has completed more than projects as a general engineering contractor.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 6 | 101 contacts → | ||||
Exact match “Today, Jones & Henry Engineers, Ltd, continues to provide high quality consulting services in water, wastewater, storm water, and civil engineering to municipalities and…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 7 | 79 contacts → | ||||
Exact match “The objective of A&S is to provide municipal engineering services, with focus on water districts, municipalities, and land development.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 8 | 78 contacts → | ||||
Exact match “Water: It’s a human thing.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 9 | 54 contacts → | ||||
Exact match “AQUA Engineering (AQUA) is a civil engineering firm specializing in municipal engineering, water resources, water and wastewater treatment design, and environmental services.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 10 | 47 contacts → | ||||
Exact match “NCS is an experienced water and wastewater engineering consulting firm with offices in Arizona, Maryland, Nevada, New Mexico and California.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 11 | 31 contacts → | ||||
Exact match “ClearStream Environmental engineers high-performance water and wastewater treatment solutions for municipal and industrial applications.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 12 | 30 contacts → | ||||
Exact match “Practical Applications Inc.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 13 | 30 contacts → | ||||
Exact match “Design Build Solutions for Wastewater Collection Systems and Treatment Facilities.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 14 | 28 contacts → | ||||
Exact match “Since 1992, Sawcross, Inc.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 15 | 28 contacts → | ||||
Exact match “Environ-Civil Engineering, Ltd.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 16 | 26 contacts → | ||||
Exact match “A leading provider of professional engineering services to public water and wastewater systems for over 90 years.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 17 | 25 contacts → | ||||
Exact match “Baird Gilroy & Dixon, LLC is a full service electrical engineering firm specializing in Water and Wastewater projects from concept through construction.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 18 | 24 contacts → | ||||
Exact match “Engineering consulting firm specializing in planning, design, and construction administration of water and wastewater infrastructure.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 19 | 19 contacts → | ||||
Exact match “Civil Engineering Consultants, Inc.(CEC) is a Civil and Environmental Engineering firm serving the Atlanta, Georgia metropolitan area.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 20 | 18 contacts → | ||||
Exact match “At Streamkey Inc, we specialize in custom engineered water and wastewater systems for a variety of commercial and residential applications.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 21 | 18 contacts → | ||||
Exact match “Jones-Heroy & Associates is a civil engineering firm specializing in the water and wastewater industry with offices located in Austin, Dallas and Lampasas.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 22 | 18 contacts → | ||||
Exact match “Water and Wastewater Solutions for Lasting Community Impact At Modern Engineering Solutions, we provide end-to-end services for water treatment, collection, and distribution…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 23 | 17 contacts → | ||||
Exact match “Champlin Associates specializes in Municipal Water and Wastewater Pumps, Controls, Operations, Filtration, and Treatment.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 24 | 17 contacts → | ||||
Exact match “Senior Civil and Environmental Engineer at Weber, Hayes and Associates.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 25 | 17 contacts → | ||||
Exact match “We’re redefining what it means to partner with a consulting engineering firm.” Recorded in the RevenueBase company graph · Sep 22, 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 “wastewater system design engineers”. 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 186 wastewater system design engineers based in the United States
See the full list, filter by size, metro and specialty, and access 2,162 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Wastewater system design engineers based in the United States at a glance
As of Sep 22, 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 186 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 “wastewater system design engineers” 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 2,162 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 22, 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 “wastewater system design engineers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many wastewater system design engineers are there based in the United States?
RevenueBase identified 186 company matches for wastewater system design engineers 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?
Carollo Engineers tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most wastewater system design engineers?
Houston leads with 6 company records, followed by Austin (5) and Phoenix (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 2,162 professional contacts with verified work emails tracked across these 186 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 186 wastewater system design engineers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Wastewater system design engineers by geography
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
- Wastewater system design engineers based in Germany
- Wastewater system design engineers based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
Company intelligence · public preview
Top 25 wastewater system design engineers 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 186 matching company records for wastewater system design engineers based in the United States, with 3,939 tracked contacts and 2,162 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 22, 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 wastewater system design engineers 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 |  Carollo Engineerscarollo.comHQ: Walnut Creek, CA, United StatesReported employees: 1,001-5,000 | Walnut Creek, CA, United States | 1,001-5,000 | Exact match | 1,718 contacts → |
“For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Tata & Howard, INCtataandhoward.comHQ: Marlborough, MA, United StatesReported employees: 51-200 | Marlborough, MA, United States | 51-200 | Exact match | 315 contacts → |
“Tata & Howard is a 100% employee owned, award-winning, specialized consulting engineering firm dedicated to providing superior client service coupled with delivering…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Rh2 Engineeringrh2.com HQ: Bothell, WA, United StatesReported employees: 51-200 | Bothell, WA, United States | 51-200 | Exact match | 136 contacts → |
“RH2 is an innovative, full-service engineering firm specializing in water and wastewater related projects.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Water Works Engineerswaterworksengineers.comHQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 135 contacts → |
“Water Works Engineers is a leading civil and environmental engineering firm specializing in innovative and sustainable solutions for water infrastructure projects across the…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | GSE Construction Company, INCgseconstruction.com HQ: Livermore, CA, United StatesReported employees: 201-500 | Livermore, CA, United States | 201-500 | Exact match | 112 contacts → |
“Over the past 45 years, GSE Construction has completed more than projects as a general engineering contractor.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Jones & Henry Engineersjheng.com HQ: Toledo, OH, United StatesReported employees: 51-200 | Toledo, OH, United States | 51-200 | Exact match | 101 contacts → |
“Today, Jones & Henry Engineers, Ltd, continues to provide high quality consulting services in water, wastewater, storm water, and civil engineering to municipalities and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  A&s Engineers, INCas-engineers.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 79 contacts → |
“The objective of A&S is to provide municipal engineering services, with focus on water districts, municipalities, and land development.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | LEE ROlee-ro.com HQ: City Of Industry, CA, United StatesReported employees: 51-200 | City Of Industry, CA, United States | 51-200 | Exact match | 78 contacts → |
“Water: It’s a human thing.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Aqua Engineeringaquaeng.com HQ: Bountiful, UT, United StatesReported employees: 51-200 | Bountiful, UT, United States | 51-200 | Exact match | 54 contacts → |
“AQUA Engineering (AQUA) is a civil engineering firm specializing in municipal engineering, water resources, water and wastewater treatment design, and environmental services.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  NCS Engineersncseng.comHQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 47 contacts → |
“NCS is an experienced water and wastewater engineering consulting firm with offices in Arizona, Maryland, Nevada, New Mexico and California.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Clearstream Environmental, INCclearstreameng.com HQ: Sandy, UT, United StatesReported employees: 11-50 | Sandy, UT, United States | 11-50 | Exact match | 31 contacts → |
“ClearStream Environmental engineers high-performance water and wastewater treatment solutions for municipal and industrial applications.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Practical Applications, INCpaih2o.com HQ: Woburn, MA, United StatesReported employees: 11-50 | Woburn, MA, United States | 11-50 | Exact match | 30 contacts → |
“Practical Applications Inc.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Gulf Coast Undergroundgulfcoastunderground.com HQ: Theodore, AL, United StatesReported employees: 51-200 | Theodore, AL, United States | 51-200 | Exact match | 30 contacts → |
“Design Build Solutions for Wastewater Collection Systems and Treatment Facilities.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sawcross, INCsawcross.comHQ: Jacksonville, FL, United StatesReported employees: 51-200 | Jacksonville, FL, United States | 51-200 | Exact match | 28 contacts → |
“Since 1992, Sawcross, Inc.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Environ-Civil Engineering LTDece-ltd.comHQ: Columbia, MD, United StatesReported employees: 11-50 | Columbia, MD, United States | 11-50 | Exact match | 28 contacts → |
“Environ-Civil Engineering, Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Krebs Engineering, INCkrebseng.com HQ: Birmingham, AL, United StatesReported employees: 11-50 | Birmingham, AL, United States | 11-50 | Exact match | 26 contacts → |
“A leading provider of professional engineering services to public water and wastewater systems for over 90 years.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Baird Gilroy & Dixon, LLCbgdeng.comHQ: Richmond, TX, United StatesReported employees: 11-50 | Richmond, TX, United States | 11-50 | Exact match | 25 contacts → |
“Baird Gilroy & Dixon, LLC is a full service electrical engineering firm specializing in Water and Wastewater projects from concept through construction.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Inflo Design Group, LLCinflodesign.comHQ: Nashville, United StatesReported employees: 11-50 | Nashville, United States | 11-50 | Exact match | 24 contacts → |
“Engineering consulting firm specializing in planning, design, and construction administration of water and wastewater infrastructure.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Civil Engineering Consultants, Inc. - Georgiacecincga.comHQ: Marietta, United StatesReported employees: 1-10 | Marietta, United States | 1-10 | Exact match | 19 contacts → |
“Civil Engineering Consultants, Inc.(CEC) is a Civil and Environmental Engineering firm serving the Atlanta, Georgia metropolitan area.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Streamkey INCstreamkey.com HQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 18 contacts → |
“At Streamkey Inc, we specialize in custom engineered water and wastewater systems for a variety of commercial and residential applications.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Jones-Heroy & Associates, INCjones-heroy.comHQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 18 contacts → |
“Jones-Heroy & Associates is a civil engineering firm specializing in the water and wastewater industry with offices located in Austin, Dallas and Lampasas.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MESmod-eng.com HQ: Mckinney, TX, United StatesReported employees: 11-50 | Mckinney, TX, United States | 11-50 | Exact match | 18 contacts → |
“Water and Wastewater Solutions for Lasting Community Impact At Modern Engineering Solutions, we provide end-to-end services for water treatment, collection, and distribution…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Champlin Associateschamplinassociates.com HQ: Essex Junction, VT, United StatesReported employees: 11-50 | Essex Junction, VT, United States | 11-50 | Exact match | 17 contacts → |
“Champlin Associates specializes in Municipal Water and Wastewater Pumps, Controls, Operations, Filtration, and Treatment.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Weber, Hayes And Associatesweber-hayes.com HQ: Watsonville, CA, United StatesReported employees: 1-10 | Watsonville, CA, United States | 1-10 | Exact match | 17 contacts → |
“Senior Civil and Environmental Engineer at Weber, Hayes and Associates.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  N2w Engineering, INCn2weng.comHQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 17 contacts → |
“We’re redefining what it means to partner with a consulting engineering firm.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 186 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Wastewater system design engineers: dataset insights
September 22, 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
186 records in the displayed employee bands.
0 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 186 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 22, 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 wastewater system design engineers?
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 wastewater system design engineers did RevenueBase find based in the United States?
The saved snapshot records 186 matching company records, 3,939 tracked contacts and 2,162 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 22, 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
Wastewater system design engineers by geography
Cite this list
RevenueBase Data Team. Top 25 wastewater system design engineers based in the United States. Snapshot: September 22, 2026. https://revenuebase.ai/companies/wastewater-system-design-engineers/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
- Wastewater system design engineers based in Germany
- Wastewater system design engineers based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
Company intelligence · public preview
Top 25 wastewater system design engineers based in the United States
RevenueBase records 186 matching company records for wastewater system design engineers based in the United States, with 3,939 tracked contacts and 2,162 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 22, 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 wastewater system design engineers 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 | Carollo Engineerscarollo.com HQ: Walnut Creek, CA, United StatesReported employees: 1,001-5,000 | Walnut Creek, CA, United States | 1,001-5,000 | Exact match | 1,718 contacts → |
“For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Tata & Howard, INCtataandhoward.com HQ: Marlborough, MA, United StatesReported employees: 51-200 | Marlborough, MA, United States | 51-200 | Exact match | 315 contacts → |
“Tata & Howard is a 100% employee owned, award-winning, specialized consulting engineering firm dedicated to providing superior client service coupled with delivering…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Rh2 Engineeringrh2.com HQ: Bothell, WA, United StatesReported employees: 51-200 | Bothell, WA, United States | 51-200 | Exact match | 136 contacts → |
“RH2 is an innovative, full-service engineering firm specializing in water and wastewater related projects.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Water Works Engineerswaterworksengineers.com HQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 135 contacts → |
“Water Works Engineers is a leading civil and environmental engineering firm specializing in innovative and sustainable solutions for water infrastructure projects across the…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | GSE Construction Company, INCgseconstruction.com HQ: Livermore, CA, United StatesReported employees: 201-500 | Livermore, CA, United States | 201-500 | Exact match | 112 contacts → |
“Over the past 45 years, GSE Construction has completed more than projects as a general engineering contractor.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Jones & Henry Engineersjheng.com HQ: Toledo, OH, United StatesReported employees: 51-200 | Toledo, OH, United States | 51-200 | Exact match | 101 contacts → |
“Today, Jones & Henry Engineers, Ltd, continues to provide high quality consulting services in water, wastewater, storm water, and civil engineering to municipalities and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | A&s Engineers, INCas-engineers.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 79 contacts → |
“The objective of A&S is to provide municipal engineering services, with focus on water districts, municipalities, and land development.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | LEE ROlee-ro.com HQ: City Of Industry, CA, United StatesReported employees: 51-200 | City Of Industry, CA, United States | 51-200 | Exact match | 78 contacts → |
“Water: It’s a human thing.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Aqua Engineeringaquaeng.com HQ: Bountiful, UT, United StatesReported employees: 51-200 | Bountiful, UT, United States | 51-200 | Exact match | 54 contacts → |
“AQUA Engineering (AQUA) is a civil engineering firm specializing in municipal engineering, water resources, water and wastewater treatment design, and environmental services.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | NCS Engineersncseng.com HQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 47 contacts → |
“NCS is an experienced water and wastewater engineering consulting firm with offices in Arizona, Maryland, Nevada, New Mexico and California.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Clearstream Environmental, INCclearstreameng.com HQ: Sandy, UT, United StatesReported employees: 11-50 | Sandy, UT, United States | 11-50 | Exact match | 31 contacts → |
“ClearStream Environmental engineers high-performance water and wastewater treatment solutions for municipal and industrial applications.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Practical Applications, INCpaih2o.com HQ: Woburn, MA, United StatesReported employees: 11-50 | Woburn, MA, United States | 11-50 | Exact match | 30 contacts → |
“Practical Applications Inc.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Gulf Coast Undergroundgulfcoastunderground.com HQ: Theodore, AL, United StatesReported employees: 51-200 | Theodore, AL, United States | 51-200 | Exact match | 30 contacts → |
“Design Build Solutions for Wastewater Collection Systems and Treatment Facilities.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sawcross, INCsawcross.com HQ: Jacksonville, FL, United StatesReported employees: 51-200 | Jacksonville, FL, United States | 51-200 | Exact match | 28 contacts → |
“Since 1992, Sawcross, Inc.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Environ-Civil Engineering LTDece-ltd.com HQ: Columbia, MD, United StatesReported employees: 11-50 | Columbia, MD, United States | 11-50 | Exact match | 28 contacts → |
“Environ-Civil Engineering, Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Krebs Engineering, INCkrebseng.com HQ: Birmingham, AL, United StatesReported employees: 11-50 | Birmingham, AL, United States | 11-50 | Exact match | 26 contacts → |
“A leading provider of professional engineering services to public water and wastewater systems for over 90 years.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Baird Gilroy & Dixon, LLCbgdeng.com HQ: Richmond, TX, United StatesReported employees: 11-50 | Richmond, TX, United States | 11-50 | Exact match | 25 contacts → |
“Baird Gilroy & Dixon, LLC is a full service electrical engineering firm specializing in Water and Wastewater projects from concept through construction.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Inflo Design Group, LLCinflodesign.com HQ: Nashville, United StatesReported employees: 11-50 | Nashville, United States | 11-50 | Exact match | 24 contacts → |
“Engineering consulting firm specializing in planning, design, and construction administration of water and wastewater infrastructure.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Civil Engineering Consultants, Inc. - Georgiacecincga.com HQ: Marietta, United StatesReported employees: 1-10 | Marietta, United States | 1-10 | Exact match | 19 contacts → |
“Civil Engineering Consultants, Inc.(CEC) is a Civil and Environmental Engineering firm serving the Atlanta, Georgia metropolitan area.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Streamkey INCstreamkey.com HQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 18 contacts → |
“At Streamkey Inc, we specialize in custom engineered water and wastewater systems for a variety of commercial and residential applications.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Jones-Heroy & Associates, INCjones-heroy.com HQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 18 contacts → |
“Jones-Heroy & Associates is a civil engineering firm specializing in the water and wastewater industry with offices located in Austin, Dallas and Lampasas.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MESmod-eng.com HQ: Mckinney, TX, United StatesReported employees: 11-50 | Mckinney, TX, United States | 11-50 | Exact match | 18 contacts → |
“Water and Wastewater Solutions for Lasting Community Impact At Modern Engineering Solutions, we provide end-to-end services for water treatment, collection, and distribution…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Champlin Associateschamplinassociates.com HQ: Essex Junction, VT, United StatesReported employees: 11-50 | Essex Junction, VT, United States | 11-50 | Exact match | 17 contacts → |
“Champlin Associates specializes in Municipal Water and Wastewater Pumps, Controls, Operations, Filtration, and Treatment.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Weber, Hayes And Associatesweber-hayes.com HQ: Watsonville, CA, United StatesReported employees: 1-10 | Watsonville, CA, United States | 1-10 | Exact match | 17 contacts → |
“Senior Civil and Environmental Engineer at Weber, Hayes and Associates.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | N2w Engineering, INCn2weng.com HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 17 contacts → |
“We’re redefining what it means to partner with a consulting engineering firm.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 186 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Wastewater system design engineers: dataset insights
September 22, 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
186 records in the displayed employee bands.
0 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 186 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 22, 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 wastewater system design engineers?
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 wastewater system design engineers did RevenueBase find based in the United States?
The saved snapshot records 186 matching company records, 3,939 tracked contacts and 2,162 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 22, 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
Wastewater system design engineers by geography
Cite this list
RevenueBase Data Team. Top 25 wastewater system design engineers based in the United States. Snapshot: September 22, 2026. https://revenuebase.ai/companies/wastewater-system-design-engineers/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
- Wastewater system design engineers based in Germany
- Wastewater system design engineers based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States