Company lists · Data refreshed November 2026

Top 25 Groundwater pump testing services based in the United States

RevenueBase identified 204 company matches for groundwater pump testing services associated with the United States as of November 2026 and tracks 996 professional contacts across them, including 275 with verified work emails. Auburn Hills is the largest hub.

This list covers company matches for groundwater pump testing services 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 November 6, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
204Companies
996Contacts tracked
275Verified emails
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The 25 largest groundwater pump testing services based in the United States

Ranked by team size
Top 25 of 204 company matches for groundwater pump testing services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAuburn Hills, MI, United StatesHQ recorded Nov 6, 2026501-1,000229 contacts →

Exact match

“For 36 years, Mersino has been trusted with the most complex water management challenges in the country.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWillis, TX, United StatesHQ recorded Nov 6, 2026201-50064 contacts →

Exact match

“Authentic relationships are standard practice at Weisinger Incorporated.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWest Sacramento, CA, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Viking Drillers, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCamp Verde, AZ, United StatesHQ recorded Nov 6, 202651-20016 contacts →

Exact match

“We are a water well drilling and pump company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchRock Tavern, VA, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Subsurface Technologies, Inc provides standard and specialized groundwater services to the municipal, industrial, residential and investor owned water utility markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMadera, CA, United StatesHQ recorded Nov 6, 202611-5014 contacts →

Exact match

“Founded in 1977, Madera Pumps is a full-service pump and well services provider that serves farming operations, municipalities, domestic homes and Irrigation Districts in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchVan Nuys, CA, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“RICHARD C.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMiamisburg, OH, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“We provide services to the municipal and industrial markets for drilling and service of water wells, as well as new pump sales and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHialeah, FL, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Jaffer Well Drilling provide water well drilling services in South Florida.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBedford Hills, NY, United StatesHQ recorded Nov 6, 202611-5011 contacts →

Exact match

“Westfair Water Systems is the leader in water treatment and well pump services in Westchester and Fairfield Counties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSanford, FL, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Andreyev Engineering, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchForest Park, GA, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“CCE has extensive experience with waterline installation and bypass pump monitoring.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWillmar, MN, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Our staff is committed to quality, service, and reliability in water well drilling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Verdad Group, LLC offers the following services: • Permit compliance and environmental data collection • Environmental sampling • Wellfield maintenance and pump installation •…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSalisbury, NC, United StatesHQ recorded Nov 6, 20261-109 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchExton, PA, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAuburn, CA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Diamond Well Drilling has been serving northern California for over 35 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchTerra Bella, CA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCook, MN, United StatesHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Froe Bros Drilling formerly Kolstad Olson Drilling is built on the premise of hard work, quality service, and a commitment to providing optimum water well drilling, hydro…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNorth Turner, ME, United StatesHQ recorded Nov 6, 202611-505 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchRensselaer, NY, United StatesHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Finding the right water testing service can be daunting but here at CREL, we test municipal, potable, and non-potable well water systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchProtem, MO, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

“The Ozark Underground Laboratory, Inc.(OUL), is a private consulting and contract studies firm specializing in groundwater tracing and other hydrogeological services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Jacinto, United StatesHQ recorded Nov 6, 202611-504 contacts →

Exact match

“LO Lynch has been servicing the Hemet and surrounding areas for more than 60 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSumner, IL, United StatesHQ recorded Nov 6, 202651-2004 contacts →

Exact match

“Cahoy Pump Service is your premier provider of municipal, industrial, and irrigation water well services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchUvalde, TX, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 204 groundwater pump testing services based in the United States

See the full list, filter by size, metro and specialty, and access 275 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Groundwater pump testing services based in the United States at a glance

As of Nov 6, 2026
27.6%Verified-email coverage
4.9Average contacts per company
1-10Median size (employees)
1.0%Largest-city concentration · Auburn Hills
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
123
11-50
61
51-200
11
201-500
3
501-1,000
1
5,001-10,000
1

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 204 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 pump testing services” 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 275 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 November 6, 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 pump testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many groundwater pump testing services are there based in the United States?

RevenueBase identified 204 company matches for groundwater pump testing services associated with the United States as of November 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?

Mersino Water Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most groundwater pump testing services?

Auburn Hills leads with 2 company records, followed by Brunswick (2) and Christiansburg (2).

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 275 professional contacts with verified work emails tracked across these 204 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 November 6, 2026.

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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.