Company lists · Data refreshed October 2026

Top 25 Industrial water treatment consultants based in the United States

RevenueBase identified 2,542 company matches for industrial water treatment consultants associated with the United States as of October 2026 and tracks 77,119 professional contacts across them, including 30,925 with verified work emails. Houston is the largest hub.

This list covers company matches for industrial water treatment consultants 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 October 16, 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 Oct 16, 2026 How this list was built
2,542Companies
77,119Contacts tracked
30,925Verified emails
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The 25 largest industrial water treatment consultants based in the United States

Ranked by team size
Top 25 of 2,542 company matches for industrial water treatment consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 16, 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 matchPasadena, CA, United StatesHQ recorded Oct 16, 202610001+13,725 contacts →

Exact match

“Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
2Exact matchWilmington, DE, United StatesHQ recorded Oct 16, 202610001+6,565 contacts →

Exact match

“Solenis is a leading global provider of water and hygiene solutions.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
3Exact matchWalnut Creek, CA, United StatesHQ recorded Oct 16, 20261,001-5,0002,510 contacts →

Exact match

“Headquartered in Walnut Creek, Calif, Brown and Caldwell is an employee-owned firm with 2,100+ professionals serving clients locally and globally from 52 locations.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Oct 16, 20261,001-5,0002,251 contacts →

Exact match

“As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
5Exact matchWalnut Creek, CA, United StatesHQ recorded Oct 16, 20261,001-5,0001,811 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 · Oct 16, 2026 · View company records in RevenueBase
6Exact matchGlen Allen, VA, United StatesHQ recorded Oct 16, 20261,001-5,0001,475 contacts →

Exact match

“At ChemTreat, we understand that water is a vital resource for our planet.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
7Exact matchMinneapolis, MN, United StatesHQ recorded Oct 16, 20261,001-5,0001,108 contacts →

Exact match

“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
8Exact matchCanonsburg, PA, United StatesHQ recorded Oct 16, 2026501-1,000968 contacts →

Exact match

“Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
9Exact matchSharonville, OH, United StatesHQ recorded Oct 16, 20261,001-5,000932 contacts →

Exact match

“DuBois has been serving customers since 1920.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
10Exact matchWilmington, DE, United StatesHQ recorded Oct 16, 202610001+901 contacts →

Exact match

“Chem-Aqua is a unique combination of knowledge, experience and stability.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
11Exact matchWoburn, MA, United StatesHQ recorded Oct 16, 20261,001-5,000874 contacts →

Exact match

“Gradiant is a Different Kind of Water Company.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
12Exact matchLafayette, LA, United StatesHQ recorded Oct 16, 20261,001-5,000872 contacts →

Exact match

“ATC Group Services LLC is now Atlas.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
13Exact matchAddison, TX, United StatesHQ recorded Oct 16, 20261,001-5,000692 contacts →

Exact match

“CECO Environmental is a leading environmentally focused, diversified industrial company whose solutions protect people, the environment, and industrial equipment across the globe…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
14Exact matchSalt Lake City, UT, United StatesHQ recorded Oct 16, 2026501-1,000577 contacts →

Exact match

“WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
15Exact matchSulphur, LA, United StatesHQ recorded Oct 16, 2026501-1,000412 contacts →

Exact match

“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
16Exact matchCrystal Lake, IL, United StatesHQ recorded Oct 16, 2026201-500406 contacts →

Exact match

“Founded in 1946, Baxter & Woodman, Inc.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
17Exact matchWaukegan, IL, United StatesHQ recorded Oct 16, 2026201-500401 contacts →

Exact match

“UCC Environmental (UCC) is a global leader in environmental solutions for solids handling, wastewater treatment and pollution control technologies in power generation and other…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
18Exact matchFort Lauderdale, FL, United StatesHQ recorded Oct 16, 202651-200356 contacts →

Exact match

“Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
19Exact matchGrand Forks, ND, United StatesHQ recorded Oct 16, 2026201-500349 contacts →

Exact match

“AE2S is a specialized civil/environmental consulting engineering firm that provides professional services and our unique brand of extreme client service to clients in the upper…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
20Exact matchGeismar, LA, United StatesHQ recorded Oct 16, 202651-200316 contacts →

Exact match

“At Spectrum, our mission is simple: to provide smarter, more efficient, and sustainable water solutions.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
21Exact matchOld Saybrook, CT, United StatesHQ recorded Oct 16, 2026501-1,000297 contacts →

Exact match

“Protecting the environment with innovative wastewater treatment solutions for over 35 years, Infiltrator is the leading manufacturer of onsite wastewater treatment products in…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
22Exact matchDavis, CA, United StatesHQ recorded Oct 16, 2026201-500288 contacts →

Exact match

“West Yost is a water-focused consulting engineering firm ranked by Fortune Magazine as one of the “Best Small and Medium Workplaces in Consulting and Professional Services” 2023 -…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
23Exact matchLombard, IL, United StatesHQ recorded Oct 16, 2026501-1,000277 contacts →

Exact match

“Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Oct 16, 2026201-500272 contacts →

Exact match

“GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase
25Exact matchLos Alamitos, CA, United StatesHQ recorded Oct 16, 2026501-1,000260 contacts →

Exact match

“Founded in 1968, Ancon Services has expanded our services to cover virtually all of our clients industrial and environmental needs.”

Recorded in the RevenueBase company graph · Oct 16, 2026 · View company records in RevenueBase

Showing 25 of 2,542 industrial water treatment consultants based in the United States

See the full list, filter by size, metro and specialty, and access 30,925 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Industrial water treatment consultants based in the United States at a glance

As of Oct 16, 2026
40.1%Verified-email coverage
30.3Average contacts per company
11-50Median size (employees)
2.4%Largest-city concentration · Houston
Oct 16, 2026Page data refreshed

Companies by employee count

1-10
1,176
11-50
912
51-200
321
201-500
62
501-1,000
20
1,001-5,000
20
5,001-10,000
6
10001+
10

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 2,542 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 “industrial water treatment consultants” 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 30,925 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 October 16, 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.

Industrial water treatment consultants by metro

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 “industrial water treatment consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial water treatment consultants are there based in the United States?

RevenueBase identified 2,542 company matches for industrial water treatment consultants associated with the United States as of October 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?

Tetra Tech tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most industrial water treatment consultants?

Houston leads with 61 company records, followed by Tampa (23) and Charlotte (21).

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 30,925 professional contacts with verified work emails tracked across these 2,542 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 October 16, 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.