Company lists · Data refreshed September 2026

Top 25 Pretreatment service providers based in the United States

Name: Pretreatment service providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 181 companies tracked

RevenueBase identified 181 pretreatment service providers headquartered in the United States as of September 2026 and tracks 4,279 professional contacts across them, including 1,703 with verified work emails. Houston is the largest hub.

This list covers pretreatment service providers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

181Companies

4,279Contacts tracked

1,703Verified emails

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The 25 largest pretreatment service providers based in the United States

Ranked by team size

Top 25 of 181 pretreatment service providers based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to pretreatment service providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Chemtreat	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,404 contacts →
	Indirect evidence “At ChemTreat, we understand that water is a vital resource for our planet.” Source: RevenueBase Database · checked Sep 20, 2026
2	Evergreen North America Industrial Services	Indirect evidence	La Porte, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	468 contacts →
	Indirect evidence “Evergreen North America Industrial Services offers a comprehensive range of Industrial Services for oil refineries, petrochemical plants, power generation plants, manufacturing…” Source: RevenueBase Database · checked Sep 20, 2026
3	Valicor	Indirect evidence	Monroe, OH, United StatesHQ checked Sep 20, 2026	201-500	254 contacts →
	Indirect evidence “Valicor is a trusted partner for sustainable waste management solutions.” Source: RevenueBase Database · checked Sep 20, 2026
4	Stage 3 Separation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	205 contacts →
	Indirect evidence “Stage 3 Separation is North America’s leading service provider for fluid conservation, solids control and waste mitigation.” Source: RevenueBase Database · checked Sep 20, 2026
5	USP Technologies	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 20, 2026	51-200	110 contacts →
	Indirect evidence “USP Technologies provides performance-driven, full-service environmental treatment programs to help purify water, wastewater, soil and air.” Source: RevenueBase Database · checked Sep 20, 2026
6	World Water Works, INC	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 20, 2026	51-200	97 contacts →
	Indirect evidence “At World Water Works, we strive to provide industrial and municipal customers with proven and cost-effective wastewater treatment solutions that deliver superior effluent quality.” Source: RevenueBase Database · checked Sep 20, 2026
7	Envirogen Technologies, INC	Indirect evidence	Kingwood, TX, United StatesHQ checked Sep 20, 2026	51-200	96 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
8	Prochem INC	Indirect evidence	Elliston, VA, United StatesHQ checked Sep 20, 2026	51-200	95 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
9	Samco Technologies	Indirect evidence	Buffalo, NY, United StatesHQ checked Sep 20, 2026	51-200	82 contacts →
	Indirect evidence “At SAMCO Technologies, Inc, we provide cutting-edge water, wastewater, and process separation solutions for some of the world’s most demanding industries, including power…” Source: RevenueBase Database · checked Sep 20, 2026
10	Kroff, INC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 20, 2026	51-200	79 contacts →
	Indirect evidence “One name.” Source: RevenueBase Database · checked Sep 20, 2026
11	Monroe Environmental Corp	Indirect evidence	Monroe, MI, United StatesHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “Monroe Environmental is a premier provider of water/wastewater treatment and air pollution control systems and services in the United States and throughout the world.” Source: RevenueBase Database · checked Sep 20, 2026
12	Orion Water Solutions	Indirect evidence	Austin, United StatesHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “ORION Water Solutions is composed of a group of industry proven water treatment engineers, automation experts, field operators, and technicians who have treated over 1 billion…” Source: RevenueBase Database · checked Sep 20, 2026
13	Proact Services Corporation	Indirect evidence	Ludington, MI, United StatesHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “The Leading Manufacturer of Reliable Rental, New and Used, Environmental Remediation Treatment Systems and Services to Consultants and their Clients and… The National Leader in…” Source: RevenueBase Database · checked Sep 20, 2026
14	Cambrian	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	37 contacts →
	Indirect evidence “At Cambrian our vision is simple: industry is an ecosystem.” Source: RevenueBase Database · checked Sep 20, 2026
15	Athlon Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	36 contacts →
	Indirect evidence “Athlon, a Halliburton Service, provides specialty water and process treatment chemicals, customized engineering solutions, and services to the industrial sector, including the…” Source: RevenueBase Database · checked Sep 20, 2026
16	Environmental Remedies, LLC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	51-200	33 contacts →
	Indirect evidence “Environmental Remedies, LLC Your trusted partner for safe, sustainable, and cost-effective environmental services.” Source: RevenueBase Database · checked Sep 20, 2026
17	Clarity Water Technologies, LLC	Indirect evidence	Orangeburg, NY, United StatesHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “Clarity Water Technologies specializes in comprehensive industrial and commercial water treatment that includes expert consulting and cutting-edge chemistry, as well as a…” Source: RevenueBase Database · checked Sep 20, 2026
18	Wastech Controls And Engineering	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “We are the premier manufacturer of fully-automated, skid-mounted pH Adjustment Systems, Pump Lift Stations, Chemical Collection Cabinets, Solvent Collection Cabinets, Heavy Metal…” Source: RevenueBase Database · checked Sep 20, 2026
19	Hydro Solutions, INC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence “Hydro Solutions, Inc, a multi-million dollar company, was founded in 1993 to focus on developing a nationwide business which specializes in providing engineered solutions for…” Source: RevenueBase Database · checked Sep 20, 2026
20	Macdermid Envio Solutions	Indirect evidence	Rock Hill, SC, United StatesHQ checked Sep 20, 2026	1,001-5,000	26 contacts →
	Indirect evidence “MacDermid Envio Solutions (MES) is a business focused on delivering wastewater treatment systems, water and metal recycling, wastewater treatment chemistry and technical services…” Source: RevenueBase Database · checked Sep 20, 2026
21	Water Standard	Indirect evidence	Houston, United StatesHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Water Standard, a global leader in water treatment, is committed to providing innovative solutions for the energy industry’s water challenges.” Source: RevenueBase Database · checked Sep 20, 2026
22	Aries Chemical, INC	Indirect evidence	Beaver Falls, NY, United StatesHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “From the beginning, Aries has kept a clear focus on our mission to provide the highest quality water treatment products and services through the highest quality personnel for the…” Source: RevenueBase Database · checked Sep 20, 2026
23	Guardian CSC	Indirect evidence	York, PA, United StatesHQ checked Sep 20, 2026	51-200	23 contacts →
	Indirect evidence “GUARDIAN CSC is the Mid Atlantic’s fastest growing water technologies company.” Source: RevenueBase Database · checked Sep 20, 2026
24	Aquacycl	Indirect evidence	Escondido, CA, United StatesHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “Providing industrial wastewater treatment solutions for the most challenging wastewater problems.” Source: RevenueBase Database · checked Sep 20, 2026
25	Truclear Water Solutions, INC	Indirect evidence	Abilene, TX, United StatesHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “TruClear is a specialized service provider that deals with the treatment of contaminated water.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: pretreatment service providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names pretreatment service providers.
Partial evidence: Its own public description names part of pretreatment service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name pretreatment service providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 181 pretreatment service providers based in the United States

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Pretreatment service providers based in the United States at a glance

As of Sep 20, 2026

39.8%Verified-email coverage

23.6Average contacts per company

11-50Median size (employees)

5.0%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 181 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among pretreatment service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “pretreatment service providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names pretreatment service providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among pretreatment service providers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,703 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names pretreatment service providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many pretreatment service providers are there based in the United States?

RevenueBase identified 181 pretreatment service providers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Chemtreat, headquartered in Glen Allen, tops this list with the largest team on record.

Which city has the most pretreatment service providers?

Houston leads with 9 headquartered companies, followed by Atlanta (3) and Los Angeles (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,703 verified decision-maker contacts tracked across these 181 companies.

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.

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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 Smart Search, 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.