Company lists · Data refreshed September 2026

Top 25 Aqueous waste treatment contractors worldwide

Name: Aqueous waste treatment contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 5,284 companies tracked

RevenueBase identified 5,284 aqueous waste treatment contractors worldwide as of September 2026 and tracks 94,727 professional contacts across them, including 22,482 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers aqueous waste treatment contractors worldwide, 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 30, 2026. Country and city lists for aqueous waste treatment contractors follow the table.

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 30, 2026 86% judged on-target in blind review

5,284Companies

94,727Contacts tracked

22,482Verified emails

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The 25 largest aqueous waste treatment contractors worldwide

Ranked by team size

Top 25 of 5,284 aqueous waste treatment contractors worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to aqueous waste treatment contractors: 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	Clean Harbors	Indirect evidence	Norwell, MA, United StatesHQ checked Sep 30, 2026	10001+	8,924 contacts →
	Indirect evidence “Clean Harbors is North America’s leading provider of environmental and industrial services.” Source: RevenueBase Database · checked Sep 30, 2026
2	GFL Environmental INC	Partial evidence	Vaughan, ON, CanadaHQ checked Sep 30, 2026	10001+	6,179 contacts →
	Partial evidence “GFL Environmental is the only major diversified environmental services company in North America offering services in solid waste management, liquid waste management and soil…” Source: RevenueBase Database · checked Sep 30, 2026
3	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 30, 2026	1,001-5,000	3,810 contacts →
	Strong evidence “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Source: RevenueBase Database · checked Sep 30, 2026
4	Chemtreat	Indirect evidence	Glen Allen, VA, United StatesHQ checked Sep 30, 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 30, 2026
5	Safetykleen	Indirect evidence	Brentford, United KingdomHQ checked Sep 30, 2026	1,001-5,000	1,247 contacts →
	Indirect evidence “We are the World’s leading provider of chemical cleaning & environmental solutions offering a wide range of solutions to address the needs of our diverse customer base.” Source: RevenueBase Database · checked Sep 30, 2026
6	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 30, 2026	n/a	1,196 contacts →
	Strong evidence “Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.” Source: RevenueBase Database · checked Sep 30, 2026
7	Enviroserv Waste Management PTY LTD	Partial evidence	Ekurhuleni, South AfricaHQ checked Sep 30, 2026	1,001-5,000	839 contacts →
	Partial evidence “EnviroServ offers cost-effective solutions to the complex hazardous and non-hazardous waste and chemical pollution problems, providing peace of mind with regard to the legal…” Source: RevenueBase Database · checked Sep 30, 2026
8	Gradiant	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 30, 2026	1,001-5,000	813 contacts →
	Indirect evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 30, 2026
9	Trojan Technologies	Partial evidence	London, ON, CanadaHQ checked Sep 30, 2026	501-1,000	716 contacts →
	Partial evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Source: RevenueBase Database · checked Sep 30, 2026
10	Promotora Ambiental S.A.B. DE C.V	Indirect evidence	Santa María, MexicoHQ checked Sep 30, 2026	5,001-10,000	677 contacts →
	Indirect evidence “En Promotora Ambiental nos hemos especializado en brindar soluciones ambientales a los sectores público y privado, en los campos de comercio e industria.” Source: RevenueBase Database · checked Sep 30, 2026
11	Rochem Separation Systems India Pvt. LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 30, 2026	1,001-5,000	536 contacts →
	Indirect evidence “We as, Rochem Separation Systems offer 100% water reuse solutions to treat industrial wastewater since 1992.” Source: RevenueBase Database · checked Sep 30, 2026
12	Liquid Environmental Solutions	Indirect evidence	Irving, TX, United StatesHQ checked Sep 30, 2026	501-1,000	427 contacts →
	Indirect evidence “Liquid Environmental Solutions - the largest, exclusively non-hazardous US wastewater collection and disposal company, is known for innovation and leadership in protecting…” Source: RevenueBase Database · checked Sep 30, 2026
13	ATICA	Indirect evidence	Bogotá, ColombiaHQ checked Sep 30, 2026	1,001-5,000	421 contacts →
	Indirect evidence “Atica es una compañía que desde hace 30 años trabaja en la valorización, gestión y disposición integral de residuos industriales, hospitalarios, minero energéticos y aceites.” Source: RevenueBase Database · checked Sep 30, 2026
14	Waterleau	Indirect evidence	Wespelaar, FranceHQ checked Sep 30, 2026	201-500	411 contacts →
	Indirect evidence “Waterleau is your partner in sustainable water stewardship.” Source: RevenueBase Database · checked Sep 30, 2026
15	UCC Environmental	Partial evidence	Waukegan, IL, United StatesHQ checked Sep 30, 2026	201-500	389 contacts →
	Partial evidence “UCC Environmental (UCC) is a global leader in environmental solutions for solids handling, wastewater treatment and pollution control technologies in power generation and other…” Source: RevenueBase Database · checked Sep 30, 2026
16	Fisia Italimpianti	Indirect evidence	Genoa, ItalyHQ checked Sep 30, 2026	51-200	362 contacts →
	Indirect evidence “Fisia Italimpianti S.p.A, part of Webuild Group (the new group born in 2020 from Salini Impregilo), is a worldwide leader in the sustainable design and execution of water…” Source: RevenueBase Database · checked Sep 30, 2026
17	Abdullah Ibrahim AL Sayegh And Sons Company	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 30, 2026	1,001-5,000	347 contacts →
	Indirect evidence “Established in 1964, Abdullah Ibrahim Al Sayegh and Sons Company a Closed Joint Stock Co.” Source: RevenueBase Database · checked Sep 30, 2026
18	Vasu Chemicals LLP	Partial evidence	Mumbai, IndiaHQ checked Sep 30, 2026	501-1,000	330 contacts →
	Partial evidence “Vasu Chemicals LLP is India's leading industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 30, 2026
19	Enviro Infra Engineers LTD	Indirect evidence	Delhi, IndiaHQ checked Sep 30, 2026	501-1,000	323 contacts →
	Indirect evidence “Since 2009, Enviro has combined engineering excellence with a commitment to sustainability in water and wastewater solutions across India." Enviro Infra Engineers Limited stands…” Source: RevenueBase Database · checked Sep 30, 2026
20	Evac Group	Partial evidence	Espoo, FinlandHQ checked Sep 30, 2026	501-1,000	319 contacts →
	Partial evidence “Evac Group is a global leader in integrated water, waste and wastewater management solutions, as well as corrosion protection and marine growth prevention systems, for the marine…” Source: RevenueBase Database · checked Sep 30, 2026
21	Parkson Corporation	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 30, 2026	51-200	317 contacts →
	Partial evidence “Parkson Corporation is a supplier of innovative, cost effective solutions for potable water, process water, and industrial and municipal wastewater treatment.” Source: RevenueBase Database · checked Sep 30, 2026
22	Veolia México	Indirect evidence	México D.f., MexicoHQ checked Sep 30, 2026	1,001-5,000	316 contacts →
	Indirect evidence “Veolia en México consolida su presencia y liderazgo local con soluciones medio ambientales de agua, residuos y energía para municipios e industrias.” Source: RevenueBase Database · checked Sep 30, 2026
23	Facsa. Ciclo Integral DEL Agua	Indirect evidence	Castellón De La Plana, SpainHQ checked Sep 30, 2026	1,001-5,000	305 contacts →
	Indirect evidence “Facsa, empresa ‘origen’ de Nealis, es una referencia en el territorio nacional en la gestión global de los recursos hídricos.” Source: RevenueBase Database · checked Sep 30, 2026
24	Osmoflo	Partial evidence	Burton, United StatesHQ checked Sep 30, 2026	201-500	300 contacts →
	Partial evidence “Osmoflo develops efficient, sustainable and scalable water and wastewater treatment solutions.” Source: RevenueBase Database · checked Sep 30, 2026
25	Infiltrator Water Technologies Decentralized Wastewater Treatment Solutions	Partial evidence	Old Saybrook, CT, United StatesHQ checked Sep 30, 2026	501-1,000	295 contacts →
	Partial evidence “Protecting the environment with innovative wastewater treatment solutions for over 35 years, Infiltrator is the leading manufacturer of onsite wastewater treatment products in…” Source: RevenueBase Database · checked Sep 30, 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: aqueous waste treatment contractors. 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 aqueous waste treatment contractors.
Partial evidence: Its own public description names part of aqueous waste treatment contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name aqueous waste treatment contractors. 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 5,284 aqueous waste treatment contractors worldwide

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Aqueous waste treatment contractors worldwide at a glance

As of Sep 30, 2026

23.7%Verified-email coverage

17.9Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Pune

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,927

11-50

2,067

51-200

901

201-500

234

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 aqueous waste treatment contractors, 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.
Coverage: Every country. Country and city lists for aqueous waste treatment contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “aqueous waste treatment contractors”. 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 aqueous waste treatment contractors), 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 aqueous waste treatment contractors, and records with no verified work email.
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, 22,482 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 30, 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.

Aqueous waste treatment contractors by location

29 lists · largest first

Every Aqueous waste treatment contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 aqueous waste treatment contractors, 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 aqueous waste treatment contractors are there worldwide?

RevenueBase identified 5,284 aqueous waste treatment contractors worldwide 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?

Clean Harbors, headquartered in Norwell, tops this list with the largest team on record.

Which country has the most aqueous waste treatment contractors?

The United States leads with 886 companies, followed by India (649) and Brazil (321). Every aqueous waste treatment contractors list by country and city is linked on this page.

Which city has the most aqueous waste treatment contractors?

Pune leads with 64 headquartered companies, followed by Ahmedabad (51) and Chennai (40).

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 22,482 verified decision-maker contacts tracked across these 5,284 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 30, 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.