Company lists · Data refreshed September 2026

Top 25 Wastewater recycling system contractors worldwide

Name: Wastewater recycling system contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 5,131 companies tracked

RevenueBase identified 5,131 wastewater recycling system contractors worldwide as of September 2026 and tracks 80,109 professional contacts across them, including 20,840 with verified work emails and 0 with mobile numbers. The United States is the largest market and Pune the largest hub.

This list covers wastewater recycling system 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 19, 2026. Country and city lists for wastewater recycling system 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 19, 2026 86% judged on-target in blind review

5,131Companies

80,109Contacts tracked

20,840Verified emails

0Mobile numbers

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The 25 largest wastewater recycling system contractors worldwide

Ranked by team size

Top 25 of 5,131 wastewater recycling system contractors worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater recycling system 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	ION Exchange India LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	3,810 contacts →
	Indirect 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 19, 2026
2	VA Tech Wabag LTD	Indirect evidence	Wabag House, IndiaHQ checked Sep 19, 2026	1,001-5,000	2,375 contacts →
	Indirect evidence “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Source: RevenueBase Database · checked Sep 19, 2026
3	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 19, 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 19, 2026
4	Aquatech	Indirect evidence	Canonsburg, PA, United StatesHQ checked Sep 19, 2026	501-1,000	903 contacts →
	Indirect evidence “Aquatech enables the world's most recognized companies to solve complex challenges in water reuse, desalination, minimal and zero liquid discharge, and critical minerals…” Source: RevenueBase Database · checked Sep 19, 2026
5	MWH Treatment	Indirect evidence	Stockport, United KingdomHQ checked Sep 19, 2026	1,001-5,000	879 contacts →
	Indirect evidence “MWH Treatment is a leading Design and Build non-infrastructure solution provider in the UK water sector, with a water sector heritage dating back to 1820.” Source: RevenueBase Database · checked Sep 19, 2026
6	OVIVO	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	501-1,000	829 contacts →
	Indirect evidence “Ovivo is a powerful global brand, uniting world-renowned trademarks and a highly specialized team of 700 water treatment experts operating across the globe.” Source: RevenueBase Database · checked Sep 19, 2026
7	Gradiant	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	813 contacts →
	Indirect evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 19, 2026
8	Ward And Burke	Indirect evidence	Kilcolgan, IrelandHQ checked Sep 19, 2026	1,001-5,000	632 contacts →
	Indirect evidence “Since its establishment, Ward & Burke has sought to develop and adopt the ideals and aspirations to civil engineering construction and currently delivers class leading, reliable…” Source: RevenueBase Database · checked Sep 19, 2026
9	Nijhuis Saur Industries	Indirect evidence	Doetinchem, NetherlandsHQ checked Sep 19, 2026	1,001-5,000	609 contacts →
	Indirect evidence “Founded in 1904, Nijhuis Saur Industries provides solid and adaptive solutions for sustainable and resilient water use, energy- and resource recovery.” Source: RevenueBase Database · checked Sep 19, 2026
10	Westech Engineering	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 19, 2026	501-1,000	554 contacts →
	Partial evidence “WesTech Engineering, LLC designs, engineers, and manufactures water and wastewater treatment process equipment for mineral, industrial, and municipal applications worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
11	Rochem Separation Systems India Pvt. LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	536 contacts →
	Strong evidence “We as, Rochem Separation Systems offer 100% water reuse solutions to treat industrial wastewater since 1992.” Source: RevenueBase Database · checked Sep 19, 2026
12	RSE	Strong evidence	Inverness Highlands, United KingdomHQ checked Sep 19, 2026	501-1,000	498 contacts →
	Strong evidence “RSE is a trusted clean water technology company, developing market leading products and solutions for purifying drinking water, recycling wastewater and cleaning water in…” Source: RevenueBase Database · checked Sep 19, 2026
13	GS Inima Brasil	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	439 contacts →
	Indirect evidence “A GS Inima Brasil é uma das maiores e mais respeitadas companhias privadas de saneamento do país, oferecendo soluções inovadoras e integradas.” Source: RevenueBase Database · checked Sep 19, 2026
14	GMB	Indirect evidence	Opheusden, NetherlandsHQ checked Sep 19, 2026	501-1,000	435 contacts →
	Indirect evidence “Al ruim een halve eeuw zetten we ons in voor duurzame oplossingen op het gebied van waterkwaliteit, waterveiligheid, bio-energie en industriële bouw en infra.” Source: RevenueBase Database · checked Sep 19, 2026
15	Grupo EP	Indirect evidence	Guarulhos, BrazilHQ checked Sep 19, 2026	501-1,000	434 contacts →
	Indirect evidence “Identificamos e solucionamos problemas relacionados ao tratamento de água e efluentes, reúso, dessalinização e análises ambientais para indústrias, consultorias ambientais e…” Source: RevenueBase Database · checked Sep 19, 2026
16	Waterleau	Indirect evidence	Wespelaar, FranceHQ checked Sep 19, 2026	201-500	411 contacts →
	Indirect evidence “Waterleau is your partner in sustainable water stewardship.” Source: RevenueBase Database · checked Sep 19, 2026
17	UCC Environmental	Partial evidence	Waukegan, IL, United StatesHQ checked Sep 19, 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 19, 2026
18	Gratt Indústria E Tecnologia Ambiental Ltda	Indirect evidence	Capinzal, BrazilHQ checked Sep 19, 2026	1,001-5,000	376 contacts →
	Indirect evidence “Desenvolvemos soluções industriais completas para separação de materiais, recuperação de matérias-primas, processamento de subprodutos e tratamento ambiental, apoiando empresas na…” Source: RevenueBase Database · checked Sep 19, 2026
19	Kinetico Incorporated	Partial evidence	Newbury, OH, United KingdomHQ checked Sep 19, 2026	201-500	374 contacts →
	Partial evidence “Founded in 1970, Kinetico pioneered the development of non-electric, fully automatic water treatment systems.” Source: RevenueBase Database · checked Sep 19, 2026
20	Fisia Italimpianti	Indirect evidence	Genova, ItalyHQ checked Sep 19, 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 19, 2026
21	L&t	Indirect evidence	Chennai, IndiaHQ checked Sep 19, 2026	5,001-10,000	350 contacts →
	Indirect evidence “L&T Construction's Water & Effluent Treatment business vertical provides state-of-the-art design, detailed engineering, procurement, project management, project execution…” Source: RevenueBase Database · checked Sep 19, 2026
22	Vasu Chemicals LLP	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	501-1,000	330 contacts →
	Indirect evidence “Vasu Chemicals LLP is India's leading industrial water treatment solutions provider.” Source: RevenueBase Database · checked Sep 19, 2026
23	Enviro Infra Engineers LTD	Partial evidence	Delhi, IndiaHQ checked Sep 19, 2026	501-1,000	323 contacts →
	Partial 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 19, 2026
24	Parkson Corporation	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 19, 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 19, 2026
25	Enfil S A	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	307 contacts →
	Indirect evidence “Com mais de 30 anos de atuação no mercado brasileiro, a Enfil é uma empresa referência em soluções ambientais para tratamento de água, efluentes e controle de emissões…” Source: RevenueBase Database · checked Sep 19, 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: wastewater recycling system 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 wastewater recycling system contractors.
Partial evidence: Its own public description names part of wastewater recycling system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater recycling system 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 5,131 wastewater recycling system contractors worldwide

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Wastewater recycling system contractors worldwide at a glance

As of Sep 19, 2026

26.0%Verified-email coverage

15.6Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Pune

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,892

11-50

2,066

51-200

829

201-500

198

501-1,000

1,001-5,000

5,001-10,000

10001+

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 wastewater recycling system 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: 32 countries, largest first: the United States, India, Italy, Brazil, Germany, the United Kingdom, France, Türkiye, Spain, Canada and 22 more. Country and city lists for wastewater recycling system contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “wastewater recycling system 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 wastewater recycling system 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 wastewater recycling system 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, 20,840 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 19, 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.

Wastewater recycling system contractors by location

36 lists · largest first

Every Wastewater recycling system 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 wastewater recycling system 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 wastewater recycling system contractors are there worldwide?

RevenueBase identified 5,131 wastewater recycling system 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?

ION Exchange India LTD, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most wastewater recycling system contractors?

The United States leads with 1,066 companies, followed by India (958) and Italy (271). Every wastewater recycling system contractors list by country and city is linked on this page.

Which city has the most wastewater recycling system contractors?

Pune leads with 96 headquartered companies, followed by Ahmedabad (70) and Chennai (64).

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 20,840 verified decision-maker contacts tracked across these 5,131 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 19, 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.