Company lists · Data refreshed September 2026

Top 25 Municipal water treatment contractors worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 5,847 companies tracked

RevenueBase identified 5,847 municipal water treatment contractors worldwide as of September 2026 and tracks 117,296 professional contacts across them, including 32,571 with verified work emails and 0 with mobile numbers. The United States is the largest market and Pune the largest hub.

This list covers municipal water 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 17, 2026. Country and city lists for municipal water 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 17, 2026 86% judged on-target in blind review

5,847Companies

117,296Contacts tracked

32,571Verified emails

0Mobile numbers

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The 25 largest municipal water treatment contractors worldwide

Ranked by team size

Top 25 of 5,847 municipal water treatment contractors worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to municipal water 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	Sabesp	Strong evidence	Sao Paulo, BrazilHQ checked Sep 17, 2026	10001+	10,050 contacts →
	Strong evidence “Sabesp is a mixed capital company that was founded in 1973 and is currently responsible for supplying water and collecting and treating sewage in the 375 municipalities of São…” Source: RevenueBase Database · checked Sep 17, 2026
2	ION Exchange India LTD	Strong evidence	Mumbai, IndiaHQ checked Sep 17, 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 17, 2026
3	Sydney Water	Partial evidence	Parramatta, AustraliaHQ checked Sep 17, 2026	1,001-5,000	3,609 contacts →
	Partial evidence “We deliver essential and sustainable water services for the benefit of the community.” Source: RevenueBase Database · checked Sep 17, 2026
4	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 17, 2026	1,001-5,000	2,375 contacts →
	Partial evidence “WABAG, a global leader in the water industry, is backed by rich experience spanning over 100 years.” Source: RevenueBase Database · checked Sep 17, 2026
5	Core & Main	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,165 contacts →
	Indirect evidence “Based in St.” Source: RevenueBase Database · checked Sep 17, 2026
6	Vitens	Indirect evidence	Zwolle, NetherlandsHQ checked Sep 17, 2026	1,001-5,000	1,690 contacts →
	Indirect evidence “Vitens is het grootste drinkwaterbedrijf van Nederland.” Source: RevenueBase Database · checked Sep 17, 2026
7	Manila Water	Partial evidence	Quezon City, PhilippinesHQ checked Sep 17, 2026	1,001-5,000	1,471 contacts →
	Partial evidence “Manila Water Company, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
8	Grupo Águas DO Brasil	Indirect evidence	Niterói, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,334 contacts →
	Indirect evidence “Fundado em 1998, o Grupo Águas do Brasil é um dos principais grupos privados de saneamento básico do país, presente em 32 municípios nos estados do Rio de Janeiro, Minas Gerais e…” Source: RevenueBase Database · checked Sep 17, 2026
9	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 17, 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 17, 2026
10	SIAAP	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	1,001-5,000	968 contacts →
	Indirect evidence “Une entreprise publique unique en Europe Son périmètre d'intervention englobe quatre départements et 180 communes reparties sur quatre autres départements, le SIAAP est - le seul…” Source: RevenueBase Database · checked Sep 17, 2026
11	MWH Treatment	Strong evidence	Stockport, United KingdomHQ checked Sep 17, 2026	1,001-5,000	879 contacts →
	Strong 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 17, 2026
12	Chem-Aqua, INC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 17, 2026	10001+	864 contacts →
	Indirect evidence “Chem-Aqua is a unique combination of knowledge, experience and stability.” Source: RevenueBase Database · checked Sep 17, 2026
13	OVIVO	Strong evidence	Montreal, QC, CanadaHQ checked Sep 17, 2026	501-1,000	829 contacts →
	Strong 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 17, 2026
14	DE Watergroep	Indirect evidence	Brussel, BelgiumHQ checked Sep 17, 2026	1,001-5,000	728 contacts →
	Indirect evidence “De Watergroep is het grootste drinkwaterbedrijf in Vlaanderen.” Source: RevenueBase Database · checked Sep 17, 2026
15	Trojan Technologies	Strong evidence	London, ON, CanadaHQ checked Sep 17, 2026	501-1,000	716 contacts →
	Strong evidence “Our Vision To continuously advance water treatment, ensuring everyone has access to clean water, globally.” Source: RevenueBase Database · checked Sep 17, 2026
16	Ontario Clean Water Agency	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 17, 2026	501-1,000	662 contacts →
	Partial evidence “Water is one of our most precious resources.” Source: RevenueBase Database · checked Sep 17, 2026
17	Primewater Infrastructure Corporation	Partial evidence	Mandaluyong, PhilippinesHQ checked Sep 17, 2026	201-500	615 contacts →
	Partial evidence “With over 30 years of industry experience, PrimeWater has provided total professional water and sewage management solutions to all of its partner communities and Water Districts…” Source: RevenueBase Database · checked Sep 17, 2026
18	BWT France	Strong evidence	Saint - Denis, FranceHQ checked Sep 17, 2026	501-1,000	567 contacts →
	Strong evidence “BWT France is one of the largest subsidiaries of Austrian group Best Water Technology ( BWT), the European leader in water treatment.” Source: RevenueBase Database · checked Sep 17, 2026
19	Westech Engineering	Strong evidence	Salt Lake City, UT, United StatesHQ checked Sep 17, 2026	501-1,000	554 contacts →
	Strong 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 17, 2026
20	RSE	Partial evidence	Inverness Highlands, United KingdomHQ checked Sep 17, 2026	501-1,000	498 contacts →
	Partial 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 17, 2026
21	Culligan Italiana S.P.A	Indirect evidence	Bologna, ItalyHQ checked Sep 17, 2026	201-500	489 contacts →
	Indirect evidence “Culligan Italiana è in grado di offrire la soluzione ideale per ogni tipologia di trattamento acqua: piccoli impianti ad uso domestico, erogatori d'acqua per uffici e ristoranti…” Source: RevenueBase Database · checked Sep 17, 2026
22	GMB	Indirect evidence	Opheusden, NetherlandsHQ checked Sep 17, 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 17, 2026
23	Waterleau	Partial evidence	Wespelaar, FranceHQ checked Sep 17, 2026	201-500	411 contacts →
	Partial evidence “Waterleau is your partner in sustainable water stewardship.” Source: RevenueBase Database · checked Sep 17, 2026
24	FARYS	Indirect evidence	Gent, BelgiumHQ checked Sep 17, 2026	501-1,000	390 contacts →
	Indirect evidence “Maatschappelijke zetel: Stropstraat 1 - Gent - ondernemingsnummer (KBO): BE 0200.068.636 Activiteit: Leveren van drinkwater - saneren van afvalwater - bouwen en renoveren van…” Source: RevenueBase Database · checked Sep 17, 2026
25	Kinetico Incorporated	Strong evidence	Newbury, OH, United KingdomHQ checked Sep 17, 2026	201-500	374 contacts →
	Strong evidence “Founded in 1970, Kinetico pioneered the development of non-electric, fully automatic water treatment systems.” Source: RevenueBase Database · checked Sep 17, 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: municipal water 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 municipal water treatment contractors.
Partial evidence: Its own public description names part of municipal water treatment contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal water 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 5,847 municipal water treatment contractors worldwide

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Municipal water treatment contractors worldwide at a glance

As of Sep 17, 2026

27.8%Verified-email coverage

20.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Pune

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

2,203

11-50

2,257

51-200

929

201-500

245

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 municipal water 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: 33 countries, largest first: the United States, India, Italy, Brazil, Germany, Canada, Spain, Türkiye, France, the United Kingdom and 23 more. Country and city lists for municipal water treatment contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “municipal water 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 municipal water 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 municipal water 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, 32,571 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 17, 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.

Municipal water treatment contractors by location

37 lists · largest first

Every Municipal water 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 municipal water 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 municipal water treatment contractors are there worldwide?

RevenueBase identified 5,847 municipal water 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?

Sabesp, headquartered in Sao Paulo, tops this list with the largest team on record.

Which country has the most municipal water treatment contractors?

The United States leads with 1,492 companies, followed by India (873) and Italy (347). Every municipal water treatment contractors list by country and city is linked on this page.

Which city has the most municipal water treatment contractors?

Pune leads with 79 headquartered companies, followed by Ahmedabad (68) and Chennai (65).

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 32,571 verified decision-maker contacts tracked across these 5,847 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 17, 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.