Company lists · Data refreshed September 2026

Top 25 Municipal water treatment providers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 5,650 companies tracked

RevenueBase identified 5,650 municipal water treatment providers worldwide as of September 2026 and tracks 157,946 professional contacts across them, including 47,033 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers municipal water treatment providers 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 20, 2026. Country and city lists for municipal water treatment providers 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 20, 2026 86% judged on-target in blind review

5,650Companies

157,946Contacts tracked

47,033Verified emails

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The 25 largest municipal water treatment providers worldwide

Ranked by team size

Top 25 of 5,650 municipal water treatment providers worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to municipal water treatment 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	Sabesp	Strong evidence	Sao Paulo, BrazilHQ checked Sep 20, 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 20, 2026
2	Severn Trent	Partial evidence	Coventry, United KingdomHQ checked Sep 20, 2026	5,001-10,000	5,563 contacts →
	Partial evidence “Water is wonderful.” Source: RevenueBase Database · checked Sep 20, 2026
3	Sydney Water	Partial evidence	Parramatta, AustraliaHQ checked Sep 20, 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 20, 2026
4	BRK Ambiental	Indirect evidence	BrazilHQ checked Sep 20, 2026	5,001-10,000	3,306 contacts →
	Indirect evidence “A BRK é uma das maiores empresas privadas de saneamento do país e está presente em 13 estados e mais de 100 municípios, beneficiando a vida de mais de 16 milhões de pessoas.” Source: RevenueBase Database · checked Sep 20, 2026
5	American Water	Partial evidence	Camden, NJ, United StatesHQ checked Sep 20, 2026	5,001-10,000	2,876 contacts →
	Partial evidence “American Water (NYSE: AWK) is the largest regulated water and wastewater utility company in the United States.” Source: RevenueBase Database · checked Sep 20, 2026
6	Corsan	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 20, 2026	1,001-5,000	2,788 contacts →
	Indirect evidence “Atendendo a mais de 6,5 milhões de clientes, a Corsan é responsável pelo saneamento básico em 317 cidades do Rio Grande do Sul.” Source: RevenueBase Database · checked Sep 20, 2026
7	CEDAE	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 20, 2026	1,001-5,000	2,478 contacts →
	Indirect evidence “Constituída oficialmente em 1º de agosto de 1975, a Companhia Estadual de Águas e Esgotos (CEDAE) é oriunda da fusão da Empresa de Águas do Estado da Guanabara (CEDAG), da Empresa…” Source: RevenueBase Database · checked Sep 20, 2026
8	VA Tech Wabag LTD	Partial evidence	Wabag House, IndiaHQ checked Sep 20, 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 20, 2026
9	DŴR Cymru Welsh Water	Indirect evidence	Cardiff, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,868 contacts →
	Indirect evidence “Bath-times, half-times, party-times, meeting-times, and cooking-times.” Source: RevenueBase Database · checked Sep 20, 2026
10	Uisce Éireann Irish Water	Indirect evidence	Dublin, IrelandHQ checked Sep 20, 2026	1,001-5,000	1,763 contacts →
	Indirect evidence “We are Uisce Éireann.” Source: RevenueBase Database · checked Sep 20, 2026
11	Vitens	Indirect evidence	Zwolle, NetherlandsHQ checked Sep 20, 2026	1,001-5,000	1,690 contacts →
	Indirect evidence “Vitens is het grootste drinkwaterbedrijf van Nederland.” Source: RevenueBase Database · checked Sep 20, 2026
12	Aguas Andinas	Indirect evidence	Las Condes, ChileHQ checked Sep 20, 2026	1,001-5,000	1,553 contacts →
	Indirect evidence “Nuestra gestión se sustenta en altos estándares de profesionalismo y experiencia que nos permite entregar un servicio de gran calidad, cautelando la sostenibilidad de los recursos…” Source: RevenueBase Database · checked Sep 20, 2026
13	SEAAL	Indirect evidence	Alger, AlgeriaHQ checked Sep 20, 2026	5,001-10,000	1,543 contacts →
	Indirect evidence “La Société des Eaux et de l’Assainissement d’Alger (SEAAL), est une Société Publique par actions, détenue à 70% par l’Algérienne des Eaux (ADE) et à 30% par l’Office National de…” Source: RevenueBase Database · checked Sep 20, 2026
14	AQUA	Partial evidence	Bryn Mawr, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,478 contacts →
	Partial evidence “Aqua is one of the largest U.S-based, publicly traded water and wastewater utilities, serving more than 3 million people in Illinois, Indiana, New Jersey, North Carolina…” Source: RevenueBase Database · checked Sep 20, 2026
15	Manila Water	Partial evidence	Quezon City, PhilippinesHQ checked Sep 20, 2026	1,001-5,000	1,471 contacts →
	Partial evidence “Manila Water Company, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
16	EBMUD	Strong evidence	Oakland, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,434 contacts →
	Strong evidence “East Bay Municipal Utility District is a California public utility that supplies high-quality drinking water, generates renewable energy and provides wastewater treatment and…” Source: RevenueBase Database · checked Sep 20, 2026
17	National Water & Sewerage Corporation Nwsc	Partial evidence	Kampala, UgandaHQ checked Sep 20, 2026	1,001-5,000	1,364 contacts →
	Partial evidence “Established in 1972, the mandate of the National Water and Sewerage Corporation (NWSC) as defined in the NWSC Act Cap 317, is to operate and provide water and sewerage services in…” Source: RevenueBase Database · checked Sep 20, 2026
18	Wssc Water	Partial evidence	Laurel, MD, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,288 contacts →
	Partial evidence “Established in 1918, WSSC Water is currently among the largest water and wastewater utilities in the nation, with a network of nearly miles of drinking water pipeline and over…” Source: RevenueBase Database · checked Sep 20, 2026
19	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 20, 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 20, 2026
20	Watercare Services Limited	Indirect evidence	Auckland, New ZealandHQ checked Sep 20, 2026	1,001-5,000	1,116 contacts →
	Indirect evidence “At Watercare we’re proud to provide a lifeline service to the people of Auckland, while protecting the environment for future generations.” Source: RevenueBase Database · checked Sep 20, 2026
21	Urban Utilities	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 20, 2026	1,001-5,000	1,064 contacts →
	Partial evidence “We’re responsible for delivering world-class drinking water and wastewater services to the growing communities of Brisbane, Ipswich, Lockyer Valley, Somerset and Scenic Rim.” Source: RevenueBase Database · checked Sep 20, 2026
22	AIR Selangor	Partial evidence	Kuala Lumpur, MalaysiaHQ checked Sep 20, 2026	5,001-10,000	1,061 contacts →
	Partial evidence “Pengurusan Air Selangor Sdn Bhd (Air Selangor) is the largest water services provider in Malaysia, providing clean and safe treated water to 9.62 million consumers in Selangor…” Source: RevenueBase Database · checked Sep 20, 2026
23	Inframark	Partial evidence	Horsham, PA, United StatesHQ checked Sep 20, 2026	1,001-5,000	973 contacts →
	Partial evidence “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Source: RevenueBase Database · checked Sep 20, 2026
24	SIAAP	Indirect evidence	Paris, FranceHQ checked Sep 20, 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 20, 2026
25	Denver Water	Partial evidence	Denver, CO, United StatesHQ checked Sep 20, 2026	1,001-5,000	931 contacts →
	Partial evidence “Denver Water proudly serves high-quality water and promotes its efficient use to 1.5 million people in the city of Denver and many surrounding suburbs.” 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: municipal water treatment 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 municipal water treatment providers.
Partial evidence: Its own public description names part of municipal water treatment providers, 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 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 5,650 municipal water treatment providers worldwide

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Municipal water treatment providers worldwide at a glance

As of Sep 20, 2026

29.8%Verified-email coverage

28.0Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Pune

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

2,163

11-50

1,969

51-200

906

201-500

315

501-1,000

112

1,001-5,000

108

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 municipal water treatment 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.
Coverage: Every country. Country and city lists for municipal water treatment providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “municipal water treatment 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 municipal water treatment 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 municipal water treatment providers, 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, 47,033 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.

Municipal water treatment providers by location

33 lists · largest first

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

RevenueBase identified 5,650 municipal water treatment providers 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 providers?

The United States leads with 1,244 companies, followed by India (490) and Brazil (274). Every municipal water treatment providers list by country and city is linked on this page.

Which city has the most municipal water treatment providers?

Pune leads with 50 headquartered companies, followed by Ahmedabad (41) and New Delhi (34).

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 47,033 verified decision-maker contacts tracked across these 5,650 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.