Company lists · Data refreshed September 2026

Top 25 Wastewater treatment utilities worldwide

Name: Wastewater treatment utilities worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 5,378 companies tracked

RevenueBase identified 5,378 wastewater treatment utilities worldwide as of September 2026 and tracks 183,531 professional contacts across them, including 52,806 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 treatment utilities 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 treatment utilities 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

5,378Companies

183,531Contacts tracked

52,806Verified emails

0Mobile numbers

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The 25 largest wastewater treatment utilities worldwide

Ranked by team size

Top 25 of 5,378 wastewater treatment utilities worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to wastewater treatment utilities: 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	Veolia	Indirect evidence	Aubervilliers, FranceHQ checked Sep 19, 2026	10001+	30,019 contacts →
	Indirect evidence “Veolia, a global leader in environmental services, works every day to build environmental security for the benefit of public health and the competitiveness of industries and…” Source: RevenueBase Database · checked Sep 19, 2026
2	Sabesp	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	10001+	10,050 contacts →
	Indirect 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 19, 2026
3	Severn Trent	Indirect evidence	Coventry, United KingdomHQ checked Sep 19, 2026	5,001-10,000	5,563 contacts →
	Indirect evidence “Water is wonderful.” Source: RevenueBase Database · checked Sep 19, 2026
4	ION Exchange India LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	3,810 contacts →
	Partial 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
5	American Water	Partial evidence	Camden, NJ, United StatesHQ checked Sep 19, 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 19, 2026
6	CEDAE	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 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 19, 2026
7	Veolia Australia & NEW Zealand	Partial evidence	Pyrmont, AustraliaHQ checked Sep 19, 2026	5,001-10,000	2,476 contacts →
	Partial evidence “Veolia Australia and New Zealand is a leading provider of environmental solutions across water and wastewater services, industrial cleaning, waste management and resource recovery…” Source: RevenueBase Database · checked Sep 19, 2026
8	Carollo Engineers	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,718 contacts →
	Partial evidence “For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.” Source: RevenueBase Database · checked Sep 19, 2026
9	Waternet	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 19, 2026	1,001-5,000	1,627 contacts →
	Indirect evidence “Water is overal om ons heen.” Source: RevenueBase Database · checked Sep 19, 2026
10	MPW Industrial Services	Indirect evidence	Hebron, OH, PalestineHQ checked Sep 19, 2026	1,001-5,000	1,485 contacts →
	Indirect evidence “As the leading provider of integrated, technology-based industrial cleaning, water purification, facility management, and total waste services in North America, MPW assists in…” Source: RevenueBase Database · checked Sep 19, 2026
11	Manila Water	Indirect evidence	Quezon City, PhilippinesHQ checked Sep 19, 2026	1,001-5,000	1,471 contacts →
	Indirect evidence “Manila Water Company, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
12	EBMUD	Strong evidence	Oakland, CA, United StatesHQ checked Sep 19, 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 19, 2026
13	Grupo Águas DO Brasil	Indirect evidence	Niterói, BrazilHQ checked Sep 19, 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 19, 2026
14	Wssc Water	Strong evidence	Laurel, MD, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,288 contacts →
	Strong 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 19, 2026
15	Volvo Eicher Commerical Vehical Limited	Partial evidence	Dhar, IndiaHQ checked Sep 19, 2026	n/a	1,196 contacts →
	Partial 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
16	Urban Utilities	Partial evidence	Fortitude Valley, AustraliaHQ checked Sep 19, 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 19, 2026
17	Inframark	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	973 contacts →
	Indirect 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 19, 2026
18	SIAAP	Indirect evidence	Paris, FranceHQ checked Sep 19, 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 19, 2026
19	Aquafin	Indirect evidence	Aartselaar, BelgiumHQ checked Sep 19, 2026	1,001-5,000	920 contacts →
	Indirect evidence “Aquafin is in 1990 opgericht door het Vlaamse Gewest om de rioolwaterzuiveringsinfrastructuur in Vlaanderen verder uit te bouwen, te exploiteren en te financieren.” Source: RevenueBase Database · checked Sep 19, 2026
20	Essbio	Indirect evidence	Concepcion, ChileHQ checked Sep 19, 2026	1,001-5,000	900 contacts →
	Indirect evidence “Essbio es la segunda empresa sanitaria más importante de Chile.” Source: RevenueBase Database · checked Sep 19, 2026
21	MWH Treatment	Partial evidence	Stockport, United KingdomHQ checked Sep 19, 2026	1,001-5,000	879 contacts →
	Partial 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
22	OVIVO	Partial evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	501-1,000	829 contacts →
	Partial 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
23	Yarra Valley Water	Indirect evidence	Melbourne, AustraliaHQ checked Sep 19, 2026	501-1,000	821 contacts →
	Indirect evidence “We service 2 million people and businesses across a area, from Wallan in the north to Warburton in the east.” Source: RevenueBase Database · checked Sep 19, 2026
24	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
25	Evides Waterbedrijf	Indirect evidence	Rotterdam, NetherlandsHQ checked Sep 19, 2026	501-1,000	753 contacts →
	Indirect evidence “Duurzaam, innovatief en in verbinding met de omgeving; zo werkt Evides Waterbedrijf.” 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 treatment utilities. 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 treatment utilities.
Partial evidence: Its own public description names part of wastewater treatment utilities, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name wastewater treatment utilities. 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 5,378 wastewater treatment utilities worldwide

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Wastewater treatment utilities worldwide at a glance

As of Sep 19, 2026

28.8%Verified-email coverage

34.1Average contacts per company

11-50Median size (employees)

1.8%Largest-city concentration · Pune

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,826

11-50

2,056

51-200

951

201-500

294

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 treatment utilities, 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, Brazil, Italy, Germany, Türkiye, the United Kingdom, Spain, France, Canada and 23 more. Country and city lists for wastewater treatment utilities are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “wastewater treatment utilities”. 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 treatment utilities), 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 treatment utilities, 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, 52,806 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 treatment utilities by location

37 lists · largest first

Every Wastewater treatment utilities 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 treatment utilities, 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 treatment utilities are there worldwide?

RevenueBase identified 5,378 wastewater treatment utilities 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?

Veolia, headquartered in Aubervilliers, tops this list with the largest team on record.

Which country has the most wastewater treatment utilities?

The United States leads with 1,040 companies, followed by India (970) and Brazil (448). Every wastewater treatment utilities list by country and city is linked on this page.

Which city has the most wastewater treatment utilities?

Pune leads with 98 headquartered companies, followed by Ahmedabad (75) and Chennai (63).

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 52,806 verified decision-maker contacts tracked across these 5,378 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.