Company lists · Data refreshed September 2026

Top 25 Sewage treatment plant operators worldwide

Name: Sewage treatment plant operators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 5,544 companies tracked

RevenueBase identified 5,544 sewage treatment plant operators worldwide as of September 2026 and tracks 182,913 professional contacts across them, including 49,204 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers sewage treatment plant operators 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 22, 2026. Country and city lists for sewage treatment plant operators 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 22, 2026 86% judged on-target in blind review

5,544Companies

182,913Contacts tracked

49,204Verified emails

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The 25 largest sewage treatment plant operators worldwide

Ranked by team size

Top 25 of 5,544 sewage treatment plant operators worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sewage treatment plant operators: 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 22, 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 22, 2026
2	Clean Harbors	Indirect evidence	Norwell, MA, United StatesHQ checked Sep 22, 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 22, 2026
3	GFL Environmental INC	Indirect evidence	Vaughan, ON, CanadaHQ checked Sep 22, 2026	10001+	6,179 contacts →
	Indirect 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 22, 2026
4	Severn Trent	Indirect evidence	Coventry, United KingdomHQ checked Sep 22, 2026	5,001-10,000	5,563 contacts →
	Indirect evidence “Water is wonderful.” Source: RevenueBase Database · checked Sep 22, 2026
5	ION Exchange India LTD	Partial evidence	Mumbai, IndiaHQ checked Sep 22, 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 22, 2026
6	Aegea Saneamento	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 22, 2026	10001+	3,386 contacts →
	Indirect evidence “Somos a Aegea Saneamento, empresa líder no setor.” Source: RevenueBase Database · checked Sep 22, 2026
7	Cleanaway Waste Management	Indirect evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	5,001-10,000	3,005 contacts →
	Indirect evidence “Cleanaway Waste Management Limited is Australia’s largest, publicly listed waste management company.” Source: RevenueBase Database · checked Sep 22, 2026
8	RE Sustainability Limited	Indirect evidence	Hyderabad, IndiaHQ checked Sep 22, 2026	10001+	2,607 contacts →
	Indirect evidence “Re Sustainability Limited (RE), a KKR-backed company, is one of Asia’s leading providers of comprehensive environment management services.” Source: RevenueBase Database · checked Sep 22, 2026
9	Sanepar	Indirect evidence	Curitiba, BrazilHQ checked Sep 22, 2026	5,001-10,000	1,736 contacts →
	Indirect evidence “Visão e Missão Nossa Visão Consolidar a Sanepar como empresa pública, comprometida com a universalização do acesso aos serviços de saneamento ambiental.” Source: RevenueBase Database · checked Sep 22, 2026
10	MPW Industrial Services	Indirect evidence	Hebron, OH, PalestineHQ checked Sep 22, 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 22, 2026
11	Manila Water	Indirect evidence	Quezon City, PhilippinesHQ checked Sep 22, 2026	1,001-5,000	1,471 contacts →
	Indirect evidence “Manila Water Company, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
12	Kurita Group	Indirect evidence	Tokyo, JapanHQ checked Sep 22, 2026	5,001-10,000	1,360 contacts →
	Indirect evidence “For more than 70 years, since its founding in 1949, Kurita Water Industries has been consistently operating in two areas of "water and the environment." Kurita Group provides…” Source: RevenueBase Database · checked Sep 22, 2026
13	Waste Management INC	Indirect evidence	United StatesHQ checked Sep 22, 2026	5,001-10,000	1,311 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
14	Clean Earth	Indirect evidence	King Of Prussia, PA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,275 contacts →
	Indirect evidence “Veolia has completed the acquisition of Clean Earth, bringing together two organizations with a shared commitment to environmental stewardship, safety and operational excellence.” Source: RevenueBase Database · checked Sep 22, 2026
15	Secure	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 22, 2026	1,001-5,000	1,261 contacts →
	Indirect evidence “SECURE is a leading waste management and energy infrastructure business headquartered in Calgary, Alberta.” Source: RevenueBase Database · checked Sep 22, 2026
16	Volvo Eicher Commerical Vehical Limited	Strong evidence	Dhar, IndiaHQ checked Sep 22, 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 22, 2026
17	Urban Utilities	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,064 contacts →
	Indirect 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 22, 2026
18	Inframark	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 22, 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 22, 2026
19	Estre Ambiental	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 22, 2026	5,001-10,000	944 contacts →
	Indirect evidence “Estre is one of the largest environmental services companies in Brazil and Latin America.” Source: RevenueBase Database · checked Sep 22, 2026
20	Aquafin	Indirect evidence	Aartselaar, BelgiumHQ checked Sep 22, 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 22, 2026
21	Crystal Clean	Indirect evidence	Hoffman Estates, IL, United StatesHQ checked Sep 22, 2026	1,001-5,000	899 contacts →
	Indirect evidence “Crystal Clean is a national leader in the environmental services market, providing the smart alternative.” Source: RevenueBase Database · checked Sep 22, 2026
22	Séché Environnement	Indirect evidence	Changé, FranceHQ checked Sep 22, 2026	5,001-10,000	882 contacts →
	Indirect evidence “Séché Environnement is an agile, high performing company that draws its strength from the breadth of its different business lines.” Source: RevenueBase Database · checked Sep 22, 2026
23	OVIVO	Partial evidence	Montreal, QC, CanadaHQ checked Sep 22, 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 22, 2026
24	Gradiant	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 22, 2026	1,001-5,000	813 contacts →
	Indirect evidence “Gradiant is a Different Kind of Water Company.” Source: RevenueBase Database · checked Sep 22, 2026
25	Grupo Corpus Saneamento E Obras	Indirect evidence	Indaiatuba, BrazilHQ checked Sep 22, 2026	5,001-10,000	765 contacts →
	Indirect evidence “Founded in 1987, Corpus Saneamento e Obras was created by Engineer Cineas Feijó Valente.” Source: RevenueBase Database · checked Sep 22, 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: sewage treatment plant operators. 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 sewage treatment plant operators.
Partial evidence: Its own public description names part of sewage treatment plant operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sewage treatment plant operators. 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 5,544 sewage treatment plant operators worldwide

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Sewage treatment plant operators worldwide at a glance

As of Sep 22, 2026

26.9%Verified-email coverage

33.0Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Pune

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

1,837

11-50

2,095

51-200

1,019

201-500

306

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 sewage treatment plant operators, 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 sewage treatment plant operators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sewage treatment plant operators”. 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 sewage treatment plant operators), 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 sewage treatment plant operators, 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, 49,204 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 22, 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.

Sewage treatment plant operators by location

29 lists · largest first

Every Sewage treatment plant operators 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 sewage treatment plant operators, 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 sewage treatment plant operators are there worldwide?

RevenueBase identified 5,544 sewage treatment plant operators 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 sewage treatment plant operators?

The United States leads with 759 companies, followed by India (567) and Italy (383). Every sewage treatment plant operators list by country and city is linked on this page.

Which city has the most sewage treatment plant operators?

Pune leads with 56 headquartered companies, followed by Ahmedabad (43) and Sao Paulo (36).

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 49,204 verified decision-maker contacts tracked across these 5,544 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 22, 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.