Company lists · Data refreshed November 2026

Top 25 Water & wastewater contract operating services worldwide

Name: Water & wastewater contract operating services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 3, 2026 6,288 companies tracked

RevenueBase identified 6,288 company matches for water & wastewater contract operating services worldwide as of November 2026 and tracks 229,207 professional contacts across them, including 63,310 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers company matches for water & wastewater contract operating services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 3, 2026. Country and city lists for water & wastewater contract operating services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 3, 2026 How this list was built

6,288Companies

229,207Contacts tracked

63,310Verified emails

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The 25 largest water & wastewater contract operating services worldwide

Ranked by team size

Top 25 of 6,288 company matches for water & wastewater contract operating services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SUEZ	Exact match	Paris, FranceHQ recorded Nov 3, 2026	10001+	23,115 contacts →
	Exact match “We provide essential services in the water and waste sectors to preserve resources and improve quality of life wherever we operate.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2	Sabesp	Exact match	Sao Paulo, BrazilHQ recorded Nov 3, 2026	10001+	11,763 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
3	Thames Water	Exact match	Reading, United KingdomHQ recorded Nov 3, 2026	1,001-5,000	6,329 contacts →
	Exact match “Thames Water is the UK’s biggest water and wastewater services provider, providing 2.7 billion litres of drinking water and safely removing 4.6 billion litres of wastewater every…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4	Severn Trent	Exact match	Coventry, United KingdomHQ recorded Nov 3, 2026	5,001-10,000	6,089 contacts →
	Exact match “Water is wonderful.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
5	NWC	Exact match	Riyadh, Saudi ArabiaHQ recorded Nov 3, 2026	10001+	5,645 contacts →
	Exact match “The National Water Company (a Saudi joint stock company, wholly owned by the state represented by the Public Investment Fund) was established in 2008, providing water and…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6	ION Exchange India LTD	Exact match	Mumbai, IndiaHQ recorded Nov 3, 2026	1,001-5,000	4,010 contacts →
	Exact match “At Ion Exchange India, we bring you total environment solutions - water treatment, liquid waste treatment & recycle, air pollution control, solid & hazardous waste management and…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7	Sydney Water	Exact match	Parramatta, AustraliaHQ recorded Nov 3, 2026	1,001-5,000	3,922 contacts →
	Exact match “We deliver essential and sustainable water services for the benefit of the community.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
8	BRK Ambiental	Exact match	BrazilHQ recorded Nov 3, 2026	5,001-10,000	3,589 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
9	CEDAE	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 3, 2026	1,001-5,000	2,659 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10	Veolia Australia & NEW Zealand	Exact match	Pyrmont, AustraliaHQ recorded Nov 3, 2026	5,001-10,000	2,639 contacts →
	Exact match “Every day, our team members across Australia and New Zealand are solving one of the world's most pressing challenges: how to protect our planet's precious resources.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11	Uisce Éireann Irish Water	Exact match	Dublin, IrelandHQ recorded Nov 3, 2026	1,001-5,000	2,046 contacts →
	Exact match “We are Uisce Éireann.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12	Manila Water	Exact match	Quezon City, PhilippinesHQ recorded Nov 3, 2026	1,001-5,000	1,679 contacts →
	Exact match “Manila Water Company, Inc.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13	Wessex Water	Exact match	Bath, United KingdomHQ recorded Nov 3, 2026	1,001-5,000	1,659 contacts →
	Exact match “Wessex Water is the regional water and sewage treatment business serving an area of the south west of England, including Dorset, Somerset, Bristol, most of Wiltshire and parts of…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14	SEAAL	Exact match	Alger, AlgeriaHQ recorded Nov 3, 2026	5,001-10,000	1,656 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15	Aqualia	Exact match	Madrid, SpainHQ recorded Nov 3, 2026	5,001-10,000	1,606 contacts →
	Exact match “Aqualia es la cuarta empresa de gestión del agua de Europa y la novena del Mundo por población servida, según el último ranking de Global Water Intelligence (diciembre de 2024).” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16	Grupo Águas DO Brasil	Exact match	Niterói, BrazilHQ recorded Nov 3, 2026	1,001-5,000	1,481 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17	Companhia DE Água E Esgoto DO Ceará - Cagece	Exact match	Fortaleza, BrazilHQ recorded Nov 3, 2026	1,001-5,000	1,435 contacts →
	Exact match “A Companhia de Água e Esgoto do Ceará (Cagece), fundada em 1971, é uma empresa de economia mista com capital aberto que tem por finalidade a prestação dos serviços de…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
18	National Water & Sewerage Corporation Nwsc	Exact match	Kampala, UgandaHQ recorded Nov 3, 2026	1,001-5,000	1,428 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19	Wssc Water	Exact match	Laurel, MD, United StatesHQ recorded Nov 3, 2026	1,001-5,000	1,263 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20	Volvo Eicher Commerical Vehical Limited	Exact match	Dhar, IndiaHQ recorded Nov 3, 2026	n/a	1,235 contacts →
	Exact match “Volvo Eicher Commerical Vehical Limited Service Provider of waste water recycling systems, drinking water plant & industrial water treatment in Indore, Madhya Pradesh.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21	AIR Selangor	Exact match	Kuala Lumpur, MalaysiaHQ recorded Nov 3, 2026	5,001-10,000	1,193 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
22	Urban Utilities	Exact match	Fortitude Valley, AustraliaHQ recorded Nov 3, 2026	1,001-5,000	1,112 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
23	Inframark	Exact match	Horsham, PA, United StatesHQ recorded Nov 3, 2026	1,001-5,000	1,107 contacts →
	Exact match “As an Azuria owned company, Inframark is a widely recognized leader in Water Infrastructure Operations and Infrastructure Management Services.” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
24	SIAAP	Exact match	Paris, FranceHQ recorded Nov 3, 2026	1,001-5,000	1,054 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
25	Companhia Catarinense DE Águas E Saneamento - Casan	Exact match	Florianópolis, BrazilHQ recorded Nov 3, 2026	1,001-5,000	1,007 contacts →
	Exact match “A Companhia Catarinense de Águas e Saneamento (CASAN) é uma empresa pública de economia mista e de capital aberto, que atua como concessionária do setor de saneamento por meio de…” Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “water & wastewater contract operating services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 6,288 water & wastewater contract operating services worldwide

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Water & wastewater contract operating services worldwide at a glance

As of Nov 3, 2026

27.6%Verified-email coverage

36.5Average contacts per company

11-50Median size (employees)

0.8%Largest-city concentration · Pune

Nov 3, 2026Page data refreshed

Companies by employee count

1-10

2,192

11-50

2,206

51-200

1,088

201-500

375

501-1,000

139

1,001-5,000

125

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for water & wastewater contract operating services are linked below.
What qualifies: Company records worldwide whose business descriptions match “water & wastewater contract operating services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 63,310 professional contacts with verified work emails across the full matched dataset. 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 November 3, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Water & wastewater contract operating services by location

36 lists · largest first

Every Water & wastewater contract operating services 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “water & wastewater contract operating services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water & wastewater contract operating services are there worldwide?

RevenueBase identified 6,288 company matches for water & wastewater contract operating services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SUEZ tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most water & wastewater contract operating services?

The United States leads with 1,028 companies, followed by India (569) and the United Kingdom (326). Every water & wastewater contract operating services list by country and city is linked on this page.

Which city has the most water & wastewater contract operating services?

Pune leads with 50 company records, followed by Chennai (47) and Ahmedabad (41).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 63,310 professional contacts with verified work emails tracked across these 6,288 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 3, 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 SmartSearch, 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.