Company lists · Data refreshed November 2026

Top 25 Sewer system operators worldwide

RevenueBase identified 947 company matches for sewer system operators worldwide as of November 2026 and tracks 40,613 professional contacts across them, including 12,683 with verified work emails. The United States is the largest market and Xian the largest hub.

This list covers company matches for sewer system operators 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 6, 2026. Country and city lists for sewer system operators 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 6, 2026 How this list was built
947Companies
40,613Contacts tracked
12,683Verified emails
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The 25 largest sewer system operators worldwide

Ranked by team size
Top 25 of 947 company matches for sewer system operators worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBrazilHQ recorded Nov 6, 20265,001-10,0003,589 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 6, 2026 · View company records in RevenueBase
2Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 20261,001-5,0002,659 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 6, 2026 · View company records in RevenueBase
3Exact matchCardiff, United KingdomHQ recorded Nov 6, 20261,001-5,0001,970 contacts →

Exact match

“Bath-times, half-times, party-times, meeting-times, and cooking-times.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchAmsterdam, NetherlandsHQ recorded Nov 6, 20261,001-5,0001,528 contacts →

Exact match

“Water is overal om ons heen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLaurel, MD, United StatesHQ recorded Nov 6, 20261,001-5,0001,263 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 6, 2026 · View company records in RevenueBase
6Exact matchFortitude Valley, AustraliaHQ recorded Nov 6, 20261,001-5,0001,112 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 6, 2026 · View company records in RevenueBase
7Exact matchParis, FranceHQ recorded Nov 6, 20261,001-5,0001,054 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 6, 2026 · View company records in RevenueBase
8Exact matchConcepcion, ChileHQ recorded Nov 6, 20261,001-5,0001,007 contacts →

Exact match

“Essbio es la segunda empresa sanitaria más importante de Chile.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMelbourne, AustraliaHQ recorded Nov 6, 2026501-1,000903 contacts →

Exact match

“We service 2 million people and businesses across a area, from Wallan in the north to Warburton in the east.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMaroochydore, AustraliaHQ recorded Nov 6, 2026501-1,000761 contacts →

Exact match

“Unitywater provides essential water supply and sewage treatment services to residents and businesses in the Moreton Bay, Sunshine Coast and Noosa regions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAthens, GreeceHQ recorded Nov 6, 20261,001-5,000564 contacts →

Exact match

“Athens Water Supply & Sewerage Company S.A.(EYDAP) is the largest Greek company in the water supply, sewerage and waste water treatment sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCleveland, OH, United StatesHQ recorded Nov 6, 2026501-1,000488 contacts →

Exact match

“The Northeast Ohio Regional Sewer District protects public health and the environment by leading effective wastewater and stormwater management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchUnited StatesHQ recorded Nov 6, 20261,001-5,000485 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchGothenburg, SwedenHQ recorded Nov 6, 2026501-1,000405 contacts →

Exact match

“Rent vatten i kranen, avlopp och sophämtning måste fungera dygnet runt, året runt.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAntwerp, BelgiumHQ recorded Nov 6, 2026501-1,000380 contacts →

Exact match

“Pidpa, als integrale waterpartner, biedt een ruime waaier van producten en diensten aan: Drinkwatervoorziening In 64 gemeenten van de provincie Antwerpen staat Pidpa garant voor…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchVenice, ItalyHQ recorded Nov 6, 20261,001-5,000323 contacts →

Exact match

“Veritas è la società per azioni a capitale interamente pubblico che fornisce servizi ambientali ai 51 Comuni soci (la Città metropolitana di Venezia e parte della provincia di…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchCariri Ao Litoral, BrazilHQ recorded Nov 6, 2026501-1,000314 contacts →

Exact match

“A Ambiental Ceará é a de esgoto da Cagece, a maior do país no setor de saneamento básico, e chega para somar na vida do cearense, ficando responsável pela ampliação, operação e…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchPraha 1, Czech RepublicHQ recorded Nov 6, 20261,001-5,000300 contacts →

Exact match

“Akcionáři společnosti: Hlavní činnosti: Provozování vodovodů a kanalizací Úprava vod a čistění odpadních vod Poradenství ve vodohospodářské činnosti Investorsko-inženýrská činnost…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKissimmee, FL, United StatesHQ recorded Nov 6, 2026501-1,000283 contacts →

Exact match

“Toho Water Authority was established in 2003 by a special act of the Florida legislature and provides a full range of water, wastewater and reclaimed water services to its…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchUppsala, SwedenHQ recorded Nov 6, 2026201-500261 contacts →

Exact match

“Uppsala Vatten och Avfall AB är ett kommunalt bolag med cirka 370 medarbetare.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchPittsburgh, United StatesHQ recorded Nov 6, 2026201-500248 contacts →

Exact match

“ALCOSAN is one of the Pittsburgh region’s premiere environmental and public health organizations, treating wastewater for 83 Allegheny County communities, including the City of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchÅrhus, DenmarkHQ recorded Nov 6, 2026201-500207 contacts →

Exact match

“Aarhus Vand is a Danish public limited company owned by Aarhus Municipality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHelsingborg, SwedenHQ recorded Nov 6, 202651-200202 contacts →

Exact match

“Rent vatten.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWarrnambool, AustraliaHQ recorded Nov 6, 2026201-500198 contacts →

Exact match

“A healthy region enabled by water Our vision is for a region where people can live well, communities are supported, and economies thrive, with water playing a vital role in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchÅkersberga, SwedenHQ recorded Nov 6, 2026201-500180 contacts →

Exact match

“Water and Waste company”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 947 sewer system operators worldwide

See the full list, filter by size, metro and specialty, and access 12,683 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sewer system operators worldwide at a glance

As of Nov 6, 2026
31.2%Verified-email coverage
42.9Average contacts per company
11-50Median size (employees)
0.5%Largest-city concentration · Xian
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
315
11-50
255
51-200
176
201-500
88
501-1,000
39
1,001-5,000
35
5,001-10,000
4
10001+
3

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 sewer system operators are linked below.
What qualifies
Company records worldwide whose business descriptions match “sewer system operators” 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 12,683 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 6, 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.

Sewer system operators by location

6 lists · largest first

Every Sewer system operators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “sewer system operators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many sewer system operators are there worldwide?

RevenueBase identified 947 company matches for sewer system operators 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?

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

Which country has the most sewer system operators?

The United States leads with 220 companies, followed by Germany (104) and Italy (80). Every sewer system operators list by country and city is linked on this page.

Which city has the most sewer system operators?

Xian leads with 5 company records, followed by Atibaia (3) and Caxias Do Sul (3).

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 12,683 professional contacts with verified work emails tracked across these 947 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 6, 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.