Company lists · Data refreshed November 2026

Top 25 Sewage system operators based in the United States

RevenueBase identified 273 company matches for sewage system operators associated with the United States as of November 2026 and tracks 12,344 professional contacts across them, including 5,382 with verified work emails. Houston is the largest hub.

This list covers company matches for sewage system operators associated with the United States, 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.

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
273Companies
12,344Contacts tracked
5,382Verified emails
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The 25 largest sewage system operators based in the United States

Ranked by team size
Top 25 of 273 company matches for sewage system operators based in the United States, 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 matchOakland, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,504 contacts →

Exact match

“East Bay Municipal Utility District is a California public utility that supplies high-quality drinking water, generates renewable energy and provides wastewater treatment and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact 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
3Exact matchHorsham, PA, United StatesHQ recorded Nov 6, 20261,001-5,0001,107 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 6, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchIrving, TX, United StatesHQ recorded Nov 6, 2026501-1,000485 contacts →

Exact match

“Liquid Environmental Solutions - the largest, exclusively non-hazardous US wastewater collection and disposal company, is known for innovation and leadership in protecting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact 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
7Exact matchWaukegan, IL, United StatesHQ recorded Nov 6, 20265,001-10,000252 contacts →

Exact match

“Rely on USABlueBook for everything you need for water and wastewater operations and maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact 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
9Exact matchLenexa, KS, United StatesHQ recorded Nov 6, 2026201-500177 contacts →

Exact match

“S&L delivers long-lasting, reliable and easy-to-operate wastewater pumping and treatment systems for municipal, federal, and industrial-commercial applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchIselin, DE, United StatesHQ recorded Nov 6, 2026201-500165 contacts →

Exact match

“Middlesex Water Company (NASDAQ:MSEX) provides a full range of regulated and non-regulated water, wastewater utility and related services primarily in New Jersey and Delaware.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKearny, CT, United StatesHQ recorded Nov 6, 202651-200152 contacts →

Exact match

“National Water Main Cleaning Co.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 202651-200136 contacts →

Exact match

“Tomorrow Water is an innovative environmental solutions company specializing in both wastewater and organic waste treatment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchConway, SC, United StatesHQ recorded Nov 6, 2026201-500120 contacts →

Exact match

“Water and Sewer Provider”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 202651-200103 contacts →

Exact match

“At World Water Works, we strive to provide industrial and municipal customers with proven and cost-effective wastewater treatment solutions that deliver superior effluent quality.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMontgomery, United StatesHQ recorded Nov 6, 2026201-50088 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchColumbia, MO, United StatesHQ recorded Nov 6, 2026201-50088 contacts →

Exact match

“Headquartered in Columbia, Missouri, Alliance Water Resources is a leading provider of professional operations and maintenance services for community water and wastewater systems…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHillsborough, NJ, United StatesHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“Natural Systems Utilities (NSU) creates value where others see waste.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLittle Rock, AR, United StatesHQ recorded Nov 6, 2026201-50077 contacts →

Exact match

“Little Rock Water Reclamation Authority exists to preserve and replenish the environment by reclaiming our most valuable resource, water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBrooklyn, United StatesHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Approved Oil Company The Leading Energy Provider of NYC Approved is one of the largest independent energy suppliers in the Tri-State area, serving commercial and residential…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDouglasville, GA, United StatesHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“The Douglasville-Douglas County Water and Sewer Authority (“WSA” or “the Authority”) has been delivering quality water and wastewater service to Douglas County residents since…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCypress, TX, United StatesHQ recorded Nov 6, 2026201-50071 contacts →

Exact match

“Excellence in customer service and operations is why Municipal Operations & Consulting, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAnchorage, AK, United StatesHQ recorded Nov 6, 2026201-50068 contacts →

Exact match

“AWWU employs close to 300 men and women who operate its treatment plants and other facilities, while spending $50 million annually to ensure Anchorage’s water and wastewater…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Bernardino, CA, United StatesHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“The City of San Bernardino Municipal Water Department delivers high quality, economically priced water, sewer treatment, and sewer collection services to over residents in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchRosenberg, TX, United StatesHQ recorded Nov 6, 2026201-50065 contacts →

Exact match

“Si Environmental, LLC, is a Texas-based company that leads the way in water and wastewater facility operations and maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCoachella, CA, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“The City of Coachella is a municipal corporation that provides full service governmental services to the residents and businesses of the City of Coachella.”

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

Showing 25 of 273 sewage system operators based in the United States

See the full list, filter by size, metro and specialty, and access 5,382 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Sewage system operators based in the United States at a glance

As of Nov 6, 2026
43.6%Verified-email coverage
45.2Average contacts per company
11-50Median size (employees)
1.1%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
81
51-200
62
201-500
24
501-1,000
8
1,001-5,000
8
5,001-10,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 273 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “sewage 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 5,382 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.

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

How many sewage system operators are there based in the United States?

RevenueBase identified 273 company matches for sewage system operators associated with the United States 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?

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

Which city has the most sewage system operators?

Houston leads with 3 company records, followed by Magnolia (3) and Auburn (2).

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 5,382 professional contacts with verified work emails tracked across these 273 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.