Company lists · Data refreshed September 2026

Top 25 Water system maintenance services based in the United States

Name: Water system maintenance services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 668 companies tracked

RevenueBase identified 668 water system maintenance services headquartered in the United States as of September 2026 and tracks 4,292 professional contacts across them, including 1,415 with verified work emails. Houston is the largest hub.

This list covers water system maintenance services headquartered in the United States, 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.

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

668Companies

4,292Contacts tracked

1,415Verified emails

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The 25 largest water system maintenance services based in the United States

Ranked by team size

Top 25 of 668 water system maintenance services based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to water system maintenance services: 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	Duke's	Partial evidence	Elgin, IL, United StatesHQ checked Sep 22, 2026	201-500	117 contacts →
	Partial evidence “Duke’s is a leading provider of environmental services for maintaining and improving the health of underground infrastructure for wastewater, stormwater, water, and utilities.” Source: RevenueBase Database · checked Sep 22, 2026
2	Advanced Home Services	Indirect evidence	Rigby, ID, United StatesHQ checked Sep 22, 2026	11-50	95 contacts →
	Indirect evidence “At Advanced Home Services our goal is to provide you with Advanced plumbing and heating services that will make your life simple, convenient and comfortable.” Source: RevenueBase Database · checked Sep 22, 2026
3	Citco Water	Partial evidence	Huntington, WV, United StatesHQ checked Sep 22, 2026	51-200	84 contacts →
	Partial evidence “CITCO Water - previously The C.” Source: RevenueBase Database · checked Sep 22, 2026
4	Nor-Cal Pipeline Services	Indirect evidence	Roseville, CA, United StatesHQ checked Sep 22, 2026	51-200	81 contacts →
	Indirect evidence “Nor Cal is a service contractor specializing in hydro excavation, CCTV, CIPP, root control, manhole rehab, pipe jetting, lateral launch, lateral lining, tank cleaning, s.u.e.” Source: RevenueBase Database · checked Sep 22, 2026
5	Alliance Water Resources	Strong evidence	Columbia, MO, United StatesHQ checked Sep 22, 2026	201-500	78 contacts →
	Strong evidence “Headquartered in Columbia, Missouri, Alliance Water Resources is a leading provider of professional operations and maintenance services for community water and wastewater systems…” Source: RevenueBase Database · checked Sep 22, 2026
6	FLEET	Indirect evidence	Harrison, NY, United StatesHQ checked Sep 22, 2026	51-200	72 contacts →
	Indirect evidence “Outstanding Service for Over 50 Years Based in the New York metropolitan area but serving all of NY State, CT, and norther NJ, GA Fleet Associates serves Building Trades…” Source: RevenueBase Database · checked Sep 22, 2026
7	Hill Services	Partial evidence	Memphis, TN, United StatesHQ checked Sep 22, 2026	51-200	66 contacts →
	Partial evidence “Commercial & Industrial Facility Maintenance Services including: Plumbing, Piping, & Camera Technologies Pipe Relining, Manhole Rehabilitation HVAC, Refrigeration, Building…” Source: RevenueBase Database · checked Sep 22, 2026
8	SI Environmental, LLC	Strong evidence	Rosenberg, TX, United StatesHQ checked Sep 22, 2026	201-500	58 contacts →
	Strong evidence “Si Environmental, LLC, is a Texas-based company that leads the way in water and wastewater facility operations and maintenance.” Source: RevenueBase Database · checked Sep 22, 2026
9	Pumpman	Strong evidence	Saddle Brook, NJ, United StatesHQ checked Sep 22, 2026	51-200	51 contacts →
	Strong evidence “PumpMan, a Harrington Company, is a leading provider of pump systems and on-site maintenance and repair services for commercial, industrial, and municipal market customers.” Source: RevenueBase Database · checked Sep 22, 2026
10	Shenandoah	Strong evidence	Pompano Beach, FL, United StatesHQ checked Sep 22, 2026	51-200	50 contacts →
	Strong evidence “For over 30 years we have provided comprehensive pipe inspection, maintenance and repair programs to help our customers extend the life of their existing systems and stretch every…” Source: RevenueBase Database · checked Sep 22, 2026
11	Culy Contracting	Partial evidence	Winchester, United StatesHQ checked Sep 22, 2026	51-200	47 contacts →
	Partial evidence “Culy Contracting focuses on the water and sewer industry, along with total site preparation for municipalities, commercial, industrial, and residential customers.” Source: RevenueBase Database · checked Sep 22, 2026
12	Envirowaste Services Group	Partial evidence	Palmetto Bay, FL, United StatesHQ checked Sep 22, 2026	201-500	46 contacts →
	Partial evidence “Serving Municipalities & Utilities with Cleaning, Inspection, Maintenance, Repair, and Rehabilitation Services Across the Southeast U.S.” Source: RevenueBase Database · checked Sep 22, 2026
13	PSI Process Pumping Services, INC	Partial evidence	Middlesex, NJ, United StatesHQ checked Sep 22, 2026	51-200	44 contacts →
	Partial evidence “PSI Process is a stocking distributor and service facility for the world’s leading manufacturers of equipment used in the treatment and transfer of water, wastewater and other…” Source: RevenueBase Database · checked Sep 22, 2026
14	Gordon Water Systems	Strong evidence	Kalamazoo, MI, United StatesHQ checked Sep 22, 2026	11-50	44 contacts →
	Strong evidence “Gordon Water Systems is frequently recognized as the top water treatment company in West Michigan.” Source: RevenueBase Database · checked Sep 22, 2026
15	Advanced Rehabilitation Technology	Indirect evidence	Bryan, OH, United StatesHQ checked Sep 22, 2026	11-50	42 contacts →
	Indirect evidence “Advanced Rehabilitation Technology was founded to address the needs of municipal and industrial customers requiring additional repair, rehabilitation and modification on sewer and…” Source: RevenueBase Database · checked Sep 22, 2026
16	Mid-Atlantic Service 360	Indirect evidence	Millstone Township, NJ, United StatesHQ checked Sep 22, 2026	51-200	39 contacts →
	Indirect evidence “We at Mid-Atlantic Service 360 pride ourselves on quality, reliability and competitive pricing.” Source: RevenueBase Database · checked Sep 22, 2026
17	Jaytech Water Solutions	Partial evidence	Fridley, MN, United StatesHQ checked Sep 22, 2026	11-50	38 contacts →
	Partial evidence “For over 45 years Jaytech has been delivering superior water treatment services.” Source: RevenueBase Database · checked Sep 22, 2026
18	Mobile Dredging & Video Pipe, INC	Strong evidence	Beltsville, MD, United StatesHQ checked Sep 22, 2026	51-200	37 contacts →
	Strong evidence “Mobile Dredging & Video Pipe offers a full line of hydraulic dredging and dewatering, sewer system repair and maintenance, water line inspection and leak detection and industrial…” Source: RevenueBase Database · checked Sep 22, 2026
19	Hydra-Stop LLC	Partial evidence	Burr Ridge, IL, United StatesHQ checked Sep 22, 2026	11-50	35 contacts →
	Partial evidence “Hydra-Stop helps the world sustainably control water, life’s most essential resource.” Source: RevenueBase Database · checked Sep 22, 2026
20	Rayne Water	Strong evidence	San Diego, CA, United StatesHQ checked Sep 22, 2026	51-200	35 contacts →
	Strong evidence “Welcome to Rayne Water, your one-stop solution for residential and commercial water treatment systems since 1928.” Source: RevenueBase Database · checked Sep 22, 2026
21	C&l Water Solutions	Partial evidence	Littleton, CO, United StatesHQ checked Sep 22, 2026	51-200	35 contacts →
	Partial evidence “Since 1979, C&L Water Solutions has been providing open cut services to special districts in the Denver Metro area.” Source: RevenueBase Database · checked Sep 22, 2026
22	National Plant Services, INC	Partial evidence	Long Beach, CA, United StatesHQ checked Sep 22, 2026	11-50	33 contacts →
	Partial evidence “National Plant Services specializes in a full array of environmental maintenance and repair services, and has been serving the needs of the Western United States since 1981.” Source: RevenueBase Database · checked Sep 22, 2026
23	IWC Innovations	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 22, 2026	11-50	32 contacts →
	Strong evidence “At IWC Innovations, we provide comprehensive water solutions to ensure safety, compliance, and system efficiency.” Source: RevenueBase Database · checked Sep 22, 2026
24	Neptune Plumbing & Heating CO	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 22, 2026	51-200	32 contacts →
	Indirect evidence “Neptune Plumbing: The home of 1-800-PLUMBING Service Division Neptune Plumbing & Heating Company is proud of its tradition of excellence.” Source: RevenueBase Database · checked Sep 22, 2026
25	Municipal Maintenance CO	Strong evidence	Cinnaminson Township, NJ, United StatesHQ checked Sep 22, 2026	51-200	29 contacts →
	Strong evidence “Municipal Maintenance Company is the region's leader in service, sales, and installation of water and wastewater treatment equipment.” 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: water system maintenance services. 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 water system maintenance services.
Partial evidence: Its own public description names part of water system maintenance services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name water system maintenance services. 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 668 water system maintenance services based in the United States

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Water system maintenance services based in the United States at a glance

As of Sep 22, 2026

33.0%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Houston

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

332

11-50

254

51-200

201-500

501-1,000

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 668 companies.

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 water system maintenance services, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “water system maintenance services”. 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 water system maintenance services), 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 water system maintenance services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 1,415 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.

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 water system maintenance services, 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 water system maintenance services are there based in the United States?

RevenueBase identified 668 water system maintenance services headquartered in the United States 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?

Duke's, headquartered in Elgin, tops this list with the largest team on record.

Which city has the most water system maintenance services?

Houston leads with 9 headquartered companies, followed by New York (7) and Mesa (6).

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 1,415 verified decision-maker contacts tracked across these 668 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.