Company lists · Data refreshed September 2026

Top 25 Commercial water system integrators based in the United States

Name: Commercial water system integrators based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,708 companies tracked

RevenueBase identified 1,708 commercial water system integrators headquartered in the United States as of September 2026 and tracks 35,907 professional contacts across them, including 15,304 with verified work emails. Houston is the largest hub.

This list covers commercial water system integrators 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 19, 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 19, 2026 86% judged on-target in blind review

1,708Companies

35,907Contacts tracked

15,304Verified emails

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The 25 largest commercial water system integrators based in the United States

Ranked by team size

Top 25 of 1,708 commercial water system integrators based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to commercial water system integrators: 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	Watts Water Technologies	Strong evidence	North Andover, MA, United StatesHQ checked Sep 19, 2026	5,001-10,000	2,503 contacts →
	Strong evidence “We are a global leader of quality water solutions for residential, industrial, municipal, and commercial settings.” Source: RevenueBase Database · checked Sep 19, 2026
2	Acco Engineered Systems	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 19, 2026	5,001-10,000	2,415 contacts →
	Partial evidence “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Source: RevenueBase Database · checked Sep 19, 2026
3	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,077 contacts →
	Indirect evidence “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Source: RevenueBase Database · checked Sep 19, 2026
4	Cmta, INC	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 19, 2026	501-1,000	936 contacts →
	Indirect evidence “CMTA is part of Legence, a Nasdaq Listed company.” Source: RevenueBase Database · checked Sep 19, 2026
5	Chem-Aqua, INC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 19, 2026	10001+	864 contacts →
	Indirect evidence “Chem-Aqua is a unique combination of knowledge, experience and stability.” Source: RevenueBase Database · checked Sep 19, 2026
6	AHERN	Indirect evidence	Fond Du Lac, WI, United StatesHQ checked Sep 19, 2026	1,001-5,000	849 contacts →
	Indirect evidence “Ahern is a mechanical and fire protection contractor specializing in HVAC, Plumbing, Building Controls, Sprinkler, Extinguisher & Alarm and Fabrication for construction and…” Source: RevenueBase Database · checked Sep 19, 2026
7	F.E. Moran Group Of Companies	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	564 contacts →
	Indirect evidence “At F.E.” Source: RevenueBase Database · checked Sep 19, 2026
8	John W. Danforth Company	Indirect evidence	Tonawanda, NY, United StatesHQ checked Sep 19, 2026	501-1,000	415 contacts →
	Indirect evidence “We are powered by the best people in the industry.” Source: RevenueBase Database · checked Sep 19, 2026
9	United Mechanical	Strong evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	201-500	346 contacts →
	Strong evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 19, 2026
10	Tesco Controls	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 19, 2026	201-500	313 contacts →
	Strong evidence “Tesco Controls, a UFT Company, is a full service systems integrator and original equipment manufacturer specializing in the WATER/WASTEWATER, TRANSPORTATION and ELECTRIC UTILITY…” Source: RevenueBase Database · checked Sep 19, 2026
11	Etna Supply	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 19, 2026	501-1,000	303 contacts →
	Partial evidence “Etna Supply is a family of companies committed to providing the essential products, expertise, and support that keep water moving and businesses running.” Source: RevenueBase Database · checked Sep 19, 2026
12	John E. Green Company	Indirect evidence	Highland Park, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	301 contacts →
	Indirect evidence “In 1909, John E.” Source: RevenueBase Database · checked Sep 19, 2026
13	SVM	Partial evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	501-1,000	293 contacts →
	Partial evidence “SVM is a full service mechanical contractor, specializing in design-build commercial HVAC, plumbing, and service / maintenance, including 24-hour emergency services.” Source: RevenueBase Database · checked Sep 19, 2026
14	Batchelor & Kimball, INC	Indirect evidence	Conyers, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	270 contacts →
	Indirect evidence “Batchelor & Kimball is a mechanical engineering and plumbing contractor specializing in projects that call for advanced expertise and problem-solving.” Source: RevenueBase Database · checked Sep 19, 2026
15	Culligan By Waterco	Strong evidence	Lombard, IL, United StatesHQ checked Sep 19, 2026	501-1,000	265 contacts →
	Strong evidence “Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.” Source: RevenueBase Database · checked Sep 19, 2026
16	Shapiro & Duncan, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 19, 2026	201-500	225 contacts →
	Indirect evidence “Shapiro and Duncan is a full service Plumbing and HVAC construction company based in Rockville, Maryland since 1976.” Source: RevenueBase Database · checked Sep 19, 2026
17	Holaday-Parks, INC	Indirect evidence	Tukwila, WA, United StatesHQ checked Sep 19, 2026	201-500	218 contacts →
	Indirect evidence “As one of the largest full service mechanical contractors headquartered in the Pacific Northwest, Holaday Parks has grown well beyond Seattle.” Source: RevenueBase Database · checked Sep 19, 2026
18	Pueblo Mechanical & Controls	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 19, 2026	501-1,000	214 contacts →
	Indirect evidence “Pueblo was founded in Arizona to achieve sustained and profitable growth by providing services that consistently satisfy the needs and expectations of its customers.” Source: RevenueBase Database · checked Sep 19, 2026
19	Tweet Garot Mechanical, INC	Indirect evidence	De Pere, WI, United StatesHQ checked Sep 19, 2026	501-1,000	207 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
20	MLN Company	Partial evidence	Stafford, TX, United StatesHQ checked Sep 19, 2026	501-1,000	203 contacts →
	Partial evidence “MLN has provided the best systems and services in mechanical contracting for nearly three decades.” Source: RevenueBase Database · checked Sep 19, 2026
21	Total Mechanical	Partial evidence	Pewaukee, WI, United StatesHQ checked Sep 19, 2026	201-500	186 contacts →
	Partial evidence “TOTAL Mechanical is a single-source mechanical contractor, specializing in the design, engineering, manufacturing, installation, maintenance and repair of commercial, industrial…” Source: RevenueBase Database · checked Sep 19, 2026
22	L&s Mechanical	Indirect evidence	Richardson, TX, United StatesHQ checked Sep 19, 2026	501-1,000	186 contacts →
	Indirect evidence “L&S Mechanical began as a Dallas-based contractor in 1985 and has grown over the years to have six locations out of Dallas, Fort Worth, Houston, San Antonio, and Austin.” Source: RevenueBase Database · checked Sep 19, 2026
23	Maxair Mechanical	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 19, 2026	201-500	183 contacts →
	Indirect evidence “MAXAIR Mechanical, founded in 1988, is a people first company.” Source: RevenueBase Database · checked Sep 19, 2026
24	Comprehensive Energy Services, INC	Indirect evidence	Longwood, FL, United StatesHQ checked Sep 19, 2026	201-500	181 contacts →
	Indirect evidence “Founded in 1992, Comprehensive Energy Services, Inc.(CES) is a family-owned and operated, award-winning mechanical and plumbing contractor proudly serving the entire state of…” Source: RevenueBase Database · checked Sep 19, 2026
25	Comfort Systems USA Southeast	Strong evidence	Pensacola, FL, United StatesHQ checked Sep 19, 2026	201-500	180 contacts →
	Strong evidence “Comfort Systems USA Southeast is one of the largest commercial mechanical an plumbing contractors and service providers executing 150M+ in revenue annually across the southeast.” Source: RevenueBase Database · checked Sep 19, 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: commercial water system integrators. 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 commercial water system integrators.
Partial evidence: Its own public description names part of commercial water system integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial water system integrators. 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 1,708 commercial water system integrators based in the United States

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Commercial water system integrators based in the United States at a glance

As of Sep 19, 2026

42.6%Verified-email coverage

21.0Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

628

11-50

655

51-200

310

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,708 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 commercial water system integrators, 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 “commercial water system integrators”. 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 commercial water system integrators), 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 commercial water system integrators, 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, 15,304 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 19, 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.

Commercial water system integrators by metro

Commercial water system integrators in Houston25

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 commercial water system integrators, 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 commercial water system integrators are there based in the United States?

RevenueBase identified 1,708 commercial water system integrators 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?

Watts Water Technologies, headquartered in North Andover, tops this list with the largest team on record.

Which city has the most commercial water system integrators?

Houston leads with 25 headquartered companies, followed by Dallas (13) and Jacksonville (13).

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 15,304 verified decision-maker contacts tracked across these 1,708 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 19, 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.