Company lists · Data refreshed October 2026

Top 25 Commercial water system contractors based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 10, 2026 1,577 companies tracked

RevenueBase identified 1,577 company matches for commercial water system contractors associated with the United States as of October 2026 and tracks 17,650 professional contacts across them, including 6,200 with verified work emails. Houston is the largest hub.

This list covers company matches for commercial water system contractors 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 October 10, 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 Oct 10, 2026 How this list was built

1,577Companies

17,650Contacts tracked

6,200Verified emails

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

Ranked by team size

Top 25 of 1,577 company matches for commercial water system contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 10, 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	John W. Danforth Company	Exact match	Tonawanda, NY, United StatesHQ recorded Oct 10, 2026	501-1,000	410 contacts →
	Exact match “We are powered by the best people in the industry.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Oct 10, 2026	201-500	349 contacts →
	Exact match “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3	SVM	Exact match	San Jose, CA, United StatesHQ recorded Oct 10, 2026	501-1,000	310 contacts →
	Exact match “SVM is a full service mechanical contractor, specializing in design-build commercial HVAC, plumbing, and service / maintenance, including 24-hour emergency services.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4	Culligan By Waterco	Exact match	Lombard, IL, United StatesHQ recorded Oct 10, 2026	501-1,000	277 contacts →
	Exact match “Culligan has over 80 years of experience in the design and distribution of water treatment systems for residential, commercial and industrial applications.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5	Holaday-Parks, INC	Exact match	Tukwila, WA, United StatesHQ recorded Oct 10, 2026	201-500	240 contacts →
	Exact match “As one of the largest full service mechanical contractors headquartered in the Pacific Northwest, Holaday Parks has grown well beyond Seattle.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6	Shapiro & Duncan, INC	Exact match	Rockville, MD, United StatesHQ recorded Oct 10, 2026	201-500	239 contacts →
	Exact match “Shapiro and Duncan is a full service Plumbing and HVAC construction company based in Rockville, Maryland since 1976.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
7	Tweet Garot Mechanical, INC	Exact match	De Pere, WI, United StatesHQ recorded Oct 10, 2026	501-1,000	211 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8	Maxair Mechanical	Exact match	Marietta, GA, United StatesHQ recorded Oct 10, 2026	201-500	202 contacts →
	Exact match “MAXAIR Mechanical, founded in 1988, is a people first company.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9	Comprehensive Energy Services, INC	Exact match	Longwood, FL, United StatesHQ recorded Oct 10, 2026	201-500	185 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10	Comfort Systems USA Southeast	Exact match	Pensacola, FL, United StatesHQ recorded Oct 10, 2026	201-500	183 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11	AC Corporation	Exact match	Greensboro, NC, United StatesHQ recorded Oct 10, 2026	201-500	171 contacts →
	Exact match “Since 1935, AC Corporation has provided quality systems for the industrial and commercial markets.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12	WAY Mechanical	Exact match	Irving, TX, United StatesHQ recorded Oct 10, 2026	501-1,000	149 contacts →
	Exact match “Way Mechanical is a mechanical contractor located in Austin, Dallas, Fort Worth, Houston, Nashville, and San Antonio.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13	Rice Lake Construction Group	Exact match	Deerwood, MN, United StatesHQ recorded Oct 10, 2026	201-500	124 contacts →
	Exact match “At Rice Lake Construction Group, we know water.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14	Iron Mechanical	Exact match	Sacramento, CA, United StatesHQ recorded Oct 10, 2026	201-500	119 contacts →
	Exact match “We specialize in providing HVAC, plumbing, and piping design and installation services across the state of California.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15	Speer Mechanical	Exact match	Columbus, OH, United StatesHQ recorded Oct 10, 2026	201-500	118 contacts →
	Exact match “Serving central Ohio Since 1927, Speer Mechanical offers design, fabrication, installation and maintenance services for: HVAC systems, plumbing, process piping, sheet metal, and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16	Great Lakes Plumbing Heating Fire Protection Company	Exact match	Westmont, IL, United StatesHQ recorded Oct 10, 2026	201-500	110 contacts →
	Exact match “Founded in 1946, Great Lakes Plumbing and Heating Company is a Chicago-based full service mechanical contracting firm that specializes in complex plumbing, mechanical piping and…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17	DRF Water Heating Solutions	Exact match	Plainfield, IL, United StatesHQ recorded Oct 10, 2026	51-200	107 contacts →
	Exact match “DRF Water Heating Solutions mission is to help as many people as we can.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18	Oasis International	Exact match	Columbus, OH, United StatesHQ recorded Oct 10, 2026	201-500	103 contacts →
	Exact match “OASIS International is a global leader in the design, manufacture and distribution of clean drinking water systems.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19	Pureflow, INC	Exact match	Graham, NC, United StatesHQ recorded Oct 10, 2026	51-200	96 contacts →
	Exact match “Why Pureflow?” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20	Advanced Home Services	Exact match	Rigby, ID, United StatesHQ recorded Oct 10, 2026	11-50	93 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21	JIM Myers & Sons, Inc. JMS	Exact match	Charlotte, NC, United StatesHQ recorded Oct 10, 2026	51-200	91 contacts →
	Exact match “Founded in 1962, Jim Myers & Sons, Inc.(JMS) is a high-quality equipment manufacturer leading the way in the water & wastewater industry.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22	Maguire	Exact match	Sioux Falls, SD, United StatesHQ recorded Oct 10, 2026	51-200	90 contacts →
	Exact match “Maguire offers a full spectrum of water storage tank services including new and pre-owned tanks, relocation of existing tanks, repairs and replacement parts, lead abatement…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23	Marelich Mechanical Co., INC	Exact match	Hayward, CA, United StatesHQ recorded Oct 10, 2026	201-500	88 contacts →
	Exact match “A Leading Bay Area Mechanical Contractor Providing Complete Plumbing, Piping, & HVAC Services Including Design Build Marelich Mechanical, An EMCOR Company, has been one of the Bay…” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24	HYDRO	Exact match	Durham, NC, United StatesHQ recorded Oct 10, 2026	51-200	86 contacts →
	Exact match “We Design, Build, Install, Start Up, and Validate High-Purity Water Systems-Improving Lives Through Water Purification.” Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25	JRC Mechanical Plumbing Hvac Refrigeration	Exact match	Chesapeake, VA, United StatesHQ recorded Oct 10, 2026	201-500	84 contacts →
	Exact match “JRC Mechanical specializes in mechanical and plumbing systems for large commercial buildings, hospitals, hotels, schools, and government facilities.” Recorded in the RevenueBase company graph · Oct 10, 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 “commercial water system contractors”. 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 1,577 commercial water system contractors based in the United States

See the full list, filter by size, metro and specialty, and access 6,200 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Oct 10, 2026

35.1%Verified-email coverage

11.2Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Houston

Oct 10, 2026Page data refreshed

Companies by employee count

1-10

692

11-50

583

51-200

232

201-500

501-1,000

5,001-10,000

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 1,577 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 “commercial water system contractors” 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 6,200 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 October 10, 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.

Commercial water system contractors by metro

Commercial water system contractors in Houston30

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

How many commercial water system contractors are there based in the United States?

RevenueBase identified 1,577 company matches for commercial water system contractors associated with the United States as of October 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?

John W. Danforth Company tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most commercial water system contractors?

Houston leads with 30 company records, followed by Miami (14) and San Antonio (14).

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 6,200 professional contacts with verified work emails tracked across these 1,577 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 October 10, 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.