Company lists · Data refreshed October 2026

Top 25 Plumbing and water treatment contractors based in the United States

Name: Plumbing and water treatment 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 22, 2026 6,486 companies tracked

RevenueBase identified 6,486 company matches for plumbing and water treatment contractors associated with the United States as of October 2026 and tracks 48,702 professional contacts across them, including 13,260 with verified work emails. Houston is the largest hub.

This list covers company matches for plumbing and water treatment 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 22, 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 22, 2026 How this list was built

6,486Companies

48,702Contacts tracked

13,260Verified emails

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The 25 largest plumbing and water treatment contractors based in the United States

Ranked by team size

Top 25 of 6,486 company matches for plumbing and water treatment contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 22, 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	Murphy Company	Exact match	St. Louis, MO, United StatesHQ recorded Oct 22, 2026	1,001-5,000	587 contacts →
	Exact match “Per Colorado State Law Our CO Plumbing Contractor License Our Master Plumbing License is MP.03001288.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
2	Horizon Services, LLC	Exact match	Wilmington, DE, United StatesHQ recorded Oct 22, 2026	501-1,000	458 contacts →
	Exact match “Horizon Services is the premier heating, air conditioning, plumbing, drain cleaning and sewer services company in Delaware (New Castle County & Kent County), Pennsylvania…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
3	John W. Danforth Company	Exact match	Tonawanda, NY, United StatesHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
4	Hiller Plumbing, Heating, Cooling & Electrical	Exact match	Nashville, TN, United StatesHQ recorded Oct 22, 2026	501-1,000	370 contacts →
	Exact match “Hiller provides residential and commercial service and repair throughout Tennessee, Southern Kentucky, Northern Alabama, Southeastern Arkansas, Northeastern Mississippi, Northern…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
5	United Mechanical	Exact match	San Jose, CA, United StatesHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
6	Etna Supply	Exact match	Grand Rapids, MI, United StatesHQ recorded Oct 22, 2026	501-1,000	314 contacts →
	Exact match “Etna Supply is a family of companies committed to providing the essential products, expertise, and support that keep water moving and businesses running.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
7	ABC Plumbing, Sewer, Heating, Cooling & Electric	Exact match	Arlington Heights, IL, United StatesHQ recorded Oct 22, 2026	201-500	281 contacts →
	Exact match “ABC Plumbing, Sewer, Heating, Cooling, and Electric has been a trusted family-owned and operated home service provider for over 70 years.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
8	Culligan By Waterco	Exact match	Lombard, IL, United StatesHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
9	Plumber	Exact match	Three Lakes, WI, United StatesHQ recorded Oct 22, 2026	n/a	272 contacts →
	Exact match “Plumber™ exclusively serves residential and commercial plumbing contractors and franchisees providing everything from repair work and pipe rehabilitation to water conditioning and…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
10	Morris-Jenkins	Exact match	Charlotte, NC, United StatesHQ recorded Oct 22, 2026	501-1,000	248 contacts →
	Exact match “Morris-Jenkins is like family!” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
11	Shapiro & Duncan, INC	Exact match	Rockville, MD, United StatesHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
12	Aqua-Aerobic Systems, INC	Exact match	Loves Park, IL, United StatesHQ recorded Oct 22, 2026	51-200	224 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
13	F.H. Furr Plumbing, Heating, AIR Conditioning, & Electrical	Exact match	Manassas, VA, United StatesHQ recorded Oct 22, 2026	501-1,000	209 contacts →
	Exact match “As a community-oriented company for over 40 years, we put our customers first and stand behind our products and services.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
14	Haller Enterprises	Exact match	Lititz, PA, United StatesHQ recorded Oct 22, 2026	201-500	197 contacts →
	Exact match “Since 1981, Haller Enterprises has proudly served central and eastern Pennsylvania as a leader in heating, cooling, plumbing, and electrical services.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
15	R.T. Moore	Exact match	Indianapolis, IN, United StatesHQ recorded Oct 22, 2026	501-1,000	191 contacts →
	Exact match “For 70 years, family owned and operated R.T.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
16	L&s Mechanical	Exact match	Richardson, TX, United StatesHQ recorded Oct 22, 2026	501-1,000	188 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
17	Goyette Mechanical	Exact match	Flint, MI, United StatesHQ recorded Oct 22, 2026	201-500	186 contacts →
	Exact match “Founded in 1928, Goyette Mechanical is an industry leader in construction and design-build projects throughout the United States and one of the largest plumbing and HVAC…” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
18	Comfort Systems USA Southeast	Exact match	Pensacola, FL, United StatesHQ recorded Oct 22, 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 22, 2026 · View company records in RevenueBase
19	LEN The Plumber Heating & AIR	Exact match	Baltimore, MD, United StatesHQ recorded Oct 22, 2026	201-500	181 contacts →
	Exact match “Len The Plumber Heating & Air is a leading home services provider delivering trusted plumbing, heating, cooling, and air quality solutions across the Mid-Atlantic region.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
20	Rooter Hero Plumbing & AIR	Exact match	Los Angeles, CA, United StatesHQ recorded Oct 22, 2026	201-500	180 contacts →
	Exact match “https://linktr.ee/Rooter.Hero At Rooter Hero Plumbing, we pride ourselves on providing Competitive Pricing, Quality Work and Professional Service on every plumbing appointment.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
21	ACT Pipe & Supply, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 22, 2026	201-500	179 contacts →
	Exact match “Founded in 1976, ACT brings strong experience to your project, no matter the size or location.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
22	Bayonet Plumbing, Heating & AIR Conditioning	Exact match	Hudson, FL, United StatesHQ recorded Oct 22, 2026	501-1,000	164 contacts →
	Exact match “Bayonet Plumbing, Heating, and Air Conditioning, Inc.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
23	Precision Plumbing	Exact match	Matthews, NC, United StatesHQ recorded Oct 22, 2026	201-500	158 contacts →
	Exact match “Precision Plumbing’s inception in 1981 was born out of a desire to be business entrepreneurs and to bring a level of quality and service unmatched in our industry.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
24	Clack Corporation	Exact match	Windsor, WI, United StatesHQ recorded Oct 22, 2026	201-500	146 contacts →
	Exact match “Established in 1944, Clack Corporation has been providing quality industrial water treatment products, commercial water treatment equipment and molded custom plastic containers.” Recorded in the RevenueBase company graph · Oct 22, 2026 · View company records in RevenueBase
25	Abacus Plumbing, AIR Conditioning & Electrical	Exact match	Houston, TX, United StatesHQ recorded Oct 22, 2026	201-500	136 contacts →
	Exact match “We offer superior plumbing, air conditioning, and electrical services to Residential and Commercial clients in Houston,TX.” Recorded in the RevenueBase company graph · Oct 22, 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 “plumbing and water treatment 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 6,486 plumbing and water treatment contractors based in the United States

See the full list, filter by size, metro and specialty, and access 13,260 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Plumbing and water treatment contractors based in the United States at a glance

As of Oct 22, 2026

27.2%Verified-email coverage

7.5Average contacts per company

11-50Median size (employees)

1.1%Largest-city concentration · Houston

Oct 22, 2026Page data refreshed

Companies by employee count

1-10

3,189

11-50

2,356

51-200

714

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 6,486 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 “plumbing and water treatment 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 13,260 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 22, 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.

Plumbing and water treatment contractors by metro

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

How many plumbing and water treatment contractors are there based in the United States?

RevenueBase identified 6,486 company matches for plumbing and water treatment 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?

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

Which city has the most plumbing and water treatment contractors?

Houston leads with 70 company records, followed by New York (57) and Phoenix (57).

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 13,260 professional contacts with verified work emails tracked across these 6,486 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 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 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.