Company lists · Data refreshed November 2026

Top 25 Plumbing engineering firms worldwide

Name: Plumbing engineering firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 23,358 companies tracked

RevenueBase identified 23,358 company matches for plumbing engineering firms worldwide as of November 2026 and tracks 304,206 professional contacts across them, including 104,617 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for plumbing engineering firms worldwide, 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. Country and city lists for plumbing engineering firms follow the table.

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

23,358Companies

304,206Contacts tracked

104,617Verified emails

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The 25 largest plumbing engineering firms worldwide

Ranked by team size

Top 25 of 23,358 company matches for plumbing engineering firms worldwide, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Multiconsult	Exact match	Oslo, NorwayHQ recorded Nov 6, 2026	1,001-5,000	2,654 contacts →
	Exact match “Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,633 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	The Haskell Company	Exact match	Jacksonville, WI, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,439 contacts →
	Exact match “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,116 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Ashirvad By Aliaxis	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	5,001-10,000	1,909 contacts →
	Exact match “Ashirvad by Aliaxis \| Pioneering Fluid Management for Over 27 Years For more than two decades, Ashirvad has been at the forefront of fluid management solutions in India-delivering…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,827 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	CHA Consulting, INC	Exact match	Albany, NH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,780 contacts →
	Exact match “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,675 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Kpff Consulting Engineers	Exact match	Seattle, ID, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,631 contacts →
	Exact match “KPFF is a multi-office, multi-discipline engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Comfort Systems USA	Exact match	Houston, IN, United StatesHQ recorded Nov 6, 2026	10001+	1,407 contacts →
	Exact match “Comfort Systems USA \| Quality People.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Volkert, INC	Exact match	Mobile, AL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,244 contacts →
	Exact match “Volkert’s history began in 1925 when it was founded in New Orleans as Doullut & Erwin to provide waterfront and heavy construction services, as well as airport design services…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Hoare LEA	Exact match	London, United KingdomHQ recorded Nov 6, 2026	501-1,000	1,183 contacts →
	Exact match “We are an award-winning engineering consultancy with a creative team of engineers, designers, and technical specialists.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	BTP Consultants	Exact match	Montigny-le-bretonneux, FranceHQ recorded Nov 6, 2026	201-500	1,170 contacts →
	Exact match “BTP Consultants est un bureau de ̂, et présent à l'échelle nationale depuis plus de.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Mckenney's, INC	Exact match	Atlanta, NC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,143 contacts →
	Exact match “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Mapa Group	Exact match	Ankara, TürkiyeHQ recorded Nov 6, 2026	10001+	1,130 contacts →
	Exact match “Mapa Group has emerged as a global leader in the engineering and construction industry, now spanning three continents.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Henderson Engineers	Exact match	Lenexa, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	1,124 contacts →
	Exact match “Henderson Engineers is a national building systems design firm with a wide array of engineering services and a portfolio representing a full range of markets including business…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Cmta, INC	Exact match	Louisville, TN, United StatesHQ recorded Nov 6, 2026	501-1,000	1,049 contacts →
	Exact match “CMTA is part of Legence, a Nasdaq Listed company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Simpson Gumpertz & Heger SGH	Exact match	Waltham, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	969 contacts →
	Exact match “Simpson Gumpertz & Heger (SGH) is a national engineering firm committed to delivering holistic advice for our clients’ most complex challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	M. N. Dastur & Co. P LTD	Exact match	Kolkata, IndiaHQ recorded Nov 6, 2026	1,001-5,000	941 contacts →
	Exact match “M.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Anel Group	Exact match	İstanbul, TürkiyeHQ recorded Nov 6, 2026	1,001-5,000	937 contacts →
	Exact match “Founded by Rıdvan Çelikel in 1986, Anel is a global contracting company with its expertise in MEP systems in large scale and challenging projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Coffman Engineers	Exact match	Seattle, CO, United StatesHQ recorded Nov 6, 2026	501-1,000	919 contacts →
	Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Syska Hennessy Group	Exact match	Raleigh, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	857 contacts →
	Exact match “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Dorsch Holding Gmbh - ABU Dhabi	Exact match	Abu Dhabi, United Arab EmiratesHQ recorded Nov 6, 2026	501-1,000	820 contacts →
	Exact match “Dorsch Holding GmbH – Abu Dhabi is part of Dorsch Global – a global network of planning and consulting companies, headquartered in Essen, Germany.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Parlym	Exact match	Estaque, FranceHQ recorded Nov 6, 2026	1,001-5,000	801 contacts →
	Exact match “For over 50 years the Parlym Group has managed to establish itself as a major player in industrial engineering all over the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Hatch Mott Macdonald	Exact match	Iselin, NJ, United StatesHQ recorded Nov 6, 2026	1,001-5,000	800 contacts →
	Exact match “This page is now closed.” Recorded in the RevenueBase company graph · Nov 6, 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 engineering firms”. 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 23,358 plumbing engineering firms worldwide

See the full list, filter by size, metro and specialty, and access 104,617 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Plumbing engineering firms worldwide at a glance

As of Nov 6, 2026

34.4%Verified-email coverage

13.0Average contacts per company

1-10Median size (employees)

0.7%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11,651

11-50

8,084

51-200

2,434

201-500

476

501-1,000

162

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for plumbing engineering firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “plumbing engineering firms” 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. 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 104,617 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.

Plumbing engineering firms by location

109 lists · largest first

Every Plumbing engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many plumbing engineering firms are there worldwide?

RevenueBase identified 23,358 company matches for plumbing engineering firms worldwide 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?

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

Which country has the most plumbing engineering firms?

The United States leads with 7,903 companies, followed by Canada (1,166) and the United Kingdom (1,029). Every plumbing engineering firms list by country and city is linked on this page.

Which city has the most plumbing engineering firms?

Sao Paulo leads with 162 company records, followed by New York (157) and Houston (154).

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 104,617 professional contacts with verified work emails tracked across these 23,358 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.