Company lists · Data refreshed September 2026

Top 25 Stormwater management system contractors worldwide

Name: Stormwater management system contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 1,079 companies tracked

RevenueBase identified 1,079 stormwater management system contractors worldwide as of September 2026 and tracks 27,673 professional contacts across them, including 11,223 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.

This list covers stormwater management system contractors worldwide, 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 18, 2026. Country and city lists for stormwater management system contractors follow the table.

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 18, 2026 86% judged on-target in blind review

1,079Companies

27,673Contacts tracked

11,223Verified emails

0Mobile numbers

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The 25 largest stormwater management system contractors worldwide

Ranked by team size

Top 25 of 1,079 stormwater management system contractors worldwide, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to stormwater management system contractors: 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	Tetra Tech	Indirect evidence	Pasadena, CA, United StatesHQ checked Sep 18, 2026	10001+	12,999 contacts →
	Indirect evidence “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Source: RevenueBase Database · checked Sep 18, 2026
2	Armtec	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 18, 2026	1,001-5,000	475 contacts →
	Partial evidence “Armtec has spent over 110 years supplying the most innovative drainage equipment, dynamically designed to support roadways, stormwater, rehabilitation, and erosion control.” Source: RevenueBase Database · checked Sep 18, 2026
3	Herbert, Rowland & Grubic, Inc. - HRG	Partial evidence	Harrisburg, PA, United StatesHQ checked Sep 18, 2026	201-500	371 contacts →
	Partial evidence “HRG assists with the planning, design, and management of community infrastructure.” Source: RevenueBase Database · checked Sep 18, 2026
4	Kessel Drainage Technology	Indirect evidence	Lenting, GermanyHQ checked Sep 18, 2026	501-1,000	243 contacts →
	Indirect evidence “Draining water, treating wastewater and protecting against backwater: As drainage specialists, we protect people from the power of water and protect water from people.” Source: RevenueBase Database · checked Sep 18, 2026
5	Trility	Indirect evidence	Adelaide, AustraliaHQ checked Sep 18, 2026	201-500	217 contacts →
	Indirect evidence “Company Overview: TRILITY is an established industry leader, dedicated in the delivery of water, wastewater, reuse and bio-solids solutions across Australia and New Zealand’s…” Source: RevenueBase Database · checked Sep 18, 2026
6	HNB Engineers Pvt. LTD	Indirect evidence	Pune, IndiaHQ checked Sep 18, 2026	201-500	191 contacts →
	Indirect evidence “HNB ENGINEERS PVT.” Source: RevenueBase Database · checked Sep 18, 2026
7	Felix Construction Company	Strong evidence	Phoenix, AZ, United StatesHQ checked Sep 18, 2026	201-500	178 contacts →
	Strong evidence “Felix Construction Company is a general engineering contractor and construction management company with a specific focus on: Water production facilities, well sites, booster pump…” Source: RevenueBase Database · checked Sep 18, 2026
8	Aquatec	Indirect evidence	Shepparton, AustraliaHQ checked Sep 18, 2026	51-200	177 contacts →
	Indirect evidence “Aquatec partners with Government, business and residential clients to deliver water, wastewater and odour control solutions for the long-term.” Source: RevenueBase Database · checked Sep 18, 2026
9	Hydro International	Partial evidence	Clevedon, United KingdomHQ checked Sep 18, 2026	201-500	166 contacts →
	Partial evidence “Hydro International, a CRH Company, provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management…” Source: RevenueBase Database · checked Sep 18, 2026
10	Soleno	Indirect evidence	Saint-jean-sur-richelieu, QC, CanadaHQ checked Sep 18, 2026	501-1,000	162 contacts →
	Indirect evidence “1st developer of solutions for mastering water sustainably.” Source: RevenueBase Database · checked Sep 18, 2026
11	Atlan Stormwater	Strong evidence	Sydney Olympic Park, AustraliaHQ checked Sep 18, 2026	201-500	147 contacts →
	Strong evidence “At Atlan Stormwater, we draw on more than 45 years’ experience in the design, testing and manufacture of water treatment systems that are utilised in over 45 countries.” Source: RevenueBase Database · checked Sep 18, 2026
12	Stadtentwässerungsbetriebe Köln, AÖR	Indirect evidence	Köln, GermanyHQ checked Sep 18, 2026	501-1,000	140 contacts →
	Indirect evidence “Stadtentwässerungsbetriebe Köln, AöR is a government administration company based out of Ostmerheimer Str.” Source: RevenueBase Database · checked Sep 18, 2026
13	Severn Trent Services	Indirect evidence	Coventry, United KingdomHQ checked Sep 18, 2026	1,001-5,000	137 contacts →
	Indirect evidence “Severn Trent Services offer a range of services to municipal and industrial clients, including the Ministry of Defence and the Coal Authority, for design, build and operation of…” Source: RevenueBase Database · checked Sep 18, 2026
14	Aqualis	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 18, 2026	501-1,000	136 contacts →
	Partial evidence “AQUALIS is the national leader in water management, compliance and engineering, helping businesses meet complex water regulations while protecting long-term infrastructure.” Source: RevenueBase Database · checked Sep 18, 2026
15	Greenrise Technologies	Partial evidence	Nashville, TN, United StatesHQ checked Sep 18, 2026	501-1,000	135 contacts →
	Partial evidence “Stormwater Solutions That Work.” Source: RevenueBase Database · checked Sep 18, 2026
16	Water Works Engineers	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 18, 2026	51-200	135 contacts →
	Indirect evidence “Water Works Engineers is a leading civil and environmental engineering firm specializing in innovative and sustainable solutions for water infrastructure projects across the…” Source: RevenueBase Database · checked Sep 18, 2026
17	Donohue & Associates, INC	Indirect evidence	Sheboygan, WI, United StatesHQ checked Sep 18, 2026	51-200	129 contacts →
	Indirect evidence “Donohue & Associates is an employee-owned, multi-disciplined engineering firm dedicated to one focus: water.” Source: RevenueBase Database · checked Sep 18, 2026
18	CWE	Indirect evidence	Fullerton, CA, United StatesHQ checked Sep 18, 2026	11-50	128 contacts →
	Indirect evidence “CWE, an Apex Company, is a dynamic, award-winning civil engineering firm composed of engineers, scientists, designers, and construction support professionals.” Source: RevenueBase Database · checked Sep 18, 2026
19	ACE Pipe Cleaning INC	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 18, 2026	1,001-5,000	116 contacts →
	Indirect evidence “Ace Pipe Cleaning, Inc, headquartered in Kansas City, Missouri, is part of a nationwide network of 14 Carylon Corporation companies.” Source: RevenueBase Database · checked Sep 18, 2026
20	Stormtrap	Indirect evidence	Romeoville, IL, United StatesHQ checked Sep 18, 2026	51-200	112 contacts →
	Indirect evidence “StormTrap offers proven, leading-edge solutions for managing runoff, protecting waterways and improving the use of your property.” Source: RevenueBase Database · checked Sep 18, 2026
21	Alumasc Water Management Solutions	Partial evidence	Kettering, United KingdomHQ checked Sep 18, 2026	51-200	112 contacts →
	Partial evidence “AWMS, part of Alumasc Group, is the first joined-up brand in integrated water management.” Source: RevenueBase Database · checked Sep 18, 2026
22	Taylor Engineering	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 18, 2026	51-200	105 contacts →
	Indirect evidence “Since 1987, Taylor Engineering, Inc, with headquarters in Jacksonville, Florida; branch offices in Destin and Tampa, Florida; and regional staff throughout Florida and the North…” Source: RevenueBase Database · checked Sep 18, 2026
23	CMP Consulting Group	Partial evidence	Mulgrave, AustraliaHQ checked Sep 18, 2026	51-200	94 contacts →
	Partial evidence “CMP Consulting Group is a multi-disciplinary Engineering firm specialising in design, project management and construction phase services for the Water Industry.” Source: RevenueBase Database · checked Sep 18, 2026
24	Hunter H2o	Indirect evidence	Mayfield West, AustraliaHQ checked Sep 18, 2026	51-200	93 contacts →
	Indirect evidence “Beca HunterH2O is a diverse, empowered, and trusted team of 300+ water specialists, passionate about healthy and sustainable communities wherever we work.” Source: RevenueBase Database · checked Sep 18, 2026
25	Hydrosistem Engenharia	Indirect evidence	Salvador, BrazilHQ checked Sep 18, 2026	1,001-5,000	92 contacts →
	Indirect evidence “A Hydrosistem Engenharia é referência nacional em soluções completas de saneamento, com mais de 20 anos de atuação no gerenciamento, operação e manutenção de sistemas de…” Source: RevenueBase Database · checked Sep 18, 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: stormwater management system contractors. 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 stormwater management system contractors.
Partial evidence: Its own public description names part of stormwater management system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name stormwater management system contractors. 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 1,079 stormwater management system contractors worldwide

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Stormwater management system contractors worldwide at a glance

As of Sep 18, 2026

40.6%Verified-email coverage

25.6Average contacts per company

11-50Median size (employees)

0.9%Largest-city concentration · Houston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

471

11-50

377

51-200

163

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 stormwater management system contractors, 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.
Coverage: 10 countries, largest first: the United States, the United Kingdom, Germany, Australia, Canada, France, India, Italy, Brazil, the Netherlands. Country and city lists for stormwater management system contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “stormwater management system contractors”. 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 stormwater management system contractors), 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 stormwater management system contractors, and records with no verified work email.
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, 11,223 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 18, 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.

Stormwater management system contractors by location

10 lists · largest first

Every Stormwater management system contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 stormwater management system contractors, 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 stormwater management system contractors are there worldwide?

RevenueBase identified 1,079 stormwater management system contractors worldwide 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?

Tetra Tech, headquartered in Pasadena, tops this list with the largest team on record.

Which country has the most stormwater management system contractors?

The United States leads with 558 companies, followed by the United Kingdom (93) and Germany (81). Every stormwater management system contractors list by country and city is linked on this page.

Which city has the most stormwater management system contractors?

Houston leads with 10 headquartered companies, followed by Phoenix (9) and Pune (8).

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 11,223 verified decision-maker contacts tracked across these 1,079 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 18, 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.