Company lists · Data refreshed October 2026

Top 25 Constructed wetland system contractors based in the United States

RevenueBase identified 193 company matches for constructed wetland system contractors associated with the United States as of October 2026 and tracks 4,985 professional contacts across them, including 2,793 with verified work emails. Portland is the largest hub.

This list covers company matches for constructed wetland 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
193Companies
4,985Contacts tracked
2,793Verified emails
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The 25 largest constructed wetland system contractors based in the United States

Ranked by team size
Top 25 of 193 company matches for constructed wetland 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWalnut Creek, CA, United StatesHQ recorded Oct 10, 20261,001-5,0001,811 contacts →

Exact match

“For more than 90 years, Carollo Engineers has been dedicated exclusively to water and wastewater solutions.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
2Exact matchBellaire, TX, United StatesHQ recorded Oct 10, 2026501-1,000678 contacts →

Exact match

“As the nation’s largest nature-based solutions company, RES (Resource Environmental Solutions) is restoring a resilient earth for a modern world, project by project.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
3Exact matchRobbinsville, NJ, United StatesHQ recorded Oct 10, 202651-200152 contacts →

Exact match

“Founded in Sovereign is an environmental and water and wastewater construction firm with offices throughout the country.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
4Exact matchAnaheim, CA, United StatesHQ recorded Oct 10, 202651-200131 contacts →

Exact match

“Tomorrow Water is an innovative environmental solutions company specializing in both wastewater and organic waste treatment.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
5Exact matchEscondido, CA, United StatesHQ recorded Oct 10, 2026201-500127 contacts →

Exact match

“Headquartered in Escondido, California, Filanc is an award-winning, general engineering and design-build contractor that solely constructs, renovates, and expands water and…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
6Exact matchDeerwood, MN, United StatesHQ recorded Oct 10, 2026201-500124 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
7Exact matchMillersville, MD, United StatesHQ recorded Oct 10, 2026201-500109 contacts →

Exact match

“Our mission is to be the keystone species in the restoration of the Chesapeake Bay.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
8Exact matchRaleigh-durham, FL, United StatesHQ recorded Oct 10, 202651-20086 contacts →

Exact match

“Dragonfly Pond Works is an environmental service company specializing in lake, pond, and stormwater management and beautification.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
9Exact matchWoodbury, NY, United StatesHQ recorded Oct 10, 2026201-50085 contacts →

Exact match

“Founded in 1965, D&B Engineers and Architects (D&B) is committed to improving quality of life with innovative engineering solutions in sustainable, environmentally acceptable…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
10Exact matchMarshfield, WI, United StatesHQ recorded Oct 10, 202651-20074 contacts →

Exact match

“Staab Construction Corporation is one of the premier builders of municipal and industrial water and wastewater treatment systems in the Midwest.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
11Exact matchWilder, KY, United StatesHQ recorded Oct 10, 202651-20070 contacts →

Exact match

“Building Crafts, Inc.(BCI) specializes as a general contractor primarily in the Design and Installation of industrial and municipal water and wastewater treatment plants.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
12Exact matchPalmetto, FL, United StatesHQ recorded Oct 10, 202651-20068 contacts →

Exact match

“TLC Diversified is one of the leading privately held construction firms in the state of Florida specializing in water and wastewater infrastructure.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
13Exact matchHartland, WI, United StatesHQ recorded Oct 10, 202651-20062 contacts →

Exact match

“The Probst Group, LLC (TPG) is an engineering firm specializing in industrial wastewater management.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
14Exact matchWakefield, MA, United StatesHQ recorded Oct 10, 202651-20051 contacts →

Exact match

“SumCo Eco-Contracting is a leading Northeast-based self-performing heavy / site / civil construction firm focused on ecological and environmental improvement projects.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
15Exact matchSparks, MD, United StatesHQ recorded Oct 10, 202651-20045 contacts →

Exact match

“SMC is an engineering, survey, construction, and maintenance firm focused on stormwater, stream restoration, and drainage systems.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
16Exact matchLititz, PA, United StatesHQ recorded Oct 10, 202611-5044 contacts →

Exact match

“LandStudies, a Davey Tree Company, is a design-build ecological restoration firm founded in 1989.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
17Exact matchTomball, TX, United StatesHQ recorded Oct 10, 202611-5043 contacts →

Exact match

“EPR was created in 2012 to be a premier environmental planning and ecosystem restoration company.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
18Exact matchSanta Rosa, CA, United StatesHQ recorded Oct 10, 202651-20042 contacts →

Exact match

“Our vision is to provide seamless water and wastewater project delivery to our clients by integrating design, construction, plant operations and maintenance.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
19Exact matchManhattan, KS, United StatesHQ recorded Oct 10, 202651-20031 contacts →

Exact match

“Walters-Morgan Construction, Inc.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
20Exact matchMesa, AZ, United StatesHQ recorded Oct 10, 202651-20030 contacts →

Exact match

“Founded in 2010 to address the critical need for expert stormwater drainage solutions, StormWater Pros has evolved from a local service provider into a premier regional leader in…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
21Exact matchGolden, CO, United StatesHQ recorded Oct 10, 202611-5030 contacts →

Exact match

“As an award-winning constructor of municipal, federal, and private sector water and wastewater treatment facilities, Stanek Constructors self-performs much of their work…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
22Exact matchTheodore, AL, United StatesHQ recorded Oct 10, 202651-20029 contacts →

Exact match

“Design Build Solutions for Wastewater Collection Systems and Treatment Facilities.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
23Exact matchRedmond, WA, United StatesHQ recorded Oct 10, 202611-5028 contacts →

Exact match

“Harbor Pacific Contractors' core business is the construction, renovation and expansion of water and wastewater treatment plants, pump stations, industrial buildings…”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
24Exact matchWylie, TX, United StatesHQ recorded Oct 10, 202611-5027 contacts →

Exact match

“Cardinal Strategies is a certified Women’s Business Enterprise (WBE) and award-winning North Texas firm providing integrated stormwater and environmental solutions.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Oct 10, 202611-5026 contacts →

Exact match

“eDESIGN DYNAMICS is an environmental engineering and planning firm committed to solving water and ecological resources challenges in the developed and developing worlds.”

Recorded in the RevenueBase company graph · Oct 10, 2026 · View company records in RevenueBase

Showing 25 of 193 constructed wetland system contractors based in the United States

See the full list, filter by size, metro and specialty, and access 2,793 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Constructed wetland system contractors based in the United States at a glance

As of Oct 10, 2026
56.0%Verified-email coverage
25.8Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Portland
Oct 10, 2026Page data refreshed

Companies by employee count

1-10
74
11-50
79
51-200
32
201-500
5
501-1,000
1
1,001-5,000
1
5,001-10,000
1

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 193 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 “constructed wetland 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 2,793 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.

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

How many constructed wetland system contractors are there based in the United States?

RevenueBase identified 193 company matches for constructed wetland 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?

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

Which city has the most constructed wetland system contractors?

Portland leads with 4 company records, followed by Austin (3) and Baltimore (3).

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 2,793 professional contacts with verified work emails tracked across these 193 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.