Company lists · Data refreshed November 2026

Top 25 Stormwater permitting specialists worldwide

RevenueBase identified 730 company matches for stormwater permitting specialists worldwide as of November 2026 and tracks 6,309 professional contacts across them, including 2,688 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for stormwater permitting specialists 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 stormwater permitting specialists 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
730Companies
6,309Contacts tracked
2,688Verified emails
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The 25 largest stormwater permitting specialists worldwide

Ranked by team size
Top 25 of 730 company matches for stormwater permitting specialists 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMorrisville, CO, United StatesHQ recorded Nov 6, 2026501-1,000151 contacts →

Exact match

“AQUALIS is the national leader in water management, compliance and engineering, helping businesses meet complex water regulations while protecting long-term infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchDenver, WA, United StatesHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchYaphank, GA, United StatesHQ recorded Nov 6, 202651-200138 contacts →

Exact match

“EnviroTrac Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNashville, TN, United StatesHQ recorded Nov 6, 2026501-1,000134 contacts →

Exact match

“Stormwater Solutions That Work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchGreenwood Village, CO, United StatesHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“CMS Environmental Solutions is a stormwater compliance consultant providing NOI permitting, development, dewatering planning, site inspections, and custom stormwater management…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchPhoenix, IL, United StatesHQ recorded Nov 6, 202651-200128 contacts →

Exact match

“America's #1 Stormwater Consultants Earthworks Environmental, LLC provides top of the line storm water pollution prevention (SWPP/NPDES), erosion control and dust control…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Juan Capistrano, CA, United StatesHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchHarrisburg, MD, United StatesHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“Established in 1969, Skelly and Loy is a privately owned, mid-sized corporation with 6 Mid-Atlantic offices.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOrange, CA, United StatesHQ recorded Nov 6, 202611-5095 contacts →

Exact match

“EEC Environmental is a national environmental consulting firm that specializes in water, wastewater, stormwater, regulatory compliance, safety, and assessment and remediation of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchKfar Saba, IsraelHQ recorded Nov 6, 202651-20094 contacts →

Exact match

“Engineering a Sustainable Future, One Project at a Time Founded in Israel in 1996, DHV MED has become a leader in environmental engineering and consulting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCity Of Tshwane, South AfricaHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“Established in 2013, Eco Elementum is a multidisciplinary environmental and engineering consultancy serving the mining, energy, industrial and public sectors, from four offices…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDavis, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHouston, FL, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchFort Collins, WA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“We deliver quality solutions with integrity and expertise, every time.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBakersfield, CA, United StatesHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Bancroft is an environmental consulting and construction services firm helping utility, renewable energy, transportation, and infrastructure clients successfully develop, build…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHonolulu, HI, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“We Are a Full-Service Environmental Consultancy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchSparks, MD, United StatesHQ recorded Nov 6, 202651-20048 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 · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Quandary Consultants, LLC (QC) is an environmental and regulatory consulting company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPasadena, CA, United StatesHQ recorded Nov 6, 202611-5044 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchVaughan, ON, CanadaHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“Groundwater Environmental Management Services (GEMS), is the Environmental Specialist for the Construction Industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMesa, AZ, United StatesHQ recorded Nov 6, 2026501-1,00043 contacts →

Exact match

“Energy Environmental Group (EEG) is a full-service environmental consulting firm specializing in all aspects of environmental permitting, inspection, and compliance monitoring.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchAmerican Fork, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“Experience turnkey services with Silver Leaf Best Management Practices / for Construction site storm water control, street sweeping, and dewatering.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSanta Monica, CA, United StatesHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Catalyst Environmental Solutions Corporation is a full service environmental consulting firm, specializing in the energy sector, land development and remediation, and water…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“SoundEarth is a 100% employee-owned environmental consulting firm with more than 40 dedicated and talented professionals working together to improve the environment in which we…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 730 stormwater permitting specialists worldwide

See the full list, filter by size, metro and specialty, and access 2,688 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Stormwater permitting specialists worldwide at a glance

As of Nov 6, 2026
42.6%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
1.6%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
475
11-50
198
51-200
49
201-500
2
501-1,000
4

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 stormwater permitting specialists are linked below.
What qualifies
Company records worldwide whose business descriptions match “stormwater permitting specialists” 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 2,688 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.

Stormwater permitting specialists by location

1 lists · largest first

Every Stormwater permitting specialists 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 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 “stormwater permitting specialists”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many stormwater permitting specialists are there worldwide?

RevenueBase identified 730 company matches for stormwater permitting specialists 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?

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

Which country has the most stormwater permitting specialists?

The United States leads with 493 companies. Every stormwater permitting specialists list by country and city is linked on this page.

Which city has the most stormwater permitting specialists?

Houston leads with 12 company records, followed by San Diego (8) and Austin (7).

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 2,688 professional contacts with verified work emails tracked across these 730 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.