Company lists · Data refreshed September 2026

Top 18 Compliance and environmental consulting firms based in San Antonio, United States

Name: Compliance and environmental consulting firms based in San Antonio, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 32 companies tracked

RevenueBase identified 32 company matches for compliance and environmental consulting firms associated with San Antonio, United States as of September 2026 and tracks 880 professional contacts across them, including 512 with verified work emails. Across the United States, Houston is the largest hub for this category (188 companies); San Antonio has 32.

This list covers company matches for compliance and environmental consulting firms associated with San Antonio, 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 September 27, 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 Sep 27, 2026 How this list was built

32Companies

880Contacts tracked

512Verified emails

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The 18 largest compliance and environmental consulting firms based in San Antonio, United States

Ranked by team size

Top 18 of 32 company matches for compliance and environmental consulting firms based in San Antonio, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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	Raba Kistner, INC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	582 contacts →
	Exact match “Founded in 1968, Raba Kistner Inc.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Cleary Zimmermann Engineers	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	51-200	119 contacts →
	Exact match “Cleary Zimmermann Engineers is a consulting engineering firm specializing in Building MEP, Industrial MEP, Commissioning, and Water/Wastewater services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Safzone Field Services	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	51-200	31 contacts →
	Exact match “SafZone Field Services is an industry leader providing consulting services, customized on-site safety programs with certified experts, precision-engineered spill containment…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Flatrock Engineering And Environmental	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	11-50	27 contacts →
	Exact match “Flatrock Engineering & Environmental has the experience and expertise to offer a wide variety of services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Engineering Dynamics Incorporated	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	11-50	10 contacts →
	Exact match “ENGINEERING DYNAMICS INCORPORATED is an independent engineering firm offering consulting services to a wide range of industries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Barber & Barber Associates, INC	Exact match	San Antonio, United StatesHQ recorded Sep 27, 2026	1-10	10 contacts →
	Exact match “We see green.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Specpro Sustainment And Environmental, LLC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	51-200	7 contacts →
	Exact match “SpecPro Sustainment & Environmental, LLC (SSE), is an environmental and facilities services firm headquartered in San Antonio, Texas.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Nepa Specialist	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	7 contacts →
	Exact match “Delivering professional real-world environmental solutions through integrity and growth.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Sunpro Services LLC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	6 contacts →
	Exact match “Sunpro Services LLC specializes in comprehensive environmental solutions, offering expertise in air quality and compliance, spill prevention, soil and groundwater services, water…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	M-Biolabs, INC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	11-50	5 contacts →
	Exact match “M-BioLabs assists the health care community by offering expertise in identifying areas of risk, aiding in developing and implementing environmental monitoring programs, and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	Geo-Prime	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	3 contacts →
	Exact match “Geo-PRIME (Pipeline Regulatory & Integrity Management Experts) provides a wide range of services including CFR 192 and 195 regulatory compliance and integrity management program…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	ESB Civil Consulting	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	2 contacts →
	Exact match “At ESB Civil Consulting, we bring innovation and precision to civil engineering and land development.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Azure Engineering, LLC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	2 contacts →
	Exact match “Azure Engineering is a team of experienced professional engineers and environmental experts, and we are here to help.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	ESA Mechanical & Electrical Engineering, INC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	11-50	1 contacts →
	Exact match “Mechanical and Electrical Engineering Consulting” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Sapphire Compliance Management, LLC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Ecostat Consulting, LLC	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	1 contacts →
	Exact match “Environmental consultants specializing in groundwater remediation, dewatering services, regulatory compliance & permitting, waste transportation & disposal, and emergency response…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Pure Environmental Solutions, L.L.C	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Zalat & Company	Exact match	San Antonio, TX, United StatesHQ recorded Sep 27, 2026	1-10	1 contacts →
	Exact match “Zalat & Company is a professional services firm specializing in auditing management systems, construction management, and project engineering-delivering every engagement with…” Recorded in the RevenueBase company graph · Sep 27, 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 “compliance and environmental consulting 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 18 of 32 compliance and environmental consulting firms based in San Antonio, United States

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Compliance and environmental consulting firms based in San Antonio, United States at a glance

As of Sep 27, 2026

58.2%Verified-email coverage

27.5Average contacts per company

1-10Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than for San Antonio, so it is reported there. Company counts and contact totals on this page are exact for San Antonio, over 32 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 San Antonio, United States whose business descriptions match “compliance and environmental consulting 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. 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 512 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 September 27, 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.

Compliance and environmental consulting firms by metro in the United States

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 “compliance and environmental consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many compliance and environmental consulting firms are there based in San Antonio, United States?

RevenueBase identified 32 company matches for compliance and environmental consulting firms associated with San Antonio, United States as of September 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?

Raba Kistner, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most compliance and environmental consulting firms?

Houston leads the United States with 188 company records, followed by New York (163) and Denver (84). San Antonio has 32.

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 512 professional contacts with verified work emails tracked across these 32 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 September 27, 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.