Company lists · Data refreshed September 2026

Top 17 Environmental assessment firms based in Indianapolis, United States

Name: Environmental assessment firms based in Indianapolis, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 29 companies tracked

RevenueBase identified 29 company matches for environmental assessment firms associated with Indianapolis, United States as of September 2026 and tracks 1,787 professional contacts across them, including 510 with verified work emails. Across the United States, Houston is the largest hub for this category (85 companies); Indianapolis has 29.

This list covers company matches for environmental assessment firms associated with Indianapolis, 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 19, 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 19, 2026 How this list was built

29Companies

1,787Contacts tracked

510Verified emails

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The 17 largest environmental assessment firms based in Indianapolis, United States

Ranked by team size

Top 17 of 29 company matches for environmental assessment firms based in Indianapolis, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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	August Mack Environmental, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	210 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Patriot Engineering And Environmental, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	183 contacts →
	Exact match “Since its beginning in 1995, Patriot has built its reputation on serving the needs of the growing development and redevelopment community.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Keramida INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	152 contacts →
	Exact match “Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	HIS Constructors, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	55 contacts →
	Exact match “HIS Constructors, Inc.(HIS) is a civil construction and environmental remediation company based in Indianapolis, Indiana.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	Metric Environmental, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	47 contacts →
	Exact match “Metric Environmental, LLC is a DBE/MBE environmental consulting firm headquartered in Indianapolis, Indiana with additional offices in Gary, Indiana, Cincinnati, Ohio and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Summit Environmental Services, LLC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	47 contacts →
	Exact match “Summit Environmental Services LLC, based out of Indianapolis, IN, is a nationwide environmental contracting and specialty civil construction services company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Sesco Group	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	40 contacts →
	Exact match “Founded in 1996 as an Environmental Investigation and Remediation company, SESCO Group (SESCO) has established a reputation for excellence in providing environmental consulting…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Enviroforensics	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	30 contacts →
	Exact match “We’re a national full-service environmental consulting firm solving complex environmental issues.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Mundell & Associates, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	19 contacts →
	Exact match “Founded in 1995, Mundell & Associates, Inc.(Mundell) is an earth and environmental services consulting company providing quantitative site characterization and remedial services…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	IWM Consulting Group	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	18 contacts →
	Exact match “IWM Consulting is an environmental consulting firm aimed at helping our clients to maximize their assets and mitigate the risks associated with site utilization and environmental…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	Environmental Field Services, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	14 contacts →
	Exact match “In 1994, our founders wanted to change the way field services for consultants and engineers was performed.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Star Environmental, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	14 contacts →
	Exact match “Star provides compliant, efficient management and removal of our customer’s environmental liabilities supported by a $5M pollution liability insurance policy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Alliance Environmental Group, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	8 contacts →
	Exact match “Alliance Environmental Group, Inc.(Alliance) is a woman-owned environmental consulting company staffed with professionals utilizing a multi-disciplined approach in providing…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Environmental Assurance Co., Inc. Eaci	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	51-200	7 contacts →
	Exact match “A Leader In The Environmental Abatement Industry Since 1991 - Environmental Assurance Company, Inc.(EACI) is an experienced, qualified, full-service environmental contracting…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Delta Services, INC	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	11-50	2 contacts →
	Exact match “For over 20 years DELTA Services has been serving customer locations throughout the State of Indiana.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Amalgaway	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	1-10	2 contacts →
	Exact match “Amalgaway is your environmental solutions company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Stratified Management Group	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “Stratified Management Group is a consulting firm that puts together deals to buy and sell environmentally contaminated properties, resolve long-tail liabilities and redevelop…” Recorded in the RevenueBase company graph · Sep 19, 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 “environmental assessment 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 17 of 29 environmental assessment firms based in Indianapolis, United States

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Environmental assessment firms based in Indianapolis, United States at a glance

As of Sep 19, 2026

28.5%Verified-email coverage

61.6Average contacts per company

11-50Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Indianapolis, so it is reported there. Company counts and contact totals on this page are exact for Indianapolis, over 29 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 Indianapolis, United States whose business descriptions match “environmental assessment 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 510 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 19, 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.

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

How many environmental assessment firms are there based in Indianapolis, United States?

RevenueBase identified 29 company matches for environmental assessment firms associated with Indianapolis, 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?

August Mack Environmental, 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 environmental assessment firms?

Houston leads the United States with 85 company records, followed by New York (50) and Seattle (44). Indianapolis has 29.

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 510 professional contacts with verified work emails tracked across these 29 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 19, 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.