Data as of Aug 25, 2026 · Based on 1,009 AI responses · See how Parse measures this
The U.S. Environmental Protection Agency (EPA) remains the most cited resource for environmental compliance questions, frequently appearing as the top recommendation. However, since November 2025, AI models have increasingly recommended academic resources like Harvard's Environmental & Energy Law Program to track regulatory changes, alongside a growing number of specialized software vendors.
Environmental Compliance Management Software
Parse
https://parse.gl
| # | Brand | What AI says | Mention rate |
|---|---|---|---|
| 1 | The foundational source for all federal regulations, guidance, and compliance tools. | 46% | |
| 2 | The official portal for tracking rulemaking dockets and submitting public comments. | 22% | |
| 3 | Cited as the essential daily publication for tracking new and proposed rules. | 22% | |
| 4 | 10% | ||
| 5 | 8% | ||
| 6 | 6% | ||
| 7 | Frequently cited as a tool for managing environmental permit workflows. | 6% | |
| 8 | 5% | ||
| 9 | 5% | ||
| 10 | 5% | ||
| 11 | 4% | ||
| 12 | The leading authority for environmental audit frameworks, particularly ISO 14001. | 4% | |
| 13 | 4% | ||
| 14 | 4% | ||
| 15 | 4% | ||
| 16 | 4% | ||
| 17 | 4% | ||
| 18 | 3% | ||
| 19 | 3% | ||
| 20 | 3% | ||
| 21 | 3% | ||
| 22 | 3% | ||
| 23 | 3% | ||
| 24 | 3% | ||
| 25 | 3% |
Who wins on each AI
The same market, seen by two models.
Sources AI cited
epa.gov is the page AI reaches for most here, cited in 80% of analyzed answers.
“A general reference for federal law” → “A suite of specific tools like ECHO and ERT for compliance”
Its overall rank fell from #8 to #15 between Nov 2025 and Mar 2026.
Rose from rank #31 to #6 between Nov 2025 and Mar 2026.
Jumped from rank #68 to #12 between Nov 2025 and Mar 2026.
| Brand | ChatGPT Search | Google AI Mode | Comparison |
|---|---|---|---|
| 42% | 38% | ||
| 28% | 26% | ||
| 29% | 14% | ||
| 3% | 19% | ||
| 25% | 6% |
The two models disagree most about EPA ECHO (Enforcement and Compliance History Online) (ChatGPT #23, Google #3).
The U.S. Environmental Protection Agency (EPA) remains the most cited resource for environmental compliance questions, frequently appearing as the top recommendation. However, since November 2025, AI models have increasingly recommended academic resources like Harvard's Environmental & Energy Law Program to track regulatory changes, alongside a growing number of specialized software vendors.
Across 1,009 AI responses, U.S. Environmental Protection Agency (EPA) is mentioned most, named in 46% of them, followed by Regulations.gov (22%) and Federal Register (22%).
Parse measures each brand's mention rate — the share of answers naming it — across 1,009 AI responses to this market's buyer questions. Answers are collected daily and the ranking is published weekly.
Brands enter the ranking when AI answers mention them. Parse collects answers daily and publishes the re-measured set weekly, so new brands appear as AI starts recommending them.
AI models consistently recommend understanding the regulatory framework, maintaining accurate monitoring, and using control technologies. While early responses cited a mix of commercial and government sources, mentions of the U.S. Environmental Protection Agency (EPA) became much more dominant and consistent starting in December 2025.
Brands mentioned
What are the best practices for complying with air quality regulations?
AI models consistently recommend understanding the regulatory framework, maintaining accurate monitoring, and using control technologies. While early responses cited a mix of commercial and government sources, mentions of the U.S. Environmental Protection Agency (EPA) became much more dominant and consistent starting in December 2025.
Responses consistently recommend primary government sources like the U.S. Environmental Protection Agency (EPA), Regulations.gov, and the . Beginning in January 2026, professional organizations like the and the became more frequent recommendations, particularly in ChatGPT responses.
Responses consistently recommend primary government sources like the U.S. Environmental Protection Agency (EPA), Regulations.gov, and the
Federal Register. Beginning in January 2026, professional organizations like the
Air & Waste Management Association and the
Water Environment Federation became more frequent recommendations, particularly in ChatGPT responses.