Proposed 2027 Construction General Permit (CGP) and Related Documents
On August 3, 2026, EPA published its proposed 2027 CGP for a 30-day comment period. Once the CGP is finalized, it will replace the 2022 CGP, which expires on February 16, 2027, and will cover stormwater discharges from construction activities in areas where EPA is the NPDES permitting authority in EPA’s Regions 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.
Extension of Public Comment Deadline to September 17, 2026: In response to multiple requests to extend the comment period, EPA has extended the deadline to submit public comments on the proposed 2027 CGP to September 17, 2026. As a result of this extension, the original deadline appearing in the August 3, 2026 Federal Register notice (pdf) (258.8 KB) of September 2, 2026, no longer applies and has been replaced by the extended deadline of September 17, 2026.
Comments can be submitted on www.regulations.gov for docket ID # EPA-HQ-OW-2025-0760 (https://www.regulations.gov/document/EPA-HQ-OW-2025-0760-0001).
EPA Webinar on the Proposed CGP: EPA is hosting a webinar on Tuesday, August 18, 2026, from 2:00 to 3:30 p.m. (Eastern time) to review the proposed changes to the CGP and to answer questions. Register to participate in the webinar.
Key Documents for Proposed 2027 CGP: Key documents that are part of the proposed 2027 CGP are available below. Note: proposed changes to the CGP permit and appendices appear in blue font; changes to the CGP fact sheet appear in purple font.
- Proposed 2027 CGP – Permit (not including appendices) (pdf)
- Proposed 2027 CGP – Appendices (only includes appendices with proposed changes):
- Proposed 2027 CGP – Fact Sheet (pdf)