Guam Environmental Protection Agency Ahensian Pruteksión Lina'la’ Guåhan

Guam EPA Board of Directors Regularly Scheduled Meeting Canceled

The Guam Environmental Protection Agency Board of Directors’ regularly scheduled meeting for April is canceled due to no quorum.

PUBLIC NOTICE – Guam 2022-2024 IR and 303(d) List of Impaired Waters

The Clean Water Act (CWA) requires states to provide every two years an assessment of the quality of all their waters [section 305(b)] and a list of those that are impaired or threatened [section 303(d)]. The Guam Environmental Protection Agency (Guam EPA) hereby commences a thirty-day review and comment period, beginning April 14, 2025, through…
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PUBLIC NOTICE – PUBLIC COMMENTING PERIOD SEA WALKER TOURS PROJECT

Public Review and Commenting Period: March 13, 2025 – April 13, 2025 The Guam Environmental Protection Agency (Guam EPA) issues this announcement to satisfy established procedures for public notice in §5106(i) of Guam’s Water Quality Standards and in accordance with Clean Water Act section 401(a)(1). The Agency intends to issue a 401 Water Quality Certification…
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Guam EPA Board of Directors Regularly Scheduled Meeting – March 20, 2025

March 14, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, March 20, 2025 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA…
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Guam EPA Board of Directors Regularly Scheduled Meeting – February 20, 2025

February 12, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, February 20, 2025 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube…
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Guam EPA Board of Directors Regularly Scheduled Meeting – January 30, 2025

January 23, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, January 16, 2025 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube…
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POSTPONED: JANUARY 16, 2025 Board of Directors Meeting

January 16, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting scheduled for Thursday, January 16, 2025 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617 is postponed until THURSDAY, JANUARY 30, 2025 at 4:00 p..m. We apologize for…
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Guam EPA Board of Directors Regularly Scheduled Meeting – January 16, 2025

January 7, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, January 16, 2025 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA…
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Guam EPA Board of Directors Regularly Scheduled Meeting – December 19, 2024

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, December 19, 2024 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube channel and can be viewed by…
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PUBLIC COMMENT & PUBLIC HEARING EXTENDED FOR THE STATE IMPLEMENTATION PLAN PURSUANT TO THE CLEAN AIR ACT

Notice is hereby given to the general public that the Guam Environmental Protection Agency (Guam EPA) intends to submit 22 GAR 1-§1310, as enacted by Guam Public Law 37-29, and 22 GAR 1-§1801 – 22 GAR 1-§1811 as enacted by Guam Public Law 36-140 to the United States Environmental Protection Agency for inclusion into Guam’s State…
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Guam EPA Board of Directors Meeting – Thursday, November 21, 2024

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, November 21, 2024 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube channel and can be viewed by…
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REMINDER NOTICE: 2025 UST Operating Permits

Hafa Adai! The Guam Environmental Protection Agency (Guam EPA) would like to remindowners and operators of Underground Storage Tanks (UST) containing regulated substances thatthey are required by the Underground Storage of Regulated Substances Act, as amended,Chapter 76 of Title 10 Guam Code Annotated, and Title 22 Guam Administrative Rules andRegulations Chapter 50 Underground Storage Tank…
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PUBLIC NOTICE: 30 Day Public Comment & Public Hearing – State Implementation Plan Pursuant to the Clean Air Act

Guam EPA Board of Directors Meeting – Thursday, October 24, 2024

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, September 26, 2024 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube channel and can be viewed by…
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Guam EPA Board of Directors Regularly Scheduled Meeting – September 26, 2024

Guam EPA Board of Directors Regularly Scheduled Meeting – August 29, 2024

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, August 29, 2024 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube channel and can be viewed by…
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Draft Risk Assessment Document – Proposed Interim Action Level for Dieldrin

JUNE 10, 2024 (Tiyan, Guam) – In accordance with the Guam Safe Drinking Water Act as reenacted through Guam Public Law 35-115, the Guam Environmental Protection Agency (Guam EPA) seeks to establish Interim Action Levels (IAL) for Dieldrin in drinking water. Dieldrin is a human-made chemical used as an insecticide from the 1950s until 1987.…
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Guam 2023 Annual State Public Water System Compliance Report Now Available

On May 20, 2024, the Guam Environmental Protection Agency (Guam EPA) submitted its 2023 Annual State Public Water System Compliance Report to the U.S. EPA. The report is due every year on July 1, and entails compliance reporting of eight (8) public water systems under Guam EPA’s regulatory authority. This report is required under the…
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Guam EPA Board of Directors Regularly Scheduled Meeting – May 23, 2024

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, May 23, 2024 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube channel and can be viewed by…
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Guam EPA Board of Directors Regularly Scheduled Meeting – April 18, 2024

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, April 18, 2024 at 4 p.m. at the Guam EPA administration building conference room at 17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913-1617. This meeting will be live streamed on the Guam EPA YouTube channel and can be viewed by…
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UPDATED AS OF JULY 18, 2024: Requirements for Septic Systems

Please be advised that the Toilet Facilities and Sewage Disposal Chapter codified in 10 GCA Chapter 48 has been amended through the enactment of Guam Public Law 37-105.

On July 18, 2024, Bill 175-37(COR) as substituted and amended on the floor was signed into law as Guam Public Law 37-105 and is effective upon enactment. As a result of this enactment, certain conditional environmental clearances issued by the Guam Environmental Protection Agency for building permits issued by the Department of Public Works have changed and will now be performed in accordance to this new law and its amended provisions.

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OLD Lot Requirements for Septic Tanks & Leaching Fields FAQs

CLICK HERE FOR VIEW THE FAQs.

In Guam, the use of onsite wastewater disposal systems commonly referred to as ”septic systems,” is regulated through a number of laws and regulations. These laws and regulations cover specific requirements for the permitting, design and construction of septic systems in Guam. Guam EPA has developed this FAQ to help you understand the application of various requirements to the design, permitting, and construction of a septic system for a single family dwelling.