17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913
671.588.4751 FAX: 671.588.4531

Guam Environmental Protection Agency Ahensian Pruteksión Lina'la’ Guåhan

All Living Things Of The Earth Are One • Manunu Todu I Manlåla’la’

PUBLIC NOTICE: Request for Statements of Qualifications — EXTENSION

The Guam Environmental Protection Agency (Guam EPA) is soliciting Statements of Qualification for Professional Services to be performed by a Botanist/Ecologist to assist Guam EPA’s field crew members with field identification and data analysis for the National Wetland Condition Assessment (NWCA). Statements of Qualification shall include  (1) technical education and training; (2) general or special experience, certifications,…
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Guam EPA Board of Directors Regularly Scheduled Meeting — March 19, 2026

March 18, 2026 — (TIYAN, Guam) — The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, March 19, 2026 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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PUBLIC NOTICE: Request for Statements of Qualifications

The Guam Environmental Protection Agency (Guam EPA) is soliciting Statements of Qualification for Professional Services to be performed by a Botanist/Ecologist to assist Guam EPA’s field crew members with field identification and data analysis for the National Wetland Condition Assessment (NWCA). Statements of Qualification shall include  (1) technical education and training; (2) general or special…
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PUBLIC NOTICE: Seeking Public Comment on Proposed Updates to Risk Assessment Document for Dieldrin Interim Action Level

Pursuant to 10 GCA Ch 53 §53113 (c) The Guam Environmental Protection Agency (Guam EPA) issues this public notice to seek public comment on the Guam EPA’s proposed updates to the Risk Assessment Document: Interim Action Level for Dieldrin, approved in November 2024. This notice also serves to notify the general public that a public…
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Guam EPA Board of Directors Regularly Scheduled Meeting — February 19, 2026

February 13, 2026 — (TIYAN, Guam) — The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, February 19, 2026 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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REQUEST FOR PUBLIC INVOLVEMENT — Triennial Review of Guam Water Quality Standards

The Guam Environmental Protection Agency (Guam EPA) needs your help in reviewing Guam’sWater Quality Standards (WQS) per the Clean Water Act (CWA) Section 303(c). • Section 303(c)(1) of the CWA and the US EPA regulations at 40 CFR 131.20 require that Guam,from time to time, but at least once every three years, hold public hearings…
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Guam EPA Soliciting Marine and Surface Water Quality Data Collected January 1, 2021 — December 31, 2025

January 29, 2026 — The Guam Environmental Protection Agency invites the public and all parties interested in fresh and marine surface water quality to share available water quality data collected during the years from January 1, 2021 to December 31, 2025. The Clean Water Act (CWA) requires Guam to provide every two years an assessment…
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PUBLIC NOTICE: Seeking Public Comment on Proposed Updates to Risk Assessment Document for Dieldrin Interim Action Level

Pursuant to 10 GCA §53113 (Guam Safe Drinking Water Act)The Guam EnvironmentalProtection Agency (Guam EPA) issues this public notice to seek public comment on the GuamEPA’s proposed updates to the Risk Assessment Document: Interim Action Level for Dieldrin,approved in November 2024. This notice also serves to notify the general public that a publichearing will be…
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FOR IMMEDIATE RELEASE – November 14, 2025 Press Release

PUBLIC NOTICE – Order of Adjournment

Guam EPA Issues Notice of Violation to Palisades Subdivision Project Developer

November 7, 2025. The Guam Environmental Protection Agency (GEPA) is informing the community that a Notice of Violation (NOV) was issued to the Palisades Subdivision project developer. This NOV was issued following GEPA’s investigation into the Palisades Subdivision project as a result of the landslide occurring on route 1 in Hagatña on October 15, 2025.

Guam EPA Board of Directors Regularly Scheduled Meeting — November 13, 2025

The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, November 13, 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 channel and can be viewed by…
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Guam EPA launches Investigation into Landslide’s Potential Environmental Impact

The Guam Environmental Protection Agency (GEPA) has launched an investigation into any potential ramifications that may have been caused by the landslide that occurred on East Agana on October 15, 2025.

PUBLIC NOTICE – Order of Adjournment

Guam EPA Board of Directors Regularly Scheduled Meeting – September 18, 2025

September 17, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, September 18, 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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Risk Assessment Document: Interim Action Level for Dieldrin

This Interim Action Level (IAL) was established by the Guam Environmental Protection Agency Board of Directors on November 21, 2024 pursuant to Guam Safe Drinking Water Act 10 GCA §53113. The Risk Assessment Document is available on our Safe Drinking Water page. Please click here to view.

Guam EPA Board of Directors Regularly Scheduled Meeting – August 21, 2025

August 15, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, August 21, 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 Director Regularly Scheduled Meeting – July 24, 2025

July 16, 2025 – (TIYAN, Guam) – The Guam Environmental Protection Agency’s Board of Directors regularly scheduled meeting will take place on Thursday, July 24, 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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PUBLIC NOTICE: Seeking Public Comment on Proposed Onsite Wastewater Treatment and Disposal System Regulations

Pursuant to 5 GCA Ch 9, Sec 9301, Guam EPA issues this public notice to seek public comment on the Guam EPA’s proposed new and amended regulations of onsite wastewater treatment and disposal systems, in 22 GAR Div 2, Ch 12. This notice also serves to notify the general public that a public hearing will…
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Guam 2024 Annual State Public Water System Compliance Report Now Available

On June 25, 2025, the Guam Environmental Protection Agency (Guam EPA) submitted its 2024 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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Waste System Permit Application Update

Notice to the Public: Pursuant to Public Law 37-105, GEPA’s interim authority to issue construction and operating permits for Type 4 facilities and holding tanks expired on July 31, 2025. GEPA is unable to proceed with the review or approval of Waste Disposal System permit applications until regulations have been adopted.

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.

CLICK HERE TO LEARN MORE.

 

Report Violations Like Illegal Dumping

Keep our island CLEAN – Report illegal dumping!

CLICK HERE TO SUBMIT A BASIC REPORT

CLICK HERE TO SUBMIT PHOTOS & VIDEOS WITH YOUR REPORT – Google Sign-In Required

Permitting Tips Presentations: Contractors, Home Builders and Property Buyers

In case you missed our Construction & Industry Forum on March 29, 2023, you can click on the links below to access presentations about Guam EPA’s construction permitting process:

CLICK HERE FOR CONTRACTOR TIPS

CLICK HERE FOR HOME BUILDER AND PROPERTY BUYER TIPS

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.

 

Guam Business License & Permit Center Window Hours

Guam Business License and Permit Center Agency Window Hours:

Monday – Friday

8AM – 12PM • 1PM – 5PM

Permit Process Presentation – 2018 PDF

17-3304 Mariner Avenue Tiyan Barrigada, Guam 96913

One Stop Permit Window Hours: Mon-Fri: 8AM - 12PM • 1PM - 5PM

671.588.4751 671.588.4752

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