REQUEST FOR PUBLIC INVOLVEMENT — Triennial Review of Guam Water Quality Standards
The Guam Environmental Protection Agency (Guam EPA) needs your help in reviewing Guam’s
Water 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 to review applicable
WQS and, as appropriate, modify and adopt WQS.
• With public input, Guam EPA will review existing water quality standards and identify additions
and/or revisions that are necessary or appropriate to make sure Guam WQS meet
requirements of the CWA and the needs of the island.
Guam EPA intends to revise Guam’s WQS in a variety of ways including:
• additions and revisions to current water quality criteria
• adopting implementation procedures or other general policies.
Resource Documents. The Guam WQS, Guam EPA’s general list of triennial review topics, and other pertinent resource documents can be found at https://epa.guam.gov/emas/
WHERE TO SUBMIT YOUR COMMENTS
Mail or Hand Delivery:
Triennial Review Recommendations
Attn: Guam EPA EMAS Administrator
17-3304 Mariner Avenue
Tiyan, Barrigada, Guam 96913
Deadline: Postmarked by Tuesday, March 31, 2026
Email: elizabeth.degrange@epa.guam.gov
cc: margaret.aguilar@epa.guam.gov
Subject: 2026 GWQS Triennial Review
Deadline: COB, Tuesday, March 31, 2026
Email inquiries to margaret.aguilar@epa.guam.gov or call (671)588-4787.
PUBLIC MEETING SCHEDULE WILL BE ANNOUNCED
