World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in United States · Guam

6 inventory records · HydroWASTE v1.0 / United States

Data years: 2012. The inventory date does not establish current operation.

HydroWASTE is the available primary source for Puerto Rico, Guam and the US Virgin Islands: reported or estimated population served. It is not added to EPA. The US regulatory reference does not establish applicability to an individual plant.

6 results

Name	Native size	Year
AGANA DISTRICT WWTFHW:39740	79,386 population served	2012
NORTHERN DISTRICT WWTFHW:39741	71,250 population served	2012
AGAT DISTRICT WWTFHW:39739	13,656 population served	2012
TALAFOFO DISTRICT WWTFHW:39743	3,999 population served	2012
UMATAC MERIZO WWTFHW:39744	3,508 population served	2012
INARAJAN DISTRICT WWTFHW:39742	3,010 population served	2012

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

Permit identifier and permitting authority: EPA or an authorized state.
Outfall and receiving water; sewer connections follow a different control route.
Current permit conditions, limits and dated measurements; these are not included in CWNS.

US EPA · NPDES Permit Basics

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.