Public Water Partners

MANGILAO, GU · Guam County

GWA CENTRAL WATER SYSTEM Water System

Consumer Confidence Report status

GWA CENTRAL WATER SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for GWA CENTRAL WATER SYSTEM.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Guam’s official records. Always confirm current status with Guam before making decisions based on this information.

System facts

System ID (PWSID)
GU0000003
System type
Community Water System
Population served
21,398
Service connections
3,295
Ownership
state government
Water source
surface water (rivers, lakes, or reservoirs)

GWA CENTRAL WATER SYSTEM serves 21,398 people from surface water, placing it in the 10,001 to 100,000 people size category.

As of August 1, 2026, its federal record holds 8 entries between 2010 and 2012, all of which EPA lists as closed. Nothing has been added since 2012.

None of the 8 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Public Notice Rule and Revised PN Rule.

Violation history

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    January 1, 2012 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    October 1, 2011 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    July 1, 2011 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    April 1, 2011 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    January 1, 2011 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    October 1, 2010 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    July 1, 2010 – May 28, 2014

    Resolved

  • Public Notification Violation for NPDWR Violation

    —

    Public Notice

    April 1, 2010 – May 28, 2014

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

Common questions

Is GWA CENTRAL WATER SYSTEM required to publish a Consumer Confidence Report?

Yes. GWA CENTRAL WATER SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is GWA CENTRAL WATER SYSTEM’s next Consumer Confidence Report due?

GWA CENTRAL WATER SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does GWA CENTRAL WATER SYSTEM have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for GWA CENTRAL WATER SYSTEM.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

BORDALLO, MIGUEL

671-300-6845

MANGILAO, GU 96913