GWA NORTHERN WATER SYSTEM

GU — Community Water System — PWSID: GU0000006

System Information

PWSIDGU0000006
System NameGWA NORTHERN WATER SYSTEM
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeState
EPA Region09
Serves SchoolNo
WholesalerYes
First ReportedMar 10, 1980
Last ReportedMar 30, 2026

Location & Contact

StateGU
CityMANGILAO
ZIP Code96913
AddressGloria B. Nelson Public Service Building
OrganizationBORDALLO, MIGUEL
Phone671-300-6845

Population & Service

Population Served139,207
Service Connections39,541

Drinking Water Violations (30)

This water system has 30 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jan 29, 1985 Feb 28, 1985 MCL Yes No .035 0.002 mg/L .002 Archived Feb 28, 1985
Jan 29, 1985 Feb 28, 1985 MCL Yes No .035 0.002 mg/L .002 Archived Feb 28, 1985
Jan 10, 1985 Feb 9, 1985 MCL Yes No .004 0.002 mg/L .002 Archived Feb 9, 1985
Jan 10, 1985 Feb 9, 1985 MCL Yes No .004 0.002 mg/L .002 Archived Feb 9, 1985
Jan 7, 1985 Feb 6, 1985 MCL Yes No 46 0.002 mg/L .002 Archived Feb 6, 1985
Jan 7, 1985 Feb 6, 1985 MCL Yes No 46 0.002 mg/L .002 Archived Feb 6, 1985
Jun 10, 1981 Jul 9, 1981 Other No No Archived Jul 9, 1981
May 10, 1981 Jun 9, 1981 Other No No Archived Jun 9, 1981
Mar 14, 1981 Apr 13, 1981 Other No No Archived Apr 13, 1981
Feb 10, 1981 Mar 9, 1981 Other No No Archived Mar 9, 1981
Jan 10, 1981 Feb 9, 1981 Other No No Archived Feb 9, 1981
Jan 10, 1981 Feb 9, 1981 Other No No Archived Feb 9, 1981
Sep 9, 1980 Oct 8, 1980 Other No No Archived Oct 8, 1980
Aug 14, 1980 Sep 13, 1980 Other No No Archived Sep 13, 1980
Jul 10, 1980 Aug 9, 1980 Other No No Archived Aug 9, 1980
May 14, 1980 Jun 13, 1980 Other No No Archived Jun 13, 1980
Dec 14, 1979 Jan 13, 1980 Other No No Archived Jan 13, 1980
Nov 14, 1979 Dec 13, 1979 Other No No Archived Dec 13, 1979
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No
No No

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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