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Masefau ASG

AS — Community Water System — PWSID: AS9710855

System Information

PWSIDAS9710855
System NameMasefau ASG
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeState
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedDec 14, 2005
Last ReportedDec 19, 2025

Location & Contact

StateAS
CityPago Pago
ZIP Code96799
AddressP.O Box PPB
OrganizationAmerican Samoa Power Authority
Phone6846991234

Population & Service

Population Served457
Service Connections89

Drinking Water Violations (34)

This water system has 34 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
Apr 1, 2025 Jun 30, 2025 Asbestos MR No Yes — 7 MFL — Resolved Jun 30, 2025 Inorganic Chemicals
Jan 1, 2025 Mar 31, 2025 Asbestos MR No Yes — 7 MFL — Resolved Mar 31, 2025 Inorganic Chemicals
Dec 1, 2023 — E. COLI MR No Yes — — — Resolved Feb 5, 2024 Ground Water Rule
Jan 1, 2023 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Nitrate MR No Yes — 10 mg/L — Archived Dec 31, 2023 Nitrate Rule
Jan 1, 2023 Dec 31, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jul 1, 2019 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jan 1, 2017 Dec 31, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Dec 31, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Dec 31, 2017 Nitrate MR No Yes — 10 mg/L — Archived Dec 31, 2017 Nitrate Rule
Jan 1, 2017 Dec 31, 2017 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Dec 31, 2017 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Dec 31, 2016 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2016 Dec 31, 2016 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2016 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Jun 30, 2014 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2014 Radionuclides and Revised Rad Rule
Jan 1, 2014 — Lead and Copper Rule MR No No — TT — Resolved Dec 8, 2017 Lead and Copper Rule
Jan 1, 2014 Mar 31, 2014 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2014 Radionuclides and Revised Rad Rule
Jul 1, 2013 Sep 30, 2013 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2013 Radionuclides and Revised Rad Rule
Apr 1, 2013 Jun 30, 2013 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2013 Radionuclides and Revised Rad Rule
Mar 1, 2013 — E. COLI MR No Yes — — — Resolved Sep 6, 2013 Ground Water Rule
Feb 1, 2013 Feb 28, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2013 Total Coliform Rule
Jan 1, 2013 Mar 31, 2013 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2013 Radionuclides and Revised Rad Rule
Oct 1, 2012 Dec 31, 2012 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2012 Radionuclides and Revised Rad Rule
Jul 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Sep 5, 2013 Lead and Copper Rule
Apr 1, 2012 Jun 30, 2012 Gross Beta Particle Activity MR No Yes — 4 mrem/yr — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 — Lead and Copper Rule MR No No — TT — Resolved Sep 11, 2013 Lead and Copper Rule
Feb 1, 2011 Feb 28, 2011 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Feb 28, 2011 Total Coliform Rule
— — — 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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