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Ofu - Olosega ASG

AS — Community Water System — PWSID: AS9430546

System Information

PWSIDAS9430546
System NameOfu - Olosega ASG
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeState
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedJan 23, 1981
Last ReportedDec 19, 2025

Location & Contact

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

Population & Service

Population Served270
Service Connections90

Drinking Water Violations (295)

This water system has 295 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
Jul 1, 2025 Sep 30, 2025 Asbestos MR No Yes — 7 MFL — Archived Sep 30, 2025 Inorganic Chemicals
Apr 1, 2025 Jun 30, 2025 Asbestos MR No Yes — 7 MFL — Archived Jun 30, 2025 Inorganic Chemicals
Jan 1, 2025 Dec 31, 2025 TTHM MR No Yes — 0.080 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Mar 31, 2025 Asbestos MR No Yes — 7 MFL — Archived Mar 31, 2025 Inorganic Chemicals
Jan 1, 2025 Mar 31, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2025 Dec 31, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Unaddressed — Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jun 1, 2024 — Public Notice Other No No — — — Resolved Aug 15, 2024 Public Notice Rule and Revised PN Rule
Jun 1, 2024 — Revised Total Coliform Rule TT Yes No — — — Resolved Aug 15, 2024 Revised Total Coliform Rule
Jun 1, 2024 — Public Notice Other No No — — — Resolved Aug 15, 2024 Public Notice Rule and Revised PN Rule
Jun 1, 2024 — Public Notice Other No No — — — Resolved Jul 24, 2024 Public Notice Rule and Revised PN Rule
Apr 1, 2024 Jun 30, 2024 Chlorine MR No Yes — 4.0 mg/L — Archived Jun 30, 2024 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Archived Mar 31, 2024 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Archived Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Chlorine MR No Yes — 4.0 mg/L — Archived Dec 31, 2023 Stage 1 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 Mar 31, 2023 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Archived Mar 31, 2023 Radionuclides and Revised Rad 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
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
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jul 1, 2022 Sep 30, 2022 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Archived Sep 30, 2022 Radionuclides and Revised Rad Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jul 1, 2021 Sep 30, 2021 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2021 Radionuclides and Revised Rad Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jun 24, 2025 Consumer Confidence Rule
Jan 1, 2021 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
Jan 1, 2021 Dec 31, 2023 TTHM MR No Yes — 0.080 mg/L — Archived Dec 31, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2020 Apr 30, 2020 Revised Total Coliform Rule MON No Yes — — — Resolved Oct 6, 2015 Revised Total Coliform Rule
Apr 1, 2020 Jun 30, 2020 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2020 Radionuclides and Revised Rad Rule
Jul 1, 2019 — 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
Jan 1, 2019 Mar 31, 2019 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2019 Radionuclides and Revised Rad Rule
Jul 1, 2018 — 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
Jul 1, 2018 Sep 30, 2018 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2018 Radionuclides and Revised Rad Rule
Apr 1, 2018 Jun 30, 2018 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2018 Radionuclides and Revised Rad Rule
Jan 1, 2018 Mar 31, 2018 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2018 Radionuclides and Revised Rad Rule
Dec 1, 2017 Dec 31, 2017 Revised Total Coliform Rule MON No Yes — — — Resolved Dec 31, 2017 Revised Total Coliform Rule
Nov 1, 2017 — E. COLI MR No Yes — — — Resolved Feb 15, 2018 Ground Water Rule
Oct 1, 2017 Dec 31, 2017 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2017 Radionuclides and Revised Rad Rule
Jul 1, 2017 Sep 30, 2017 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2017 Radionuclides and Revised Rad 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 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Mar 31, 2017 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Mar 31, 2017 Radionuclides and Revised Rad 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 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2016 Dec 31, 2016 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Dec 31, 2016 Radionuclides and Revised Rad Rule
Jul 1, 2016 — E. COLI MR No Yes — — — Resolved Oct 21, 2016 Ground Water Rule
Jul 1, 2016 Sep 30, 2016 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Sep 30, 2016 Radionuclides and Revised Rad Rule
Apr 1, 2016 Jun 30, 2016 Combined Radium (-226 and -228) MR No Yes — 5 pCi/L — Resolved Jun 30, 2016 Radionuclides and Revised Rad Rule

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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