Aunuu ASG

Compiled by PlainEnviro Editorial, Environmental Data Editorial Team · July 13, 2026

PWSID: AS9310751 · Pago Pago, AS · Serves 402 people

Health Violations

Aunuu ASG has 129 health-based violations out of 129 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served

402

Total Violations

129

Health Violations

129

Source Type

Groundwater

Aunuu ASG (PWSID AS9310751) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 402 people in Pago Pago, AS, and is subject to primacy enforcement by the American Samoa drinking-water program.

The system's federal compliance record contains 129 total violations, with 129 classified as health-based (MCL exceedances or treatment-technique failures). 5 distinct contaminants have been cited, including Total Trihalomethanes (TTHM), Haloacetic Acids (HAA5), Total Coliform (RTCR). Recorded violations span 2012–2024.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the American Samoa state drinking-water program's public portal.

System Details

EPA ID (PWSID): AS9310751
System Type: CWS
Water Source: Groundwater
Location: Pago Pago, AS
Population Served: 402
Health Violations: Yes (129)

What contaminants are in this water system?

Contaminant	Violations	Health-Based
Total Trihalomethanes (TTHM)	96	96
Haloacetic Acids (HAA5)	21	21
Total Coliform (RTCR)	6	6
E. coli	4	4
Combined Radium 226/228	2	2

Violation History (129)

Contaminant	Type	Health	Date	Enforcement
E. coli	MCL	Yes	Jul 1, 2024	9310751OX08212419758
E. coli	MCL	Yes	Jul 1, 2024	9310751OX08212419758
E. coli	MCL	Yes	Jul 1, 2024	9310751OX08212419758
E. coli	TT	Yes	Jul 1, 2024	9310751OX11262420262
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2021	-
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2021	-
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2021	9310751OX01262219740
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	9310751OX01262219739
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2020	-
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2020	-
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2020	9310751OX01262219738
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	-
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	-
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	9310751OX01262219729
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	-
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	-
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2019	9310751OX01262219728
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2019	-
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2019	-
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2019	9310751OX01262219726
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2019	9310751OX01262219727
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2019	-
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2019	-
Haloacetic Acids (HAA5)	MCL	Yes	Jan 1, 2019	9310751OX01262219720
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	9310751OX01262219721
Haloacetic Acids (HAA5)	MCL	Yes	Oct 1, 2018	-
Haloacetic Acids (HAA5)	MCL	Yes	Oct 1, 2018	-
Haloacetic Acids (HAA5)	MCL	Yes	Oct 1, 2018	9310751OX01141919718
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	-
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	-
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	9310751OX01141919719
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2018	-
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2018	-
Haloacetic Acids (HAA5)	MCL	Yes	Jul 1, 2018	9310751OX01141919714
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	9310751OX01141919712
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	9310751OX05031812093
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	9310751OX05031812093
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	9310751OX05031812093
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	9310751OX05031812092
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	9310751OX05031812092
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	9310751OX05031812092
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	9310751OX05031812090
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	9310751OX05031812090
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	9310751OX05031812090
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2017	9310751OX05031812088
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2017	9310751OX05031812088
Haloacetic Acids (HAA5)	MCL	Yes	Apr 1, 2017	9310751OX05031812088
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	9310751OX05031812089
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	9310751OX05031812089
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	9310751OX05031812089
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	9310751OX05031812091
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	9310751OX05031812091
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	9310751OX05031812091
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	9310751OX05031812087
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	9310751OX05031812087
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	9310751OX05031812087
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	9310751OX05031812086
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	9310751OX05031812086
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	9310751OX05031812086
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	9310751OX05031812085
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	9310751OX05031812085
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	9310751OX05031812085
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	9310751OX05031812084
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	9310751OX05031812084
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	9310751OX05031812084
Total Coliform (RTCR)	MCL	Yes	Dec 1, 2015	9310751OX01101610019
Total Coliform (RTCR)	MCL	Yes	Dec 1, 2015	9310751OX01101610019
Total Coliform (RTCR)	MCL	Yes	Dec 1, 2015	9310751OX01101610019
Total Coliform (RTCR)	MCL	Yes	Nov 1, 2015	9310751OX01101610018
Total Coliform (RTCR)	MCL	Yes	Nov 1, 2015	9310751OX01101610018
Total Coliform (RTCR)	MCL	Yes	Nov 1, 2015	9310751OX01101610018
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2015	9310751OX05031812083
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2015	9310751OX05031812083
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2015	9310751OX05031812083
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2015	9310751OX05031812083
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2015	9310751OX05031812082
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2015	9310751OX05031812082
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2015	9310751OX05031812082
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2015	9310751OX05031812082
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2015	9310751OX05031812081
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2015	9310751OX05031812081
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2015	9310751OX05031812081
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2015	9310751OX05031812080
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2015	9310751OX05031812080
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2015	9310751OX05031812080
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2015	9310751OX05031812080
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2014	9310751OX05031812079
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2014	9310751OX05031812079
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2014	9310751OX05031812079
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2014	9310751OX05031812079
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2014	9310751OX05031812078
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2014	9310751OX05031812078

Showing 100 of 129 violations.

Frequently Asked Questions

Is Aunuu ASG water safe to drink?

Aunuu ASG has 129 health-based violations out of 129 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses groundwater water as its source.

How many people does Aunuu ASG serve?

Aunuu ASG serves 402 people in Pago Pago, AS. It is classified as a CWS water system.

What violations does Aunuu ASG have?

Aunuu ASG has 129 total violations on record spanning 2012–2024. 129 are health-based violations involving contaminants exceeding EPA limits.

What contaminants have been found in Aunuu ASG water?

Violations have been recorded for 5 contaminants. The most frequent: Total Trihalomethanes (TTHM), Haloacetic Acids (HAA5), Total Coliform (RTCR).

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About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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System Details

What contaminants are in this water system?

Violation History (129)

Frequently Asked Questions

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About This Data

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