INDIAHOMA PUBLIC WORKS AUTHORITY

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

PWSID: OK2001609 · Indiahoma, OK · Serves 350 people

Health Violations

INDIAHOMA PUBLIC WORKS AUTHORITY has 96 health-based violations out of 96 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served

350

Total Violations

Health Violations

Source Type

Surface Water

INDIAHOMA PUBLIC WORKS AUTHORITY (PWSID OK2001609) is a cws water system drawing from a surface water source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 350 people in Indiahoma, OK, and is subject to primacy enforcement by the Oklahoma drinking-water program.

The system's federal compliance record contains 96 total violations, with 96 classified as health-based (MCL exceedances or treatment-technique failures). 4 distinct contaminants have been cited, including Total Trihalomethanes (TTHM), Gross Alpha, Combined Radium 226/228. Recorded violations span 1987–2025.

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 Oklahoma state drinking-water program's public portal.

System Details

EPA ID (PWSID): OK2001609
System Type: CWS
Water Source: Surface Water
Location: Indiahoma, OK
Population Served: 350
Health Violations: Yes (96)

What contaminants are in this water system?

Contaminant	Violations	Health-Based
Total Trihalomethanes (TTHM)	93	93
Gross Alpha	1	1
Combined Radium 226/228	1	1
Total Coliform	1	1

Violation History (96)

Contaminant	Type	Health	Date	Enforcement
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2025	1623
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	1615
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2025	1622
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2025	1609
Gross Alpha	TT	Yes	Oct 17, 2024	1618
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2024	1600
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2024	1595
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2024	1594
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2024	1595
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2024	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2024	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2024	1592
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2024	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2024	1584
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2024	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2024	1584
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2023	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2023	1575
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2023	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2023	1575
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	1562
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	1568
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2023	1568
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	1560
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	1560
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2023	-
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	1559
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	1559
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	1461
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	1553
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2023	1559
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	1544
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	1544
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	1543
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2022	1543
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	1543
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	1543
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2022	1543
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2022	1539
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2022	1539
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2022	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1536
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2021	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1533
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2021	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1528
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2021	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1525
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2021	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1516
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2020	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1513
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2020	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1511
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2020	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1504
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2019	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1499
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2019	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	1496
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2018	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	1493
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2018	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	1489
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2018	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	1490
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2018	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	1484
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2017	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	1481
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2017	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	1478
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2017	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	1471
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2017	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	1471
Total Trihalomethanes (TTHM)	MCL	Yes	Oct 1, 2016	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	1467
Total Trihalomethanes (TTHM)	MCL	Yes	Jul 1, 2016	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	1464
Total Trihalomethanes (TTHM)	MCL	Yes	Apr 1, 2016	1555
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	1464
Total Trihalomethanes (TTHM)	MCL	Yes	Jan 1, 2016	1555
Combined Radium 226/228	TT	Yes	Oct 1, 2012	1453
Total Coliform	MCL	Yes	Sep 1, 1987	1458

Frequently Asked Questions

Is INDIAHOMA PUBLIC WORKS AUTHORITY water safe to drink?

INDIAHOMA PUBLIC WORKS AUTHORITY has 96 health-based violations out of 96 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses surface water water as its source.

How many people does INDIAHOMA PUBLIC WORKS AUTHORITY serve?

INDIAHOMA PUBLIC WORKS AUTHORITY serves 350 people in Indiahoma, OK. It is classified as a CWS water system.

What violations does INDIAHOMA PUBLIC WORKS AUTHORITY have?

INDIAHOMA PUBLIC WORKS AUTHORITY has 96 total violations on record spanning 1987–2025. 96 are health-based violations involving contaminants exceeding EPA limits.

What contaminants have been found in INDIAHOMA PUBLIC WORKS AUTHORITY water?

Violations have been recorded for 4 contaminants. The most frequent: Total Trihalomethanes (TTHM), Gross Alpha, Combined Radium 226/228.

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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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