Indiahoma, OK Tap Water Quality 2026

Water quality report for Indiahoma, OK — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Indiahoma's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Indiahoma Public Works Authority PWSID: OK2001609 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 1.87 ppb, 12% of the action level and no violations are open. PFAS has never been sampled at this system.

Indiahoma earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 1.87 ppb — 12% of the federal action level

PFAS never sampled at this system

64 violations since 2015, 43 health-based

No violations currently open

Indiahoma's lead level vs. all Oklahoma community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: 1.87 ppb — 12% of the federal action level

✓ Lower lead than 54% of Oklahoma utilities

Population Served

275

~232 connections

Water Source

Surface water

Purchased from another system — SDWIS source code SWP

Active Violations

64 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

12% of EPA action level

1.87 ppb

Action level: 15 ppb

Copper (Cu)

90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.

106.2% of EPA action level

1,380 ppb

Action level: 1,300 ppb

The 90th-percentile lead result is 1.87 ppb, 12% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2026	Resolved
TTHM	MCL EXCEEDANCE	0.17 MG/L	0.080 mg/L	2026	Archived
TTHM	MCL EXCEEDANCE	0.172 MG/L	0.080 mg/L	2025	Archived
TTHM	MCL EXCEEDANCE	0.186 MG/L	0.080 mg/L	2025	Archived
TTHM	MCL EXCEEDANCE	0.187 MG/L	0.080 mg/L	2025	Archived
TTHM	MCL EXCEEDANCE	0.185 MG/L	0.080 mg/L	2025	Archived
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2024	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2024	Resolved
LEAD AND COPPER RULE REVISIONS	TREATMENT TECHNIQUE	—	—	2024	Resolved
LEAD AND COPPER RULE REVISIONS	REPORTING FAILURE	—	—	2024	Resolved
TTHM	MCL EXCEEDANCE	0.177 MG/L	0.080 mg/L	2024	Archived
E. COLI	MONITORING AND REPORTING	—	0	2024	Unaddressed
TTHM	MCL EXCEEDANCE	0.194 MG/L	0.080 mg/L	2024	Archived
TTHM	MCL EXCEEDANCE	0.165 MG/L	0.080 mg/L	2024	Archived
TTHM	MCL EXCEEDANCE	0.152 MG/L	0.080 mg/L	2024	Archived
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2023	Resolved
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2023	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2023	Resolved
TTHM	MCL EXCEEDANCE	0.152 MG/L	0.080 mg/L	2023	Archived
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.084 MG/L	0.080 mg/L	2023	Archived
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2023	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2023	Resolved
TTHM	MCL EXCEEDANCE	0.091 MG/L	0.080 mg/L	2023	Archived
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2023	Resolved
TTHM	MCL EXCEEDANCE	0.102 MG/L	0.080 mg/L	2023	Archived
TTHM	MCL EXCEEDANCE	0.112 MG/L	0.080 mg/L	2022	Archived
Chlorine	MONITORING AND REPORTING	—	4.0 mg/L	2022	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2022	Resolved
Revised Total Coliform Rule	MONITORING FAILURE	—	—	2022	Resolved
TTHM	MCL EXCEEDANCE	0.155 MG/L	0.080 mg/L	2022	Archived
TTHM	MCL EXCEEDANCE	0.19 MG/L	0.080 mg/L	2022	Archived
TTHM	MCL EXCEEDANCE	0.186 MG/L	0.080 mg/L	2022	Archived
TTHM	MCL EXCEEDANCE	0.19 MG/L	0.080 mg/L	2021	Archived
TTHM	MCL EXCEEDANCE	0.178 MG/L	0.080 mg/L	2021	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2021	Resolved
TTHM	MCL EXCEEDANCE	0.139 MG/L	0.080 mg/L	2021	Archived
TTHM	MCL EXCEEDANCE	0.144 MG/L	0.080 mg/L	2021	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.144 MG/L	0.080 mg/L	2020	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2020	Resolved
TTHM	MCL EXCEEDANCE	0.136 MG/L	0.080 mg/L	2020	Archived
TTHM	MCL EXCEEDANCE	0.105 MG/L	0.080 mg/L	2020	Archived
TTHM	MCL EXCEEDANCE	0.193 MG/L	0.080 mg/L	2019	Archived
TTHM	MCL EXCEEDANCE	0.14 MG/L	0.080 mg/L	2019	Archived
TTHM	MCL EXCEEDANCE	0.176 MG/L	0.080 mg/L	2018	Archived
TTHM	MCL EXCEEDANCE	0.176 MG/L	0.080 mg/L	2018	Archived
TTHM	MCL EXCEEDANCE	0.179 MG/L	0.080 mg/L	2018	Archived
TTHM	MCL EXCEEDANCE	0.175 MG/L	0.080 mg/L	2018	Archived
TTHM	MCL EXCEEDANCE	0.172 MG/L	0.080 mg/L	2017	Archived
TTHM	MCL EXCEEDANCE	0.155 MG/L	0.080 mg/L	2017	Archived
TTHM	MCL EXCEEDANCE	0.142 MG/L	0.080 mg/L	2017	Archived
TTHM	MCL EXCEEDANCE	0.149 MG/L	0.080 mg/L	2017	Archived
TTHM	MCL EXCEEDANCE	0.144 MG/L	0.080 mg/L	2016	Archived
TTHM	MCL EXCEEDANCE	0.155 MG/L	0.080 mg/L	2016	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2016	Resolved
Total Haloacetic Acids (HAA5)	MONITORING AND REPORTING	—	0.060 mg/L	2016	Resolved
TTHM	MCL EXCEEDANCE	0.182 MG/L	0.080 mg/L	2016	Archived
TTHM	MCL EXCEEDANCE	0.178 MG/L	0.080 mg/L	2016	Archived
TTHM	MCL EXCEEDANCE	0.186 MG/L	0.080 mg/L	2015	Archived
TTHM	MCL EXCEEDANCE	0.222 MG/L	0.080 mg/L	2015	Archived
TTHM	MONITORING AND REPORTING	—	0.080 mg/L	2015	Resolved
TTHM	MCL EXCEEDANCE	0.201 MG/L	0.080 mg/L	2015	Archived
TTHM	MCL EXCEEDANCE	0.198 MG/L	0.080 mg/L	2015	Archived

Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

64 violations are on record since 2015, of which 43 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Indiahoma Public Works Authority

PWSID OK2001609

Water source Surface water — Purchased from another system — SDWIS source code SWP

Population served 275

Service connections 232

Systems serving this area 2

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Indiahoma tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 1.87 ppb, 12% of the action level.

Does Indiahoma water have PFAS? ▼

This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.

Who supplies water to Indiahoma? ▼

Indiahoma Public Works Authority (PWSID OK2001609), one of 2 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP

When was this system last inspected? ▼

It was last inspected on 2025-07-28. Inspectors recorded 2 significant deficiencies.

What Should Indiahoma Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

Check for a lead service line

Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.

Flush before drinking

If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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