Total trihalomethanes (TTHM) above the legal limit in the period starting January 2026.
Serves about 350 people (232 connections) with surface water bought from Comanche Co RWD #4.
From EPA's record for OK2001609. PurityMap is independent of Indiahoma Public Works Authority.
Are you this utility? Correct this listing →
36 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jan–Mar 2026 | Total trihalomethanes (TTHM) | 0.17 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.172 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.186 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.187 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 0.185 mg/L | 0.080 mg/L | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 0.177 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2024 | Total trihalomethanes (TTHM) | 0.194 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 0.165 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2024 | Total trihalomethanes (TTHM) | 0.152 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2023 | Total trihalomethanes (TTHM) | 0.152 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2023 | Total trihalomethanes (TTHM) | 0.084 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2023 | Total trihalomethanes (TTHM) | 0.091 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2023 | Total trihalomethanes (TTHM) | 0.102 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2022 | Total trihalomethanes (TTHM) | 0.112 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2022 | Total trihalomethanes (TTHM) | 0.155 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2022 | Total trihalomethanes (TTHM) | 0.19 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2022 | Total trihalomethanes (TTHM) | 0.186 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2021 | Total trihalomethanes (TTHM) | 0.19 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2021 | Total trihalomethanes (TTHM) | 0.178 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 0.139 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2021 | Total trihalomethanes (TTHM) | 0.144 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2020 | Total trihalomethanes (TTHM) | 0.144 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2020 | Total trihalomethanes (TTHM) | 0.136 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2020 | Total trihalomethanes (TTHM) | 0.105 mg/L | 0.080 mg/L | Archived |
No lab results for other contaminants (like PFAS) are on file for this system. EPA required that testing from systems serving more than 3,300 people, plus a sample of smaller ones.
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Indiahoma Public Works Authority's phone number on EPA record is 580-246-3572. Its mailing address is Juanell Webster, Chairman, BOX 38, INDIAHOMA, OK 73552.
According to EPA's record, Indiahoma Public Works Authority uses surface water bought from Comanche Co RWD #4.
EPA's record shows 36 health-based violations for Indiahoma Public Works Authority in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting January 2026. EPA also lists 18 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Indiahoma Public Works Authority's latest lead and copper round, which ended in December 2024, was 1.87 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Indiahoma Public Works Authority. Its phone number on EPA record is 580-246-3572. Its mailing address on EPA record is Juanell Webster, Chairman, BOX 38, INDIAHOMA, OK 73552. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.