Total trihalomethanes (TTHM) above the legal limit in the period starting October 2025; 1 open health-based violation on EPA record.
Serves about 733 people (403 connections) with surface water from its own intake.
From EPA's record for OK1021417. PurityMap is independent of Copan PWA.
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47 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.088 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Total trihalomethanes (TTHM) | 0.107 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2025 | Haloacetic acids (HAA5) | 0.135 mg/L | 0.060 mg/L | Archived |
| Oct–Dec 2025 | Haloacetic acids (HAA5) | 0.118 mg/L | 0.060 mg/L | Archived |
| From August 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From July 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.09 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.11 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2025 | Haloacetic acids (HAA5) | 0.141 mg/L | 0.060 mg/L | Archived |
| Jul–Sep 2025 | Haloacetic acids (HAA5) | 0.124 mg/L | 0.060 mg/L | Archived |
| From May 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From May 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From May 2025 | Surface Water Treatment Rule | – | – | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.099 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Haloacetic acids (HAA5) | 0.118 mg/L | 0.060 mg/L | Archived |
| Apr–Jun 2025 | Haloacetic acids (HAA5) | 0.105 mg/L | 0.060 mg/L | Archived |
| From April 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From April 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From April 2025 | Surface Water Treatment Rule | – | – | Archived |
| From April 2025 | Surface Water Treatment Rule | – | – | Archived |
| From March 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From March 2025 | Interim Enhanced Surface Water Treatment Rule | – | – | Archived |
| From March 2025 | Surface Water Treatment Rule | – | – | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 0.1 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2025 | Haloacetic acids (HAA5) | 0.113 mg/L | 0.060 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.
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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.
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Follow this water →Copan PWA's phone number on EPA record is 918-532-4114. Its mailing address is Eric Mumma, Mayor, P.O. BOX 219, COPAN, OK 74022.
According to EPA's record, Copan PWA uses surface water from its own intake.
EPA's record shows 47 health-based violations for Copan PWA in the 10 years to July 9, 2026. Total trihalomethanes (TTHM) were above the legal limit in the period starting October 2025. EPA's record also shows 1 open health-based violation. EPA also lists 74 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Copan PWA's latest lead and copper round, which ended in December 2025, was 2.3 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Copan PWA. Its phone number on EPA record is 918-532-4114. Its mailing address on EPA record is Eric Mumma, Mayor, P.O. BOX 219, COPAN, OK 74022. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.