Public water system record
Copan PWA
Serves Copan, Washington County, OK · 733 people served
Federal records show 41 health-based violations and 45 monitoring/reporting issues for Copan PWA in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Surface water
ZIP
74022
EPA system ID
OK1021417
- Health-based violations, last 10 years
- 41
- Resolved
- 4
- Unresolved
- 1
- Archived by EPA
- 36
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 45
Key facts
- Copan PWA draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.141 mg/L, federal limit 0.06 mg/L (2.4 times the limit), 2025.
- Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
- Record on file since 1993, with 21 health-based violations before October 19, 2016.
Check whether Copan PWA serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.141 mg/L, federal limit 0.06 mg/L (2.4 times the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.124 mg/L, federal limit 0.06 mg/L (2.1 times the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.118 mg/L, federal limit 0.06 mg/L (2 times the limit)
|
220 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.06 mg/L (1.8 times the limit)
|
220 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.113 mg/L, federal limit 0.06 mg/L (1.9 times the limit)
|
220 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.06 mg/L (1.8 times the limit)
|
220 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 |
Active
Enforcement action in place
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
220 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.078 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
220 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
220 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
220 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.107 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.099 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2023 | Resolved | Yes |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2023 | Resolved | Yes |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2021 | Resolved | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jul 1, 2019 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 30, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Mar 29, 2025 |
Active
Enforcement action in place
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2025 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 30, 2024 | Resolved |
|
Public Notice
OTHER
|
Dec 21, 2024 |
Active
Enforcement action in place
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Dec 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Nov 1, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Nov 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Nov 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2024 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 |
Active
Enforcement action in place
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 29, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2024 | Resolved |
|
Public Notice
OTHER
|
Sep 5, 2024 |
Active
Enforcement action in place
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2024 | Resolved |
|
Public Notice
OTHER
|
Jun 3, 2024 |
Active
Enforcement action in place
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 31, 2024 | Resolved |
|
Public Notice
OTHER
|
Mar 10, 2024 |
Active
Enforcement action in place
|
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2023 | Resolved |
|
Public Notice
OTHER
|
Nov 18, 2023 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2022 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
May 1, 2020 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2018 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
Full record since 1993
EPA's records for Copan PWA go back to 1993. Before October 19, 2016 they list 21 health-based violations (11 resolved, 10 archived by EPA without a recorded fix) and 23 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 13 | 7 |
| 2000s | 8 | 14 |
| 2010 to October 18, 2016 | 0 | 2 |
| October 19, 2016 to 2019 | 1 | 2 |
| 2020s | 40 | 43 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2008, Resolved.
Show all 21 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jul 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2007 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 1999 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1998 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 1995 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 1993 | Archived |
Enforcement actions
Oklahoma regulators and EPA took 29 formal enforcement actions against Copan PWA and issued 2 boil water orders between 1995 and 2026, filed as 32 records in EPA's data. The most recent was a compliance order (no penalty) in March 2026.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 31, 2026 | EPA | Compliance order (no penalty) | 2 violations (1 health-based): LEAD AND COPPER RULE REVISIONS |
| Jul 16, 2025 | Oklahoma | Compliance order (no penalty) | 10 violations (10 health-based): Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule |
| May 2, 2025 | Oklahoma | Compliance order (no penalty) | 34 violations: Public Notice, Interim Enhanced Surface Water Treatment Rule, Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Chlorine |
| Feb 25, 2025 | Oklahoma | Boil water order | 1 violation |
| May 16, 2024 | Oklahoma | Boil water order | 1 violation |
| May 13, 2024 | Oklahoma | Compliance order with a penalty | 29 violations (29 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), Surface Water Treatment Rule |
| May 3, 2024 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Feb 8, 2024 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Nov 15, 2023 | Oklahoma | Compliance order (no penalty) | 4 violations (4 health-based): Total Trihalomethanes (TTHMs) |
| Oct 18, 2023 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Interim Enhanced Surface Water Treatment Rule |
| Aug 25, 2021 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Nov 5, 2019 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| Oct 29, 2008 | Oklahoma | Compliance order with a penalty | 8 violations (8 health-based): Total Trihalomethanes (TTHMs) |
| Sep 25, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 5, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Mar 11, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Dec 8, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Oct 3, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 9, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jan 12, 2006 | Oklahoma | Compliance order with a penalty | 3 violations: Chlorine |
| Sep 7, 2005 | Oklahoma | Compliance order with a penalty | 2 violations: CARBON, TOTAL |
| Apr 15, 2005 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 15, 1999 | Oklahoma | Compliance order (no penalty) | 1 violation: Surface Water Treatment Rule |
| Dec 15, 1998 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Sep 16, 1998 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Aug 4, 1998 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Jul 16, 1998 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Jun 1, 1998 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Apr 16, 1998 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Jul 20, 1995 | Oklahoma | Compliance order (no penalty) | 1 violation: Total Coliform |
| May 19, 1995 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
Total Trihalomethanes (TTHMs)
16 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Haloacetic Acids (HAA5)
10 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Interim Enhanced Surface Water Treatment Rule
9 incidentsThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Surface Water Treatment Rule
5 incidentsThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Copan PWA draws water from 1 surface water intake. 2 other community water systems buy water from Copan PWA.
Community systems that buy water from it
- Osage Co RWD #20 (Hulah) Bartlesville, OK
- Washington Co RWD #7 Dewey, OK
Annual water quality report
Copan PWA must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Oklahoma.
Certified drinking water labs by state EPA guidance for private wells