Public water system record
Piedmont Municipal Authority
Serves Piedmont, Canadian County, OK · 7,542 people served
Federal records show 4 health-based violations and 58 monitoring/reporting issues for Piedmont Municipal Authority in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Purchased surface water
ZIP
73078
EPA system ID
OK2000909
- Health-based violations, last 10 years
- 4
- Resolved
- 4
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 58
Key facts
- Piedmont Municipal Authority draws water from 2 wells.
- Highest measured level in the last 10 years: Gross Alpha, Excl. Radon and U, 21 pCi/L, federal limit 15 pCi/L (1.4 times the limit), 2023.
- Most recent formal enforcement: compliance order (no penalty) by Oklahoma, September 2024.
- Record on file since 1979, with 28 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 1,204 unknown out of 2,951 service lines.
Check whether Piedmont Municipal Authority 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 18 pCi/L, federal limit 15 pCi/L (1.2 times the limit)
|
340 | Jan 1, 2024 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 16 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
340 | Oct 1, 2023 | Resolved | No |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 21 pCi/L, federal limit 15 pCi/L (1.4 times the limit)
|
340 | Jul 1, 2023 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Gross Beta Particle Activity
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Gross Beta Particle Activity
Monitoring and reporting
|
Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Aug 1, 2024 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 1, 2023 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
E. coli
Monitoring and reporting
|
May 5, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2014 | Resolved |
Full record since 1979
EPA's records for Piedmont Municipal Authority go back to 1979. Before October 19, 2016 they list 28 health-based violations (25 resolved, 3 archived by EPA without a recorded fix) and 34 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 2 | 0 |
| 1980s | 4 | 0 |
| 1990s | 4 | 4 |
| 2000s | 10 | 4 |
| 2010 to October 18, 2016 | 8 | 26 |
| October 19, 2016 to 2019 | 0 | 6 |
| 2020s | 4 | 31 |
Most recent health-based violation before October 19, 2016: Gross Alpha, Excl. Radon and U, began April 2016, Resolved.
Show all 28 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 28 pCi/L, federal limit 15 pCi/L (1.9 times the limit)
|
Apr 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 96 µg/L, federal limit 30 µg/L (3.2 times the limit)
|
Apr 1, 2016 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 28 pCi/L, federal limit 15 pCi/L (1.9 times the limit)
|
Jan 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 96 µg/L, federal limit 30 µg/L (3.2 times the limit)
|
Jan 1, 2016 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 57 pCi/L, federal limit 15 pCi/L (3.8 times the limit)
|
Oct 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 96 µg/L, federal limit 30 µg/L (3.2 times the limit)
|
Oct 1, 2015 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 57 pCi/L, federal limit 15 pCi/L (3.8 times the limit)
|
Jul 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 96 µg/L, federal limit 30 µg/L (3.2 times the limit)
|
Jul 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 48 µg/L, federal limit 30 µg/L (1.6 times the limit)
|
Oct 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 116 µg/L, federal limit 30 µg/L (3.9 times the limit)
|
Jul 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 148 µg/L, federal limit 30 µg/L (4.9 times the limit)
|
Apr 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 218 µg/L, federal limit 30 µg/L (7.3 times the limit)
|
Jan 1, 2009 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 233 µg/L, federal limit 30 µg/L (7.8 times the limit)
|
Oct 1, 2008 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 97 µg/L, federal limit 30 µg/L (3.2 times the limit)
|
Oct 1, 2007 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 63 µg/L, federal limit 30 µg/L (2.1 times the limit)
|
Oct 1, 2005 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 82 µg/L, federal limit 30 µg/L (2.7 times the limit)
|
Oct 1, 2005 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 17 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
Oct 1, 2005 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 17 pCi/L, federal limit 15 pCi/L (1.1 times the limit)
|
Oct 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1993 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Nov 1, 1991 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 1991 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1991 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Mar 22, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Mar 22, 1984 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Mar 1, 1984 | Archived |
|
Selenium
Contaminant limit exceeded
|
Mar 1, 1984 | Resolved |
|
Selenium
Contaminant limit exceeded
|
May 25, 1979 | Resolved |
|
Selenium
Contaminant limit exceeded
|
May 25, 1979 | Archived |
Enforcement actions
Oklahoma regulators took 8 formal enforcement actions against Piedmont Municipal Authority and issued 1 boil water order between 1986 and 2024. The most recent was a compliance order (no penalty) in September 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 17, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Aug 23, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| May 28, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Gross Alpha, Excl. Radon and U |
| Aug 16, 2016 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Combined Uranium, Gross Alpha, Excl. Radon and U |
| Mar 18, 2016 | Oklahoma | Compliance order with a penalty | 6 violations (6 health-based): Combined Uranium, Gross Alpha, Excl. Radon and U |
| Nov 5, 2009 | Oklahoma | Compliance order with a penalty | 10 violations (10 health-based): Gross Alpha, Excl. Radon and U, Combined Uranium |
| Jan 27, 1992 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Dec 18, 1991 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Sep 30, 1986 | Oklahoma | Boil water order | 1 violation |
What the violations mean
Gross Alpha, Excl. Radon and U
3 incidentsTest results for Gross Alpha, Excl. Radon and U were above the federal limit (a maximum contaminant level 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
Piedmont Municipal Authority draws water from 2 wells. It also has a part-time connection to Oklahoma City. 1 other community water system buys water from Piedmont Municipal Authority.
Emergency or part-time connections to
- Oklahoma City Oklahoma City, OK
Community systems that buy water from it
- Gordon's Hollow HOA Oklahoma City, OK
Annual water quality report
Piedmont Municipal Authority 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