Public water system record
Shawnee Municipal Authority
Serves Shawnee, Pottawatomie County, OK · 29,990 people served
Federal records show 5 health-based violations and 3 monitoring/reporting issues for Shawnee Municipal Authority in the last ten years. The most serious issue in this window was a CARBON, TOTAL violation that EPA lists as archived, not resolved.
System profile
Source water
Surface water
ZIP
74801
EPA system ID
OK1020504
- Health-based violations, last 10 years
- 5
- Resolved
- 1
- Unresolved
- 0
- Archived by EPA
- 4
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 3
Key facts
- Shawnee Municipal Authority draws water from 3 surface water intakes.
- Most recent formal enforcement: compliance order (no penalty) by Oklahoma, November 2025.
- Record on file since 1984, with 61 health-based violations before October 19, 2016.
- Lead pipe inventory: 20 lead and 143 unknown out of 13,772 service lines.
Check whether Shawnee 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 |
|---|---|---|---|---|
|
CARBON, TOTAL
Treatment technique failure
|
210 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
CARBON, TOTAL
Treatment technique failure
|
210 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
CARBON, TOTAL
Treatment technique failure
|
210 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
CARBON, TOTAL
Treatment technique failure
|
210 | Jan 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 | Jun 1, 2020 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
CARBON, TOTAL
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Full record since 1984
EPA's records for Shawnee Municipal Authority go back to 1984. Before October 19, 2016 they list 61 health-based violations (61 resolved) and 11 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 8 | 3 |
| 2000s | 49 | 8 |
| 2010 to October 18, 2016 | 3 | 0 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 5 | 2 |
Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began August 2016, Resolved.
Show all 61 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Aug 1, 2016 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jul 1, 2015 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jun 1, 2015 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2008 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2008 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2008 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jan 1, 2008 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2007 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2004 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
May 1, 2004 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
May 1, 2004 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2004 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Apr 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2004 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jan 1, 2004 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2003 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2003 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2003 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2003 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2003 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2003 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2003 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2003 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Apr 1, 2003 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2003 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2003 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jan 1, 2003 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2002 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2002 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2002 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2002 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2002 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2002 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2001 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2001 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2001 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2001 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2000 | Resolved |
11 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Oklahoma regulators took 32 formal enforcement actions against Shawnee Municipal Authority between 1995 and 2025, filed as 34 records in EPA's data. The most recent was a compliance order (no penalty) in November 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 12, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): CARBON, TOTAL |
| Sep 4, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): CARBON, TOTAL |
| Jul 1, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): CARBON, TOTAL |
| Sep 10, 2020 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| Sep 23, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| Aug 19, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| Jan 27, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Nov 5, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Oct 10, 2008 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Mar 18, 2008 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Apr 17, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Mar 6, 2006 | Oklahoma | Compliance order (no penalty) | 33 violations (33 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Jan 3, 2006 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs) |
| Nov 16, 2005 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Mar 21, 2005 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): CARBON, TOTAL, Total Trihalomethanes (TTHMs) |
| Nov 16, 2004 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Sep 7, 2004 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Jul 14, 2004 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| May 25, 2004 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Mar 18, 2004 | Oklahoma | Compliance order with a penalty | 39 violations (39 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Mar 3, 2004 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): CARBON, TOTAL, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Nov 13, 2003 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Aug 12, 2003 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Total Trihalomethanes (TTHMs), CARBON, TOTAL, Haloacetic Acids (HAA5) |
| May 8, 2003 | Oklahoma | Compliance order with a penalty | 3 violations (3 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Feb 6, 2003 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Jan 23, 2003 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Oct 31, 2002 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jul 10, 2002 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Oct 8, 2001 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Surface Water Treatment Rule |
| Sep 18, 2001 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Surface Water Treatment Rule |
| Apr 15, 1999 | Oklahoma | Compliance order with a penalty | 8 violations (8 health-based): Total Trihalomethanes (TTHMs) |
| Jul 20, 1995 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
What the violations mean
CARBON, TOTAL
4 incidentsThe system did not complete a treatment step or action that federal rules require for CARBON, TOTAL (a treatment technique violation).
The utility had to notify customers about each of these violations.
Interim Enhanced Surface Water Treatment Rule
1 incidentThe 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
Where the water comes from
Shawnee Municipal Authority draws water from 3 surface water intakes. 2 other community water systems buy water from Shawnee Municipal Authority.
Community systems that buy water from it
- Meeker Public Works Authority Meeker, OK
- Pottawatomie Co Development Auth Shawnee, OK
Annual water quality report
Shawnee 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.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
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