Public water system record
Mustang
Serves Oklahoma City and Mustang, Canadian County and Cleveland County, OK · 18,576 people served
Federal records show 1 health-based violation and 10 monitoring/reporting issues for Mustang in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 10
Key facts
- Mustang draws water from 11 wells.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, June 2014.
- Record on file since 1988, with 8 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 249 unknown out of 8,065 service lines.
Check whether Mustang 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 |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Active |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
Full record since 1988
EPA's records for Mustang go back to 1988. Before October 19, 2016 they list 8 health-based violations (8 resolved) and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 0 |
| 1990s | 1 | 2 |
| 2000s | 0 | 2 |
| 2010 to October 18, 2016 | 6 | 5 |
| 2020s | 1 | 10 |
Most recent health-based violation before October 19, 2016: Arsenic, began January 2014, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
Oct 1, 2013 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2012 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2011 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1995 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Mar 1, 1988 | Resolved |
Enforcement actions
Oklahoma regulators took 2 formal enforcement actions against Mustang and issued 1 boil water order between 1993 and 2014. The most recent was a compliance order with a penalty in June 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 2, 2014 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Arsenic |
| Jun 25, 2011 | Oklahoma | Boil water order | 1 violation (1 health-based): Total Coliform |
| Jan 7, 1993 | Oklahoma | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
What the violations mean
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
Mustang draws water from 11 wells. It also buys water from Oklahoma City.
Buys water from
- Oklahoma City Oklahoma City, OK
Annual water quality report
Mustang 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