Public water system record
Apache
Serves Apache, Caddo County, OK · 1,521 people served
Federal records show 6 health-based violations and 35 monitoring/reporting issues for Apache in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 6
- Resolved
- 3
- Unresolved
- 1
- Archived by EPA
- 2
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 35
Key facts
- Apache draws water from 3 wells.
- Highest measured level in the last 10 years: Combined Uranium, 31 µg/L, federal limit 30 µg/L (at or just above the limit), 2022.
- Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
- Record on file since 1995, with 29 health-based violations before October 19, 2016.
Check whether Apache 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 |
|---|---|---|---|---|
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 |
Active
Enforcement action in place
|
No |
|
Combined Uranium
Contaminant limit exceeded
Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)
|
340 | Jul 1, 2022 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Apr 1, 2017 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2016 | Resolved | Yes |
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
|
Apr 1, 2025 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 |
Active
Enforcement action in place
|
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2024 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Nitrite
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
E. coli
Monitoring and reporting
|
Dec 5, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Jul 5, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
Full record since 1995
EPA's records for Apache go back to 1995. Before October 19, 2016 they list 29 health-based violations (28 resolved, 1 archived by EPA without a recorded fix) and 14 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 6 | 1 |
| 2000s | 6 | 8 |
| 2010 to October 18, 2016 | 17 | 5 |
| October 19, 2016 to 2019 | 1 | 8 |
| 2020s | 4 | 27 |
Most recent health-based violation before October 19, 2016: Nitrate-Nitrite (acute), began October 2016, Resolved.
Show all 29 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2016 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 22 pCi/L, federal limit 15 pCi/L (1.5 times the limit)
|
Apr 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 37 µg/L, federal limit 30 µg/L (1.2 times the limit)
|
Apr 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 44 µg/L, federal limit 30 µg/L (1.5 times the limit)
|
Jan 1, 2016 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 29 pCi/L, federal limit 15 pCi/L (1.9 times the limit)
|
Jan 1, 2016 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 53 µg/L, federal limit 30 µg/L (1.8 times the limit)
|
Oct 1, 2015 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 36 pCi/L, federal limit 15 pCi/L (2.4 times the limit)
|
Oct 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 36 µg/L, federal limit 30 µg/L (1.2 times the limit)
|
Jul 1, 2015 | Resolved |
|
Gross Alpha, Excl. Radon and U
Contaminant limit exceeded
Measured 40 pCi/L, federal limit 15 pCi/L (2.7 times the limit)
|
Jul 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)
|
Apr 1, 2015 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 32 µg/L, federal limit 30 µg/L (1.1 times the limit)
|
Oct 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)
|
Jul 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 35 µg/L, federal limit 30 µg/L (1.2 times the limit)
|
Apr 1, 2014 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2011 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2007 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1999 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1998 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1995 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1995 | Resolved |
Enforcement actions
Oklahoma regulators and EPA took 10 formal enforcement actions against Apache between 2011 and 2026. The most recent was a compliance order (no penalty) in March 2026.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 12, 2026 | EPA | Compliance order (no penalty) | 2 violations (1 health-based): LEAD AND COPPER RULE REVISIONS |
| Oct 27, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Feb 6, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Feb 3, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Combined Uranium |
| May 11, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Dec 16, 2016 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Aug 10, 2016 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Combined Uranium, Gross Alpha, Excl. Radon and U |
| Apr 20, 2016 | Oklahoma | Compliance order with a penalty | 8 violations (8 health-based): Gross Alpha, Excl. Radon and U, Combined Uranium |
| May 1, 2015 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Combined Uranium |
| Jun 14, 2011 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
What the violations mean
Nitrate-Nitrite
4 incidentsTest results for Nitrate-Nitrite 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.
Combined Uranium
1 incidentTest results for Combined Uranium were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Where the water comes from
Apache draws water from 3 wells.
Annual water quality report
Apache 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