Public water system record
Deer Creek
Serves Deer Creek, Grant County, OK · 147 people served
Federal records show 20 health-based violations and 53 monitoring/reporting issues for Deer Creek in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Groundwater
ZIP
74636
EPA system ID
OK2002711
- Health-based violations, last 10 years
- 20
- Resolved
- 8
- Unresolved
- 1
- Archived by EPA
- 11
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 53
Key facts
- Deer Creek draws water from 2 wells.
- Highest measured level in the last 10 years: Arsenic, 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit), 2025.
- Most recent formal enforcement: compliance order (no penalty) by Oklahoma, November 2025.
- Record on file since 1991, with 40 health-based violations before October 20, 2016.
Check whether Deer Creek 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 |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
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 | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2024 |
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 | Jul 1, 2024 |
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 | Apr 1, 2024 |
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, 2024 |
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 | Oct 1, 2023 |
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 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Oct 1, 2022 | Resolved | No |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 6 pCi/L, federal limit 5 pCi/L (1.2 times the limit)
|
340 | Jul 1, 2022 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2019 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Oct 1, 2018 | Resolved | Yes |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jul 1, 2018 | Resolved | No |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jul 1, 2018 | Resolved | Yes |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jan 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
E. coli
Monitoring and reporting
|
Sep 10, 2025 | Active |
|
Public Notice
OTHER
|
Apr 7, 2025 |
Active
Enforcement action in place
|
|
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 |
|
Nitrate-Nitrite
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Jan 10, 2025 |
Active
Enforcement action in place
|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
E. coli
Monitoring and reporting
|
Sep 27, 2024 | Active |
|
Public Notice
OTHER
|
Aug 25, 2024 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Jul 4, 2024 |
Active
Enforcement action in place
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2022 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Arsenic
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Arsenic
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2018 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
|
Public Notice
OTHER
|
Jan 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2015 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2014 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2013 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2012 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2011 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2010 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2009 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2008 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2007 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2006 | Resolved |
Full record since 1991
EPA's records for Deer Creek go back to 1991. Before October 20, 2016 they list 40 health-based violations (40 resolved) and 176 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 7 | 25 |
| 2000s | 17 | 75 |
| 2010 to October 19, 2016 | 16 | 76 |
| October 20, 2016 to 2019 | 5 | 9 |
| 2020s | 14 | 32 |
Most recent health-based violation before October 20, 2016: Arsenic, began October 2016, Resolved.
Show all 40 health-based violations before October 20, 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)
|
Oct 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jul 1, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Apr 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2015 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2014 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jan 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2013 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2012 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jan 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Oct 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jul 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Apr 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Jan 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Oct 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
Apr 1, 2008 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Oct 1, 2007 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2007 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2007 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2002 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2001 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2001 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1997 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1994 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1993 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 1993 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 1993 | Resolved |
Enforcement actions
Oklahoma regulators took 71 formal enforcement actions against Deer Creek and issued 1 boil water order between 1991 and 2025. 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): Arsenic |
| Sep 4, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Jun 16, 2025 | Oklahoma | Compliance order (no penalty) | 4 violations: Public Notice |
| Jun 13, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Apr 3, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Dec 17, 2024 | Oklahoma | Compliance order with a penalty | 7 violations (7 health-based): Nitrate-Nitrite |
| Aug 23, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 2, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Apr 10, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Jan 23, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Oct 17, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Apr 12, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Combined Radium (-226 and -228) |
| Feb 9, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Combined Radium (-226 and -228) |
| Jun 4, 2020 | Oklahoma | Compliance order with a penalty | 6 violations (6 health-based): Arsenic, Nitrate-Nitrite |
| Mar 14, 2019 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Jan 14, 2019 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| Nov 30, 2018 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Oct 23, 2018 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Nitrate-Nitrite |
| May 10, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Mar 10, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Jan 17, 2017 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Jul 14, 2016 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Mar 4, 2016 | Oklahoma | Compliance order with a penalty | 2 violations (1 health-based): Nitrate-Nitrite, Public Notice |
| Oct 12, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 9, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Feb 20, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Oct 15, 2014 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Mar 26, 2014 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jan 8, 2014 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Oct 23, 2013 | Oklahoma | Compliance order with a penalty | 2 violations: Lead and Copper Rule |
| Aug 26, 2013 | Oklahoma | Compliance order with a penalty | 1 violation: Arsenic |
| Aug 22, 2013 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Arsenic |
| May 23, 2013 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Apr 18, 2013 | Oklahoma | Compliance order with a penalty | 2 violations: Arsenic |
| Apr 5, 2013 | Oklahoma | Compliance order with a penalty | 2 violations: Nitrate-Nitrite |
| Mar 11, 2013 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Feb 22, 2013 | Oklahoma | Compliance order with a penalty | 4 violations: Total Coliform |
| Oct 2, 2012 | Oklahoma | Compliance order with a penalty | 3 violations: Consumer Confidence Rule |
| Sep 18, 2012 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| May 11, 2012 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Feb 29, 2012 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Feb 22, 2012 | Oklahoma | Compliance order with a penalty | 21 violations: 1,2,4-Trichlorobenzene, CHLOROBENZENE, 1,1,2-Trichloroethane, Xylenes, Total, DICHLOROMETHANE |
| Feb 9, 2012 | Oklahoma | Compliance order with a penalty | 1 violation: Arsenic |
| Nov 18, 2011 | Oklahoma | Compliance order with a penalty | 1 violation: Arsenic |
| Nov 3, 2011 | Oklahoma | Compliance order with a penalty | 6 violations: Total Coliform |
| Aug 2, 2011 | Oklahoma | Compliance order with a penalty | 1 violation: Arsenic |
| Apr 20, 2011 | Oklahoma | Compliance order with a penalty | 4 violations: Consumer Confidence Rule |
| Sep 28, 2010 | Oklahoma | Compliance order with a penalty | 6 violations: Total Coliform |
| Jun 16, 2010 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
| Feb 3, 2010 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Arsenic |
22 older actions are not listed here. EPA ECHO has the complete list.
What the violations mean
Nitrate-Nitrite
10 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.
Arsenic
7 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Combined Radium (-226 and -228)
2 incidentsTest results for Combined Radium (-226 and -228) 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
Deer Creek draws water from 2 wells.
Annual water quality report
Deer Creek 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Deer Creek for a copy.
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