Public water system record
Red Rock
Serves Red Rock, Noble County, OK · 293 people served
Federal records show 10 health-based violations and 75 monitoring/reporting issues for Red Rock in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.
System profile
Source water
Purchased surface water
ZIP
74651
EPA system ID
OK2005202
- Health-based violations, last 10 years
- 10
- Resolved
- 0
- Unresolved
- 0
- Archived by EPA
- 10
- Any acute record
- No
- Monitoring issues, last 10 years
- 75
Key facts
- Red Rock buys its water from Otoe-Missouria Tribe.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit), 2024.
- Most recent formal enforcement: compliance order with a penalty by Oklahoma, July 2025.
- Record on file since 1991, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 90 service lines.
Check whether Red Rock 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.097 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.108 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.108 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.104 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2025 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Mar 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Feb 1, 2025 | Resolved |
|
Public Notice
OTHER
|
Sep 9, 2024 | Resolved |
|
Public Notice
OTHER
|
Sep 9, 2024 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Sep 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Chlorine
Monitoring and reporting
|
Sep 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Aug 19, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Aug 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Jul 31, 2024 | Resolved |
|
Public Notice
OTHER
|
Jul 2, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jun 1, 2024 | Resolved |
|
Public Notice
OTHER
|
May 14, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Public Notice
OTHER
|
Dec 26, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2023 | Resolved |
|
Public Notice
OTHER
|
Oct 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Mar 1, 2023 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2022 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Dec 2, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Jul 31, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
E. coli
Monitoring and reporting
|
Apr 3, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
Full record since 1991
EPA's records for Red Rock go back to 1991. Before October 19, 2016 they list 7 health-based violations (7 resolved) and 40 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 5 | 12 |
| 2000s | 2 | 14 |
| 2010 to October 18, 2016 | 0 | 14 |
| October 19, 2016 to 2019 | 0 | 10 |
| 2020s | 10 | 64 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began July 2009, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jul 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.091 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2009 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jun 1, 1995 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Oct 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1993 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1992 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1991 | Resolved |
Enforcement actions
Oklahoma regulators took 15 formal enforcement actions against Red Rock and issued 3 boil water orders between 1986 and 2025. The most recent was a compliance order with a penalty in July 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jul 14, 2025 | Oklahoma | Compliance order with a penalty | 10 violations (10 health-based): Total Trihalomethanes (TTHMs) |
| May 2, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jan 7, 2025 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 14, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jul 9, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| May 22, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Apr 3, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 15, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 21, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 6, 2012 | Oklahoma | Compliance order with a penalty | 3 violations: Consumer Confidence Rule |
| Dec 4, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Aug 14, 2009 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Sep 4, 2008 | Oklahoma | Compliance order with a penalty | 4 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jan 29, 2002 | Oklahoma | Compliance order with a penalty | 3 violations: Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228), Gross Beta Particle Activity |
| Sep 20, 1995 | Oklahoma | Compliance order (no penalty) | 1 violation: Total Coliform |
| Jun 15, 1995 | Oklahoma | Boil water order | 1 violation (1 health-based): Total Coliform |
| Sep 30, 1987 | Oklahoma | Boil water order | 1 violation |
| Sep 30, 1986 | Oklahoma | Boil water order | 1 violation |
What the violations mean
Total Trihalomethanes (TTHMs)
10 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Where the water comes from
Red Rock buys its water from Otoe-Missouria Tribe. It lists no wells or intakes of its own.
Buys water from
- Otoe-Missouria Tribe Red Rock, OK
Annual water quality report
Red Rock 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 Red Rock 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