Public water system record
Nowata Co RWD #2
Serves an area of Nowata County, OK · 205 people served
Federal records show 29 health-based violations and 43 monitoring/reporting issues for Nowata Co RWD #2 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
74048
EPA system ID
OK3005303
- Health-based violations, last 10 years
- 29
- Resolved
- 19
- Unresolved
- 0
- Archived by EPA
- 10
- Any acute record
- No
- Monitoring issues, last 10 years
- 43
Key facts
- Nowata Co RWD #2 buys its water from Nowata Municipal Authority.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.115 mg/L, federal limit 0.08 mg/L (1.4 times the limit), 2023.
- Most recent formal enforcement: compliance order (no penalty) by Oklahoma, September 2025.
- Record on file since 1992, with 4 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 72 unknown out of 94 service lines.
Check whether Nowata Co RWD #2 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 0.087 mg/L, federal limit 0.08 mg/L (1.1 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 0.089 mg/L, federal limit 0.08 mg/L (1.1 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 0.081 mg/L, federal limit 0.08 mg/L (at or just above 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 0.091 mg/L, federal limit 0.08 mg/L (1.1 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 0.11 mg/L, federal limit 0.08 mg/L (1.4 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 0.115 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 |
|
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, 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 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2022 |
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 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Jan 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.109 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Apr 1, 2020 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Jan 1, 2020 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.112 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Oct 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.066 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Jul 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.093 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Apr 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.106 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
220 | Jan 1, 2019 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.096 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
220 | Oct 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.101 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Jul 1, 2018 | Resolved | No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Apr 1, 2018 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2018 | 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 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 | Active |
|
Public Notice
OTHER
|
May 11, 2025 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2025 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Feb 13, 2025 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2025 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2024 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Oct 22, 2024 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Oct 10, 2024 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2024 |
Active
Enforcement action in place
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2024 | Active |
|
Public Notice
OTHER
|
Jun 5, 2024 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 31, 2024 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Mar 20, 2024 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2024 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2023 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Dec 16, 2023 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Oct 1, 2023 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2023 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2023 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2023 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2023 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2023 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2022 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2022 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2022 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2021 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2021 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2020 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2020 |
Active
Enforcement action in place
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 30, 2020 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 30, 2020 |
Active
Enforcement action in place
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Mar 31, 2020 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 31, 2020 |
Active
Enforcement action in place
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 30, 2019 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Dec 30, 2019 |
Active
Enforcement action in place
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2018 |
Active
Enforcement action in place
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Sep 29, 2018 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Sep 29, 2018 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
Full record since 1992
EPA's records for Nowata Co RWD #2 go back to 1992. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 10 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 5 |
| 2010 to October 18, 2016 | 2 | 5 |
| October 19, 2016 to 2019 | 13 | 7 |
| 2020s | 16 | 36 |
Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2015, Resolved.
Show all 4 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Apr 1, 2015 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jan 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 1992 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 1992 | Resolved |
Enforcement actions
Oklahoma regulators took 24 formal enforcement actions against Nowata Co RWD #2 between 2012 and 2025. The most recent was a compliance order (no penalty) in September 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 17, 2025 | Oklahoma | Compliance order (no penalty) | 12 violations: Lead and Copper Rule, Total Trihalomethanes (TTHMs), Public Notice |
| Jun 24, 2024 | Oklahoma | Compliance order with a penalty | 11 violations (10 health-based): Total Trihalomethanes (TTHMs) |
| May 28, 2024 | Oklahoma | Compliance order (no penalty) | 10 violations: Total Trihalomethanes (TTHMs), Lead and Copper Rule, Public Notice |
| Apr 25, 2024 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Feb 8, 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) |
| Apr 26, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Mar 28, 2023 | Oklahoma | Compliance order (no penalty) | 16 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Lead and Copper Rule |
| Feb 3, 2023 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 5, 2021 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Mar 25, 2021 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 20, 2020 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| May 8, 2020 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Mar 9, 2020 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Nov 5, 2019 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Sep 11, 2019 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| May 1, 2019 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Feb 4, 2019 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Nov 6, 2018 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Sep 17, 2018 | Oklahoma | Compliance order (no penalty) | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Sep 15, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jun 12, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Nov 2, 2012 | Oklahoma | Compliance order with a penalty | 3 violations: Consumer Confidence Rule |
What the violations mean
Total Trihalomethanes (TTHMs)
22 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Haloacetic Acids (HAA5)
7 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Where the water comes from
Nowata Co RWD #2 buys its water from Nowata Municipal Authority. It lists no wells or intakes of its own.
Buys water from
- Nowata Municipal Authority Nowata, OK
Annual water quality report
Nowata Co RWD #2 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 Nowata Co RWD #2 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