Public water system record
Rogers Co RWD # 4
Serves an area of Rogers County, OK that includes Oologah and Talala · 7,725 people served
Federal records show 2 health-based violations and 16 monitoring/reporting issues for Rogers Co RWD # 4 in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 1
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 16
Key facts
- Rogers Co RWD # 4 draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit), 2022.
- Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
- Record on file since 1993, with 30 health-based violations before October 19, 2016.
Check whether Rogers Co RWD # 4 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 |
Active
Enforcement action in place
|
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, 2022 | Resolved | 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 REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Dec 30, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jul 1, 2017 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jun 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jun 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Mar 1, 2017 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
|
Gross Beta Particle Activity
Monitoring and reporting
|
Jan 1, 2008 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2008 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2008 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2008 | Resolved |
Full record since 1993
EPA's records for Rogers Co RWD # 4 go back to 1993. Before October 19, 2016 they list 30 health-based violations (27 resolved, 3 archived by EPA without a recorded fix) and 31 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 7 | 5 |
| 2000s | 20 | 22 |
| 2010 to October 18, 2016 | 3 | 4 |
| October 19, 2016 to 2019 | 0 | 6 |
| 2020s | 2 | 5 |
Most recent health-based violation before October 19, 2016: CARBON, TOTAL, began July 2013, Resolved.
Show all 30 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2013 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2013 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2013 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
Jan 1, 2007 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Apr 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.068 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
Jan 1, 2006 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2006 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Apr 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Apr 1, 2005 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Jan 1, 2005 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jan 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2004 | Resolved |
|
CARBON, TOTAL
Treatment technique failure
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Oct 1, 2004 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
|
Jul 1, 2004 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Jul 1, 1994 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
May 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1994 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 1993 | Archived |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1993 | Archived |
Enforcement actions
Oklahoma regulators and EPA took 15 formal enforcement actions against Rogers Co RWD # 4 and issued 1 boil water order between 1994 and 2026, filed as 17 records in EPA's data. The most recent was a compliance order (no penalty) in March 2026.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 6, 2026 | EPA | Compliance order (no penalty) | 1 violation (1 health-based): LEAD AND COPPER RULE REVISIONS |
| Apr 29, 2022 | Oklahoma | Compliance order (no penalty) | 1 violation (1 health-based): Haloacetic Acids (HAA5) |
| Mar 7, 2014 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Jul 17, 2013 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Jul 1, 2013 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): CARBON, TOTAL |
| Feb 17, 2009 | Oklahoma | Compliance order with a penalty | 5 violations: Interim Enhanced Surface Water Treatment Rule |
| Aug 8, 2007 | Oklahoma | Compliance order with a penalty | 3 violations: Interim Enhanced Surface Water Treatment Rule |
| May 8, 2007 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Oct 3, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Haloacetic Acids (HAA5) |
| Sep 20, 2006 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Apr 7, 2006 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Jan 4, 2006 | Oklahoma | Compliance order with a penalty | 5 violations (5 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Sep 14, 2005 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Jun 24, 2005 | Oklahoma | Compliance order with a penalty | 5 violations (5 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs), CARBON, TOTAL |
| Jan 14, 2005 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Jul 25, 1994 | Oklahoma | Boil water order | 2 violations (2 health-based): Total Coliform |
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.
Haloacetic Acids (HAA5)
1 incidentHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Where the water comes from
Rogers Co RWD # 4 draws water from 1 surface water intake.
Annual water quality report
Rogers Co RWD # 4 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