Public water system record
Hydro PWA
Serves Hydro, Caddo County, OK · 1,060 people served
Federal records show 3 health-based violations and 31 monitoring/reporting issues for Hydro PWA in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 2
- Unresolved
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 31
Key facts
- Hydro PWA draws water from 3 wells.
- Most recent formal enforcement: compliance order (no penalty) by EPA, March 2026.
- Record on file since 1994, with 10 health-based violations before October 19, 2016.
Check whether Hydro PWA 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 |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2016 | Resolved | Yes |
|
Nitrate-Nitrite
Contaminant limit exceeded
|
330 | Jan 1, 2016 | Resolved | Yes |
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 19, 2025 | Active |
|
Chlorine
Monitoring and reporting
|
Sep 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Aug 1, 2025 | Resolved |
|
E. coli
Monitoring and reporting
|
Dec 20, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Dec 1, 2024 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 |
Active
Enforcement action in place
|
|
E. coli
Monitoring and reporting
|
Sep 21, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
E. coli
Monitoring and reporting
|
Oct 20, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
E. coli
Monitoring and reporting
|
Jul 27, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 21, 2021 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2021 | Resolved |
|
E. coli
Monitoring and reporting
|
May 21, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2021 | Resolved |
|
E. coli
Monitoring and reporting
|
Mar 18, 2021 | Resolved |
|
Nitrate-Nitrite
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
E. coli
Monitoring and reporting
|
Nov 20, 2020 | Resolved |
|
2,4-D
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2017 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2016 | Resolved |
Full record since 1994
EPA's records for Hydro PWA go back to 1994. Before October 19, 2016 they list 10 health-based violations (10 resolved) and 28 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 4 | 21 |
| 2010 to October 18, 2016 | 4 | 6 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 28 |
Most recent health-based violation before October 19, 2016: Nitrate-Nitrite (acute), began January 2016, Resolved.
Show all 10 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2016 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jan 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2010 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2006 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Apr 1, 2004 | Resolved |
|
Nitrate-Nitrite (acute)
Contaminant limit exceeded
|
Jul 1, 2003 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2002 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 1998 | Resolved |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 1995 | Resolved |
Enforcement actions
Oklahoma regulators and EPA took 8 formal enforcement actions against Hydro PWA and issued 1 boil water order between 1987 and 2026. The most recent was a compliance order (no penalty) in March 2026.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 10, 2026 | EPA | Compliance order (no penalty) | 2 violations (1 health-based): LEAD AND COPPER RULE REVISIONS |
| Jul 14, 2016 | Oklahoma | Compliance order with a penalty | 2 violations (2 health-based): Nitrate-Nitrite |
| Sep 23, 2015 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 24, 2007 | Oklahoma | Compliance order with a penalty | 1 violation: Nitrate-Nitrite |
| Jul 20, 2006 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Aug 25, 2003 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate-Nitrite |
| Jul 9, 2002 | Oklahoma | Compliance order with a penalty | 1 violation (1 health-based): Nitrate |
| Feb 8, 2002 | Oklahoma | Compliance order with a penalty | 20 violations: cis-1,2-Dichloroethylene, DICHLOROMETHANE, p-Dichlorobenzene, 1,1-Dichloroethylene, trans-1,2-Dichloroethylene |
| Sep 30, 1987 | Oklahoma | Boil water order | 1 violation |
What the violations mean
Nitrate-Nitrite
2 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.
Where the water comes from
Hydro PWA draws water from 3 wells.
Annual water quality report
Hydro PWA 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