WASHINGTON CO RWD #7
PWSID: OK3007415 · Dewey, OK · Serves 258 people
According to EPA Safe Drinking Water Information System (SDWIS), WASHINGTON CO RWD #7 (PWSID OK3007415) in Dewey, OK is listed as a CWS water system covering about 258 people. The same extract lists 22 health-based violation records spanning 2014-2025. Those 22 health-based rows for WASHINGTON CO RWD #7 cover contaminants such as TTHM, Total Haloacetic Acids (HAA5), Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
WASHINGTON CO RWD #7 has 22 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 4 distinct EPA contaminant codes appear in this system's record, including TTHM, Total Haloacetic Acids (HAA5), Lead and Copper Rule. Recorded violations span 2014–2025. Day-to-day primacy enforcement for this system runs through the Oklahoma drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oklahoma state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- OK3007415
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Dewey, OK
- Population Served
- 258
- Health Violations
- Yes (22)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 15 | 15 |
| Total Haloacetic Acids (HAA5) | 4 | 4 |
| Lead and Copper Rule | 2 | 2 |
| LEAD AND COPPER RULE REVISIONS | 1 | 1 |
Violation History (22)
| Contaminant | Health | Date |
|---|---|---|
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2025 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | Yes | Oct 17, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2024 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Apr 1, 2022 |
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Oct 1, 2021 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Apr 1, 2018 |
| Lead and Copper Rule | Yes | Jun 10, 2017 |
| TTHM | Yes | Apr 1, 2016 |
| TTHM | Yes | Jan 1, 2016 |
| Lead and Copper Rule | Yes | Dec 7, 2015 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Oct 1, 2014 |
| TTHM | Yes | Jul 1, 2014 |
Frequently Asked Questions
What does EPA SDWIS list for WASHINGTON CO RWD #7?
How many people does WASHINGTON CO RWD #7 serve?
What violations does WASHINGTON CO RWD #7 have?
What contaminants have been found in WASHINGTON CO RWD #7 water?
Compare beyond Oklahoma
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest WASHINGTON CO RWD #7 on cumulative violation count (22) and EPA-reported population served (258). Violation-count peers include TWIN BUTTES WATER PLANT, MARION COUNTY PUBLIC WATER AUTHORITY, TAYLOR WATERWORKS.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
WASHINGTON CO RWD #7 (OK3007415) is drawn from EPA SDWIS. Nearby county systems in this extract include DEWEY PUBLIC WORKS AUTHORITY; GRAND LAKE PWA; WASHINGTON CO RWD #2; WASHINGTON CO RWD #1. Health-based rows (22 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.