PlainWater
Counties → Oklahoma

Washington County, Oklahoma

Water Systems
11
Population Served
45,692
Total Violations
1,820
402 health-based
PFAS Detected
2
of 3 tested

Violation Analysis

100.0%
Systems with Violations
165.5
Avg Violations per System
22.1%
Health-Based Violations

Water Source Types

SW
11 systems (100%)

PFAS Contamination

3
Systems Tested
2
PFAS Detected
66.7%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Washington Oklahoma water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (11)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Bartlesville 34,748 142 Detected
Dewey Public Works Authority 3,490 61 Detected
Washington Co RWD #2 2,250 84 -
Washington Co RWD #1 1,375 99 -
Washington Co RWD #5 900 149 -
Le Ann Water 750 211 -
Copan PWA 733 408 -
Ramona Public Works Authority 564 162 Clean
Ochelata Utility Authority 494 95 -
Washington Co RWD #7 258 306 -
Bar-Dew Water Assoc Inc 130 103 -

Other Counties in Oklahoma

Oklahoma County
121 systems · 889,384 served · 20,669 violations
Tulsa County
15 systems · 666,353 served · 1,073 violations
Cleveland County
73 systems · 216,341 served · 8,560 violations
Comanche County
25 systems · 137,288 served · 5,160 violations
Payne County
22 systems · 87,559 served · 2,865 violations
Rogers County
15 systems · 75,204 served · 2,062 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Washington County? ▼
Washington County has 1,820 total drinking water violations across 11 water systems, of which 402 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Washington County systems? ▼
Water systems in Washington County serve approximately 45,692 people through 11 public water systems.
Has PFAS been detected in Washington County water? ▼
Of 3 water systems tested for PFAS in Washington County, 2 had PFAS detected (66.7% detection rate).
What types of water sources supply Washington County? ▼
Water systems in Washington County use SW (11 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 22.1% of Washington County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.