TapSafetyReport
C54/100

DEWEY PUBLIC WORKS AUTHORITY — Water Quality Report 2026

Serving 3,490 people · Oklahoma

Water Source
Purchased Surface Water
County
—
System ID
OK3007402
Violations
19

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.003 mg/L0.015 mg/LAbove Goal

EPA Violation History

8

Violations (last 5yr)

5

Unresolved

4

Health-Related

TIER 3Unresolved

Reporting violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Treatment technique violation

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2024 – June 30, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Failed to conduct Level 2 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: March 31, 2024 – May 31, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2024 – March 31, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2023 – December 31, 2023Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: August 1, 2022 – August 31, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2022 – September 30, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About DEWEY PUBLIC WORKS AUTHORITY

Is DEWEY PUBLIC WORKS AUTHORITY water safe to drink?

DEWEY PUBLIC WORKS AUTHORITY water receives a grade of C (54/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 19 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has DEWEY PUBLIC WORKS AUTHORITY detected?

31 contaminants were tested in DEWEY PUBLIC WORKS AUTHORITY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does DEWEY PUBLIC WORKS AUTHORITY have any EPA violations?

Yes, DEWEY PUBLIC WORKS AUTHORITY has 19 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MCL. 6 are health-based violations.

How many people does DEWEY PUBLIC WORKS AUTHORITY serve?

DEWEY PUBLIC WORKS AUTHORITY serves approximately 3,490 people, Oklahoma.

What type of water does DEWEY PUBLIC WORKS AUTHORITY provide?

DEWEY PUBLIC WORKS AUTHORITY sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OK3007402.

How does DEWEY PUBLIC WORKS AUTHORITY compare to other utilities in Oklahoma?

DEWEY PUBLIC WORKS AUTHORITY scores 54/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Oklahoma state page for a full comparison of water systems.