TapSafetyReport
B78/100

WILKESON WATER DEPARTMENT — Water Quality Report 2026

Serving 1,071 people · Washington

Water Source
Groundwater
County
—
System ID
WA5396950
Violations
19

Contaminant Test Results

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

EPA Violation History

5

Violations (last 5yr)

2

Unresolved

0

Health-Related

TIER 3Unresolved

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: January 1, 2024 – December 31, 2024Rule: Stage 2 DBPRVerify on EPA.gov
TIER 3Unresolved

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: January 1, 2024 – December 31, 2024Rule: Stage 2 DBPRVerify on EPA.gov
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

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

When: January 1, 2023 – December 31, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

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

When: September 1, 2022 – September 30, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

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

When: June 1, 2022 – June 30, 2022Rule: Total Coliform RuleEnforcement: 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 WILKESON WATER DEPARTMENT

Is WILKESON WATER DEPARTMENT water safe to drink?

WILKESON WATER DEPARTMENT water receives a grade of B (78/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.

What contaminants has WILKESON WATER DEPARTMENT detected?

1 contaminants were tested in WILKESON WATER DEPARTMENT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does WILKESON WATER DEPARTMENT have any EPA violations?

Yes, WILKESON WATER DEPARTMENT has 19 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MON, Other.

How many people does WILKESON WATER DEPARTMENT serve?

WILKESON WATER DEPARTMENT serves approximately 1,071 people, Washington.

What type of water does WILKESON WATER DEPARTMENT provide?

WILKESON WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5396950.

How does WILKESON WATER DEPARTMENT compare to other utilities in Washington?

WILKESON WATER DEPARTMENT scores 78/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Washington state page for a full comparison of water systems.