F0/100
BONNEY LAKE WATER DEPARTMENT CITY — Water Quality Report 2026
Serving 42,654 people · Washington
Water Source
Purchased Surface Water
County
—
System ID
WA5307650
Violations
147
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.58 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – February 20, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – May 9, 2022Enforcement: 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 BONNEY LAKE WATER DEPARTMENT CITY
Is BONNEY LAKE WATER DEPARTMENT CITY water safe to drink?
BONNEY LAKE WATER DEPARTMENT CITY water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 147 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BONNEY LAKE WATER DEPARTMENT CITY detected?
70 contaminants were tested in BONNEY LAKE WATER DEPARTMENT CITY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does BONNEY LAKE WATER DEPARTMENT CITY have any EPA violations?
Yes, BONNEY LAKE WATER DEPARTMENT CITY has 147 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR.
How many people does BONNEY LAKE WATER DEPARTMENT CITY serve?
BONNEY LAKE WATER DEPARTMENT CITY serves approximately 42,654 people, Washington.
What type of water does BONNEY LAKE WATER DEPARTMENT CITY provide?
BONNEY LAKE WATER DEPARTMENT CITY 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 WA5307650.
How does BONNEY LAKE WATER DEPARTMENT CITY compare to other utilities in Washington?
BONNEY LAKE WATER DEPARTMENT CITY scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Washington state page for a full comparison of water systems.