B70/100
LAKE CUSHMAN SYSTEM 5 — Water Quality Report 2026
Serving 3,675 people · Washington
Water Source
Groundwater
County
—
System ID
WA5303529
Violations
15
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.70 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 LAKE CUSHMAN SYSTEM 5
Is LAKE CUSHMAN SYSTEM 5 water safe to drink?
LAKE CUSHMAN SYSTEM 5 water receives a grade of B (70/100), which is considered good. Out of 32 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LAKE CUSHMAN SYSTEM 5 detected?
32 contaminants were tested in LAKE CUSHMAN SYSTEM 5's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does LAKE CUSHMAN SYSTEM 5 have any EPA violations?
Yes, LAKE CUSHMAN SYSTEM 5 has 15 EPA violation(s) on record, with the most recent in 2018. Violation types include Other, MON, MR. 1 are health-based violations.
How many people does LAKE CUSHMAN SYSTEM 5 serve?
LAKE CUSHMAN SYSTEM 5 serves approximately 3,675 people, Washington.
What type of water does LAKE CUSHMAN SYSTEM 5 provide?
LAKE CUSHMAN SYSTEM 5 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5303529.
How does LAKE CUSHMAN SYSTEM 5 compare to other utilities in Washington?
LAKE CUSHMAN SYSTEM 5 scores 70/100 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.