F0/100
Lake Quinault — Water Quality Report 2026
Serving 1,003 people · Washington
Water Source
Groundwater
County
—
System ID
WA5370350
Violations
271
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.70 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 Quinault
Is Lake Quinault water safe to drink?
Lake Quinault water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 271 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Lake Quinault detected?
2 contaminants were tested in Lake Quinault'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 Quinault have any EPA violations?
Yes, Lake Quinault has 271 EPA violation(s) on record, with the most recent in 2007. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does Lake Quinault serve?
Lake Quinault serves approximately 1,003 people, Washington.
What type of water does Lake Quinault provide?
Lake Quinault sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5370350.
How does Lake Quinault compare to other utilities in Washington?
Lake Quinault 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.