F0/100
YACOLT — Water Quality Report 2026
Serving 3,034 people · Washington
Water Source
Groundwater
County
—
System ID
WA5399000
Violations
73
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.50 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Consumer confidence report — late or incomplete delivery
When: October 2, 2022 – March 22, 2023Rule: Ground Water 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 YACOLT
Is YACOLT water safe to drink?
YACOLT water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 73 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has YACOLT detected?
2 contaminants were tested in YACOLT's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does YACOLT have any EPA violations?
Yes, YACOLT has 73 EPA violation(s) on record, with the most recent in 2022. Violation types include TT, Other, MR. 10 are health-based violations.
How many people does YACOLT serve?
YACOLT serves approximately 3,034 people, Washington.
What type of water does YACOLT provide?
YACOLT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5399000.
How does YACOLT compare to other utilities in Washington?
YACOLT 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.