C51/100
Tenino City of — Water Quality Report 2026
Serving 3,336 people · Washington
Water Source
Groundwater
County
—
System ID
WA5387400
Violations
38
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.20 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.009 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – February 24, 2025Enforcement: 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 Tenino City of
Is Tenino City of water safe to drink?
Tenino City of water receives a grade of C (51/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 38 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Tenino City of detected?
32 contaminants were tested in Tenino City of's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does Tenino City of have any EPA violations?
Yes, Tenino City of has 38 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR.
How many people does Tenino City of serve?
Tenino City of serves approximately 3,336 people, Washington.
What type of water does Tenino City of provide?
Tenino City of sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5387400.
How does Tenino City of compare to other utilities in Washington?
Tenino City of scores 51/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Washington state page for a full comparison of water systems.