F0/100
Friday Harbor Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,528 residents · Washington
What's In Friday Harbor's Tap Water?
32
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.93 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to complete routine monitoring
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – January 31, 2023Rule: Surface Water Treatment 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
Water Utility Details
FRIDAY HARBOR TOWN OF
Population Served
3,543
Water Source
Surface Water
System ID
WA5326595
ROCHE HARBOR WATER SYSTEM INC
Population Served
1,985
Water Source
Surface Water
System ID
WA5373230
Frequently Asked Questions About Friday Harbor Water
Is Friday Harbor tap water safe to drink?
Friday Harbor, Washington tap water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 313 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Friday Harbor's water?
Of the 32 contaminants tested in Friday Harbor's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Friday Harbor have any water quality violations?
Yes, Friday Harbor has 313 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, Other, TT. 47 of these are health-based violations, which are the most serious category.
Do I need a water filter in Friday Harbor?
Based on EPA data, using a water filter in Friday Harbor is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Friday Harbor's tap water come from?
Friday Harbor's drinking water is sourced from surface water and supplied by FRIDAY HARBOR TOWN OF and 1 other water system(s). The system serves approximately 5,528 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Friday Harbor's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Friday Harbor's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Friday Harbor's water compare to other cities in Washington?
Friday Harbor's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Washington state page to see how all cities in the state compare.
What should I do if I'm concerned about Friday Harbor's water quality?
If you have concerns about Friday Harbor's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (FRIDAY HARBOR TOWN OF) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.