B78/100
Sedro Woolley Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,780 residents · Washington
What's In Sedro Woolley's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
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 2015.
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
GLENHAVEN LAKES CLUB
Population Served
1,780
Water Source
Groundwater
System ID
WA5328050
Frequently Asked Questions About Sedro Woolley Water
Is Sedro Woolley tap water safe to drink?
Sedro Woolley, Washington tap water receives a grade of B (78/100), which is considered good. Out of 1 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Sedro Woolley's water?
Of the 1 contaminants tested in Sedro Woolley's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Sedro Woolley have any water quality violations?
Yes, Sedro Woolley has 15 EPA violation(s) on record, with the most recent in 2015. Violation types include Other, MR, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Sedro Woolley?
Sedro Woolley water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Sedro Woolley's tap water come from?
Sedro Woolley's drinking water is sourced from groundwater and supplied by GLENHAVEN LAKES CLUB. The system serves approximately 1,780 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Sedro Woolley'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. Sedro Woolley'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 Sedro Woolley's water compare to other cities in Washington?
Sedro Woolley's water quality score of 78/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Washington state page to see how all cities in the state compare.
What should I do if I'm concerned about Sedro Woolley's water quality?
If you have concerns about Sedro Woolley'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 (GLENHAVEN LAKES CLUB) 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.