A90/100
Lynnwood Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 268,204 residents · Washington
What's In Lynnwood's Tap Water?
76
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.028 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1992.
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
ALDERWOOD WATER DISTRICT
Population Served
200,000
Water Source
Purchased Surface Water
System ID
WA5301300
LYNNWOOD CITY OF
Population Served
68,204
Water Source
Purchased Surface Water
System ID
WA5349270
Frequently Asked Questions About Lynnwood Water
Is Lynnwood tap water safe to drink?
Lynnwood, Washington tap water receives a grade of A (90/100), which is considered excellent. Out of 76 contaminants tested, 1 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 Lynnwood's water?
Of the 76 contaminants tested in Lynnwood's water supply, the most notable include Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Lynnwood have any water quality violations?
Yes, Lynnwood has 12 EPA violation(s) on record, with the most recent in 2017. Violation types include Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Lynnwood?
Based on EPA data, using a water filter in Lynnwood 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 Lynnwood's tap water come from?
Lynnwood's drinking water is sourced from purchased surface water and supplied by ALDERWOOD WATER DISTRICT and 1 other water system(s). The system serves approximately 268,204 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Lynnwood'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. Lynnwood'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 Lynnwood's water compare to other cities in Washington?
Lynnwood's water quality score of 90/100 earns a grade of A, which is considered excellent. This places Lynnwood among the better-performing water systems in Washington. Visit our Washington state page to see how all cities in the state compare.
What should I do if I'm concerned about Lynnwood's water quality?
If you have concerns about Lynnwood'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 (ALDERWOOD WATER DISTRICT) 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.