B65/100
Mount Vernon Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 139,155 residents · Washington
What's In Mount Vernon's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – August 16, 2024Enforcement: 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
SKAGIT CO WATER DISTRICT #1
Population Served
1,974
Water Source
Groundwater
System ID
WA5300392
ANACORTES CITY OF
Population Served
21,105
Water Source
Surface Water
System ID
WA5302200
CAMANO CO-OP WATER & POWER CO
Population Served
1,071
Water Source
Groundwater
System ID
WA5310600
CARNATION WATER SYSTEM CITY OF
Population Served
2,400
Water Source
Groundwater
System ID
WA5311200
SKAGIT COUNTY PUD 1 JUDY RES
Population Served
111,415
Water Source
Surface Water
System ID
WA5379500
WARM BEACH CONFERENCE GROUNDS
Population Served
1,190
Water Source
Groundwater
System ID
WA5392950
Frequently Asked Questions About Mount Vernon Water
Is Mount Vernon tap water safe to drink?
Mount Vernon, Washington tap water receives a grade of B (65/100), which is considered good. Out of 70 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 2 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 Mount Vernon's water?
Of the 70 contaminants tested in Mount Vernon'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 Mount Vernon have any water quality violations?
Yes, Mount Vernon has 98 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 21 of these are health-based violations, which are the most serious category.
Do I need a water filter in Mount Vernon?
Based on EPA data, using a water filter in Mount Vernon 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 Mount Vernon's tap water come from?
Mount Vernon's drinking water is sourced from groundwater and supplied by SKAGIT CO WATER DISTRICT #1 and 5 other water system(s). The system serves approximately 139,155 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Mount Vernon'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. Mount Vernon'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 Mount Vernon's water compare to other cities in Washington?
Mount Vernon's water quality score of 65/100 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 Mount Vernon's water quality?
If you have concerns about Mount Vernon'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 (SKAGIT CO WATER DISTRICT #1) 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.