Is Marysville, WA tap water safe?
The short answer
None of the 5 utilities serving Marysville has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records.
Marysville Utilities, which serves the most people here, has 2 results above the health goal. The worst: Arsenic at 5.1 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Marysville Utilities is soft to moderately hard depending on the source, 58 to 76 mg/L (3.4 to 4.5 grains per gallon). How Washington’s water compares.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Marysville’s ZIP codes, from EPA’s estimates.
- Open report
Marysville Utilities
Washington · serves 88,582 people · about 44,700 in Marysville
2 results above the health goal. The worst: Arsenic at 5.1 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 58 to 76 mg/L (3.4 to 4.5 grains per gallon).
No health-based violations since 2016
- Open report
Sno PUD 1 - Storm Lake Ridge
Washington · serves 786 people · about 370 in Marysville
1 result above the health goal. The worst: Lead at 2.5 ppb, above the health goal.
No health-based violations since 2016
- Open report
Tulalip Bay Water Dist #1
Washington · serves 5,968 people · about 280 in Marysville
1 result above the health goal. The worst: Lead at 0.4 ppb, above the health goal.
No health-based violations since 2016
- Open report
Kathann Estates Water
Washington · serves 134 people · under 100 in Marysville
2 results above the health goal. The worst: Arsenic at 7.2 ppb, above the health goal.
No health-based violations since 2016
- Open report
Sam Lake Improvement Association
Washington · serves 128 people · under 100 in Marysville
2 results above the health goal. The worst: Arsenic at 5.8 ppb, above the health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Marysville Utilities’s water, which serves the most people here. Another utility’s report names what handles its own results.
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Water testing near Marysville
The 3 labs Washington certifies closest to Marysville, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Precision Analytical Laboratories, LLC
Everett, WA · about 5 miles
Certified for lead and copper, metals, minerals and other inorganics
Everett Environmental Laboratory
Everett, WA · about 6 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Freshwater Analytical Labs, LLC
Arlington, WA · about 15 miles
Certified for bacteria
Which ZIP codes are in Marysville: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Washington State Department of Ecology, Lab Accreditation Program, environmental laboratories accredited for drinking water analyses; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Marysville
Other towns in Snohomish County with a page of their own.
What to do next
- Read Marysville Utilities’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water