Is Lake Goodwin, WA tap water safe?
The short answer
None of the 11 utilities serving Lake Goodwin 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 Lake Goodwin’s ZIP codes, from EPA’s estimates.
- Open report
Marysville Utilities
Washington · serves 88,582 people · about 1,300 in Lake Goodwin
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
City of Stanwood Water Dept
Washington · serves 17,586 people · about 250 in Lake Goodwin
2 results above the health goal. The worst: Arsenic at 8.5 ppb, above the health goal. Hardness: moderately hard to very hard depending on the source, 106 to 222 mg/L (6.2 to 13 grains per gallon).
No health-based violations since 2016
- Open report
Seven Lakes Water Association
Washington · serves 5,823 people · about 210 in Lake Goodwin
2 results above the health goal. The worst: Arsenic at 7.7 ppb, above the health goal. Hardness: moderately hard, typically 81 mg/L (4.7 grains per gallon).
No health-based violations since 2016
- Open report
Tulalip Bay Water Dist #1
Washington · serves 5,968 people · about 110 in Lake Goodwin
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
City of Arlington
Washington · serves 29,508 people · under 100 in Lake Goodwin
1 result above the health goal. The worst: Arsenic at 1.6 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 42 to 84 mg/L (2.4 to 4.9 grains per gallon).
No health-based violations since 2016
- Open report
Sno PUD 1 - Warm Beach
Washington · serves 2,977 people · under 100 in Lake Goodwin
2 results above the health goal. The worst: Arsenic at 1.5 ppb, above the health goal. Hardness: soft to moderately hard depending on the source, 53 to 115 mg/L (3.1 to 6.7 grains per gallon).
No health-based violations since 2016
- Open report
Sno PUD 1 - Sunday Lake
Washington · serves 561 people · under 100 in Lake Goodwin
2 results above the health goal. The worst: Arsenic at 6.9 ppb, above the health goal. Hardness: moderately hard, 81 mg/L (4.7 grains per gallon).
No health-based violations since 2016
- Open report
Indian Ridge Water Association
Washington · serves 216 people · under 100 in Lake Goodwin
1 result above the health goal. The worst: Arsenic at 5.4 ppb, above the health goal. Hardness: soft, 48 mg/L (2.8 grains per gallon).
No health-based violations since 2016
- Open report
Kathann Estates Water
Washington · serves 134 people · under 100 in Lake Goodwin
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
Wilderness Ridge Community Club
Washington · serves 664 people · under 100 in Lake Goodwin
1 result above the health goal. The worst: Arsenic at 7.6 ppb, above the health goal.
No health-based violations since 2016
1 more utility in Lake Goodwin
By EPA’s estimate, each serves fewer people in Lake Goodwin than those above.
- Aqua Hills Marysvilleserves 113 people · under 100 in Lake Goodwin · 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.
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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 Lake Goodwin
The 3 labs Washington certifies closest to Lake Goodwin, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Freshwater Analytical Labs, LLC
Arlington, WA · about 10 miles
Certified for bacteria
Precision Analytical Laboratories, LLC
Everett, WA · about 12 miles
Certified for lead and copper, metals, minerals and other inorganics
Everett Environmental Laboratory
Everett, WA · about 13 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Which ZIP codes are in Lake Goodwin: 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 Lake Goodwin
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