Is Martha Lake, WA tap water safe?
The short answer
1 of the 5 utilities serving Martha Lake has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records: Alderwood Water District.
Alderwood Water District, which serves the most people here, has 1 result above the action level. The worst: Lead at 28 ppb, above the action level.
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 Martha Lake’s ZIP codes, from EPA’s estimates.
- Open report
Alderwood Water District
Washington · serves 245,715 people · about 15,500 in Martha Lake
1 result above the action level. The worst: Lead at 28 ppb, above the action level.
No health-based violations since 2016
- Open report
Silver Lake Water & Sewer District
Washington · serves 65,033 people · about 4,100 in Martha Lake
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
City of Lynnwood
Washington · serves 68,204 people · about 1,900 in Martha Lake
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
City of Everett Public Works Dept.
Washington · serves 215,774 people · about 1,200 in Martha Lake
1 result above the health goal. The worst: Lead at 3.5 ppb, above the health goal. Hardness: soft, 12 mg/L (0.7 grains per gallon).
No health-based violations since 2016
- Open report
Cross Valley Water District
Washington · serves 24,695 people · under 100 in Martha Lake
2 results above the health goal. The worst: Arsenic at 4.7 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 Alderwood Water District’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Brita Everyday Pitcher with Elite Filter (OB46, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
Certified for: Lead
PUR PLUS 11-Cup Pitcher (PPT111W)
Pitcher
- NSF listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: Lead
Water testing near Martha Lake
The 3 labs Washington certifies closest to Martha Lake, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Everett Environmental Laboratory
Everett, WA · about 10 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Precision Analytical Laboratories, LLC
Everett, WA · about 10 miles
Certified for lead and copper, metals, minerals and other inorganics
Brooks Applied Labs, LLC
Seattle, WA · about 10 miles
Certified for lead and copper, metals
Which ZIP codes are in Martha Lake: 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 Martha Lake
Other towns in Snohomish County with a page of their own.
What to do next
- Read Alderwood Water District’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water