Is Bothell, WA tap water safe?
The short answer
2 of the 5 utilities serving Bothell have 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 and Northshore Utility 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 Bothell’s ZIP codes, from EPA’s estimates.
- Open report
Alderwood Water District
Washington · serves 245,715 people · about 20,400 in Bothell
1 result above the action level. The worst: Lead at 28 ppb, above the action level.
No health-based violations since 2016
- Open report
City of Bothell Water
Washington · serves 33,643 people · about 15,800 in Bothell
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Northshore Utility District
Washington · serves 99,789 people · about 10,300 in Bothell
1 result above the action level. The worst: Lead at 36 ppb, above the action level.
No health-based violations since 2016
- Open report
Woodinville Water District
Washington · serves 66,699 people · about 1,700 in Bothell
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Wandering Creek Homeowners Assoc
Washington · serves 457 people · about 300 in Bothell
Nothing in its records is above a 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 Bothell
The 3 labs Washington certifies closest to Bothell, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Brooks Applied Labs, LLC
Seattle, WA · about 6 miles
Certified for lead and copper, metals
IEH Analytical Laboratories
Seattle, WA · about 6 miles
Certified for nitrate, lead and copper, metals, minerals and other inorganics, PFAS
OnSite Environmental, Inc.
Redmond, WA · about 7 miles
Certified for lead and copper, metals, minerals and other inorganics
Which ZIP codes are in Bothell: 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 Bothell
Other towns in King 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