Is Marietta-Alderwood, WA tap water safe?
The short answer
None of the 4 utilities serving Marietta-Alderwood has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records.
City of Bellingham - Water Division, which serves the most people here, has 1 result above the health goal. The worst: Lead at 3.4 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from City of Bellingham - Water Division is soft, 20 mg/L (1.2 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 Marietta-Alderwood’s ZIP codes, from EPA’s estimates.
- Open report
City of Bellingham - Water Division
Washington · serves 141,127 people · about 11,600 in Marietta-Alderwood
1 result above the health goal. The worst: Lead at 3.4 ppb, above the health goal. Hardness: soft, 20 mg/L (1.2 grains per gallon).
No health-based violations since 2016
- Open report
Whatcom County Water Dist #2
Washington · serves 1,353 people · about 320 in Marietta-Alderwood
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Ferndale
Washington · serves 19,305 people · under 100 in Marietta-Alderwood
2 results above the health goal. The worst: Lead at 5.6 ppb, above the health goal.
No health-based violations since 2016
- Open report
Deer Creek Water Assoc.
Washington · serves 2,000 people · under 100 in Marietta-Alderwood
2 results above the health goal. The worst: Arsenic at 3.1 ppb, above the health goal. Hardness: hard, 174 mg/L (10.2 grains per gallon).
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 City of Bellingham - Water Division’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 Marietta-Alderwood
The 3 labs Washington certifies closest to Marietta-Alderwood, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Exact Scientific Services, Inc.
Ferndale, WA · about 6 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Eurofins DW and WW West, Washington Laboratory
Burlington, WA · about 23 miles
Certified for bacteria, nitrate, minerals and other inorganics, disinfection byproducts
Freshwater Analytical Labs, LLC
Arlington, WA · about 48 miles
Certified for bacteria
Which ZIP codes are in Marietta-Alderwood: 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 Marietta-Alderwood
Other towns in Whatcom County with a page of their own.
What to do next
- Read City of Bellingham - Water Division’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