Is Maple Falls, WA tap water safe?
The short answer
None of the 3 utilities serving Maple Falls has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Washington’s records.
Columbia Valley Water District, which serves the most people here, has 2 results above the health goal. The worst: Lead at 1.5 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
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 Maple Falls’s ZIP codes, from EPA’s estimates.
- Open report
Columbia Valley Water District
Washington · serves 2,648 people · under 100 in Maple Falls
2 results above the health goal. The worst: Lead at 1.5 ppb, above the health goal.
No health-based violations since 2016
- Open report
Whatcom County Water Dist 13
Washington · serves 795 people · under 100 in Maple Falls
1 result above the health goal. The worst: Lead at 1.3 ppb, above the health goal. Hardness: moderately hard to hard depending on the source, 78 to 130 mg/L (4.6 to 7.6 grains per gallon).
No health-based violations since 2016
- Open report
Maple Falls Water Coop
Washington · serves 222 people · under 100 in Maple Falls
1 result above the health goal. The worst: Lead at 0.7 ppb, above the health goal. Hardness: moderately hard, 80 mg/L (4.7 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 Columbia Valley Water District’s water, which serves the most people here. Another utility’s report names what handles its own results.
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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: Lead, Arsenic
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: Lead, Arsenic
Water testing near Maple Falls
The 3 labs Washington certifies closest to Maple Falls, 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 27 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 31 miles
Certified for bacteria, nitrate, minerals and other inorganics, disinfection byproducts
Freshwater Analytical Labs, LLC
Arlington, WA · about 47 miles
Certified for bacteria
Which ZIP codes are in Maple Falls: 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 Maple Falls
Other towns in Whatcom County with a page of their own.
What to do next
- Read Columbia Valley 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