Is Wilmington, MA tap water safe?
The short answer
Wilmington Water Dept serves Wilmington. In EPA’s and Massachusetts’s records it has 2 results above the health goal, and 1 health-based violation since 2016.
The worst: Lead at 1.1 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from Wilmington Water Dept is hard, typically 145 mg/L (8.5 grains per gallon). How Massachusetts’s water compares.
Some homes in a town are on private wells or a small system of their own. The name on your water bill tells you which is yours.
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Wilmington Water Dept’s water.
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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 Wilmington
The 3 labs Massachusetts certifies closest to Wilmington, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Eurofins Danvers
Danvers, MA · about 11 miles
Certified for bacteria
New England Chromachem Inc.
Salem, MA · about 15 miles
Certified for organic chemicals, disinfection byproducts, PFAS
Mass DPH Environmental Chemistry Lab
Jamaica Plain, MA · about 18 miles
Certified for lead and copper, metals
ZIP codes in Wilmington
Which ZIP codes are in Wilmington: 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: MassDEP Online Searchable Laboratory Certification Listing, potable water; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Wilmington
Other towns in Middlesex County with a page of their own.
What to do next
- Read Wilmington Water Dept’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