Is Wilton, NH tap water safe?
The short answer
1 of the 2 utilities serving Wilton has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Wilton Water Works.
Milford Water Utilities Dept, which serves the most people here, has 3 results above the health goal. The worst: Lead at 2.0 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 Wilton’s ZIP codes, from EPA’s estimates.
- Open report
Milford Water Utilities Dept
New Hampshire · serves 9,500 people · about 330 in Wilton
3 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Wilton Water Works
New Hampshire · serves 1,790 people · about 110 in Wilton
1 result above the action level. The worst: Lead at 63 ppb, above the action level.
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 Milford Water Utilities Dept’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 Wilton
The 3 labs New Hampshire certifies closest to Wilton, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Nelson Analytical LLC
Manchester, NH · about 19 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
Eurofins Derry
Derry, NH · about 22 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS
Keene City Laboratory
Swanzey, NH · about 29 miles
Certified for bacteria
Which ZIP codes are in Wilton: 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: New Hampshire ELAP, drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Wilton
Other towns in Hillsborough County with a page of their own.
What to do next
- Read Milford Water Utilities 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