Is Hamilton Square, NJ tap water safe?
The short answer
1 of the 2 utilities serving Hamilton Square has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Trenton Water Works.
Aqua NJ - Hamilton Square, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029, 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 11.6 ppt, above EPA’s new limit, which takes effect in 2029.
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 Hamilton Square’s ZIP codes, from EPA’s estimates.
- Open report
Aqua NJ - Hamilton Square
New Jersey · serves 39,128 people · about 9,300 in Hamilton Square
2 results above EPA’s new limit, which takes effect in 2029, 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 11.6 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Trenton Water Works
New Jersey · serves 217,000 people · about 1,600 in Hamilton Square
1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 58.8 ppb, above the legal limit.
20 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 Aqua NJ - Hamilton Square’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOA, PFOS, Arsenic
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: PFOA, PFOS, 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: PFOA, PFOS, Arsenic
Water testing near Hamilton Square
The 3 labs New Jersey certifies closest to Hamilton Square, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Leco Laboratory
Hamilton, NJ · about 2 miles
Sadat Associates Inc.
Ewing, NJ · about 8 miles
Innovative Water Solutions Laboratories
Bordentown, NJ · about 10 miles
Which ZIP codes are in Hamilton Square: 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: NJDEP Office of Quality Assurance, certified drinking water labs; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Hamilton Square
Other towns in Mercer County with a page of their own.
What to do next
- Read Aqua NJ - Hamilton Square’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOARanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water