Is Princeton, KS tap water safe?
The short answer
2 of the 2 utilities serving Princeton have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Kansas’s records: City of Princeton and Franklin Co RWD 3.
City of Princeton, which serves the most people here, has 2 results above the legal limit. The worst: Haloacetic acids (HAA5) at 130 ppb, above the legal limit.
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 Princeton’s ZIP codes, from EPA’s estimates.
- Open report
City of Princeton
Kansas · serves 252 people · under 100 in Princeton
2 results above the legal limit. The worst: Haloacetic acids (HAA5) at 130 ppb, above the legal limit.
9 health-based violations since 2016
- Open report
Franklin Co RWD 3
Kansas · serves 85 people · under 100 in Princeton
2 results above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 113 ppb, above the legal limit.
11 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 Princeton’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM)
Brita Hub Countertop Water Filter System (87340)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM)
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM)
Water testing near Princeton
The 3 labs Kansas certifies closest to Princeton, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Johnson County Water Quality Laboratory
Olathe, KS · about 35 miles
Certified for bacteria, nitrate, lead and copper
Olathe Environmental Laboratory
Olathe, KS · about 35 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Eurofins Kansas City
Lenexa, KS · about 43 miles
Certified for bacteria
ZIP codes in Princeton
Which ZIP codes are in Princeton: 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: Kansas Department of Health and Environment, drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Princeton
Towns nearby with a page of their own.
What to do next
- Read City of Princeton’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Haloacetic acids (HAA5)What it does to health, where it comes from, and the certification claim that addresses it.About Haloacetic acids (HAA5)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water