Is Frontenac, KS tap water safe?
The short answer
1 of the 3 utilities serving Frontenac has 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 Frontenac.
City of Frontenac, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 125 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
The water from City of Frontenac is very hard, 295 mg/L (17.3 grains per gallon). How Kansas’s water compares.
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 Frontenac’s ZIP codes, from EPA’s estimates.
- Open report
City of Frontenac
Kansas · serves 3,395 people · about 2,100 in Frontenac
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 125 ppb, above EPA’s health benchmark. Hardness: very hard, 295 mg/L (17.3 grains per gallon).
12 health-based violations since 2016
- Open report
City of Pittsburg
Kansas · serves 20,738 people · about 160 in Frontenac
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 204 ppb, above EPA’s health benchmark. Hardness: hard, 130 mg/L (7.6 grains per gallon).
No health-based violations since 2016
- Open report
Crawford Co RWD 1
Kansas · serves 430 people · under 100 in Frontenac
1 result above the health goal. The worst: Lead at 2.1 ppb, above the health goal. Hardness: very hard, 185 mg/L (10.8 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 City of Frontenac’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: 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: 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: Arsenic
Water testing near Frontenac
The lab Kansas certifies closest to Frontenac, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Pace Analytical Services, Inc - Frontenac
Frontenac, KS · about 2 miles
Certified for bacteria
Which ZIP codes are in Frontenac: 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 Frontenac
Other towns in Crawford County with a page of their own.
What to do next
- Read City of Frontenac’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water