Is Winfield, KS tap water safe?
The short answer
None of the 5 utilities serving Winfield 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 Winfield, which serves the most people here, has 2 results above the health goal. The worst: Lead at 3.2 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
The water from City of Winfield is hard, 130 mg/L (7.6 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 Winfield’s ZIP codes, from EPA’s estimates.
- Open report
City of Winfield
Kansas · serves 11,726 people · about 450 in Winfield
2 results above the health goal. The worst: Lead at 3.2 ppb, above the health goal. Hardness: hard, 130 mg/L (7.6 grains per gallon).
No health-based violations since 2016
- Open report
Cowley Co RWD 5
Kansas · serves 2,000 people · under 100 in Winfield
1 result above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Cowley Co RWD 4
Kansas · serves 500 people · under 100 in Winfield
1 result above the health goal. The worst: Lead at 1.1 ppb, above the health goal.
No health-based violations since 2016
- Open report
Cowley Co RWD 2
Kansas · serves 600 people · under 100 in Winfield
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Cowley Co RWD 8
Kansas · serves 50 people · lists Winfield among the places it serves
2 results above the limit’s level with no violation recorded. The worst: Haloacetic acids (HAA5) at 100 ppb, above the limit’s level, no violation.
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 Winfield’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 Winfield
The lab Kansas certifies closest to Winfield, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Meridian Analytical Laboratory - Wichita
Wichita, KS · about 32 miles
Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts
Which ZIP codes are in Winfield: 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 Winfield
Towns nearby with a page of their own.
What to do next
- Read City of Winfield’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