Sedgwick County, KS
drinking water quality
536,081 residents · 29 public water systems · 43 ZIP codes
EPA sampled 11 of 29 public water systems here, together serving about 481,743 people. The highest reading was PFOS at 4.5 ng/L at City of Park City. 1 of the sampled system was above a federal limit. Last sampled 9/4/2024.
What was found
| Compound | Highest result | Federal limit | Ratio |
|---|---|---|---|
| PFOS | 4.5 ng/L | 4 ng/L | 1.1× |
| PFHxS | 7.2 ng/L | 10 ng/L | 0.7× |
Also detected, with no federal limit set: lithium (21000 ng/L), PFBS (6.2 ng/L), PFHxA (6 ng/L), PFPeA (4.9 ng/L).
What this means
PFAS are industrial chemicals that EPA describes as breaking down only very slowly in the environment. In April 2024 EPA set the first enforceable national limits: 4 ng/L for PFOA and PFOS, 10 ng/L for PFHxS, PFNA and GenX.
These figures are county-level and come from EPA’s sampling of public water systems. They describe the worst result found in the county, not what comes out of any particular tap — that depends on which system serves the address, and on the plumbing in the building. A private well is not covered by this programme at all.
ZIP codes in Sedgwick County
67001 · 67016 · 67025 · 67026 · 67030 · 67037 · 67050 · 67052 · 67055 · 67060 · 67067 · 67101 · 67108 · 67147 · 67149 · 67202 · 67203 · 67204 · 67205 · 67206 · 67207 · 67208 · 67209 · 67210 · 67211 · 67212 · 67213 · 67214 · 67215 · 67216 · 67217 · 67218 · 67219 · 67220 · 67221 · 67223 · 67226 · 67227 · 67228 · 67230 · 67232 · 67235 · 67260
Readings are county-level, so every ZIP here shares the figure above. Search your ZIP on the map to see it in context.