Sedgwick County Water Quality: 4 Cities Ranked by the Records

Name: Sedgwick County Water Quality Data (2026)
Creator: PurityMap
License: https://creativecommons.org/licenses/by/4.0/

Sedgwick County, Kansas: 4 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my system Open on the map Private wells in Sedgwick County

Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

LithiumDetected in 4 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest31.8 µg/L

DERBY, CITY OF31.8 µg/LSample date: 2023-01-10 to 2023-10-02
WICHITA, CITY OF21.1 µg/LSample date: 2023-02-21 to 2023-11-07
BEL AIRE, CITY OF15 µg/LSample date: 2024-01-22 to 2024-10-22
HAYSVILLE, CITY OF13.2 µg/LSample date: 2024-07-22 to 2025-01-22

Copper (90th percentile)Detected in 1 system1.3 mg/L federal action level · US EPAHighest1.687 mg/L

HAYSVILLE, CITY OF1.687 mg/LMonitoring period: 2026–2026 (still open)

Lead (90th percentile)Detected in 4 systems15 µg/L federal action level · US EPAHighest3.7 µg/L

BEL AIRE, CITY OF3.7 µg/LMonitoring period: 2022–2024
WICHITA, CITY OF1.42 µg/LMonitoring period: 2022–2024
DERBY, CITY OF1.3 µg/LMonitoring period: 2022–2024
HAYSVILLE, CITY OF1.26 µg/LMonitoring period: 2026–2026 (still open)

29 PFAS tested, none detected in any systemShow

Tested in these 4 systems: BEL AIRE, CITY OF, DERBY, CITY OF, HAYSVILLE, CITY OF, WICHITA, CITY OF

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorobutanoic acid (PFBA)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

4 cities

Cities ranked by the records

1
DerbyDERBY, CITY OF
No PFAS detectedLead below action level
Open city report →
2
WichitaWICHITA, CITY OF
No PFAS detectedLead below action level
Open city report →
3
Bel AireBEL AIRE, CITY OF
No PFAS detectedLead below action level
Open city report →
4
HaysvilleHAYSVILLE, CITY OF
No PFAS detectedLead below action level
Open city report →

Showing 4 of 4 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.

PFAS in Sedgwick CountyPFAS detected in 0 of 4 cities; none had a sample above a 2024 EPA limit

4.0 ng/L federal MCL · PFOS, ng/LPFAS in Kansas

Lead

0of 4 cities above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in Kansas

Who supplies the county

Largest water systems

WichitaWICHITA, CITY OF · KS2017308
395,699 served
DerbyDERBY, CITY OF · KS2017328
25,413 served
HaysvilleHAYSVILLE, CITY OF · KS2017322
11,315 served
Bel AireBEL AIRE, CITY OF · KS2017304
8,448 served

Questions

Frequently asked

How does Sedgwick County tap water compare across cities?

PurityMap ranks 4 cities in Sedgwick County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Derby's main water system: DERBY, CITY OF · PWSID KS2017328 · Purity Score 99 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Sedgwick County cities had a PFAS sample above a 2024 EPA limit?

None of the 4 Sedgwick County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 0.

Is there lead in Sedgwick County tap water?

Utilities report lead as a 90th-percentile result from home taps. 4 of 4 Sedgwick County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

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