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EWG's Tap Water Database — 2021 UPDATE

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Largest utilities by state:

Utility name City People served
City of Arkansas City Arkansas City Population served: 11,793
City of Atchison Atchison Population served: 10,636
City of Dodge City Dodge City Population served: 27,329
City of El Dorado El Dorado Population served: 12,935
City of Emporia Emporia Population served: 24,765
City of Garden City Garden City Population served: 26,546
City of Gardner Gardner Population served: 21,871
City of Great Bend Great Bend Population served: 15,170
City of Hays Hays Population served: 20,852
City of Haysville Haysville Population served: 11,264
City of Hutchinson Hutchinson Population served: 40,623
City of Junction City Junction City Population served: 22,120
City of Lawrence Lawrence Population served: 97,286
City of Liberal Liberal Population served: 39,321
City of Manhattan Manhattan Population served: 54,959
City of McPherson Mcpherson Population served: 13,077
City of Newton Newton Population served: 18,746
City of Olathe Olathe Population served: 139,605
City of Ottawa Ottawa Population served: 12,267
City of Pittsburg Pittsburg Population served: 20,178
City of Salina Salina Population served: 46,716
City of Topeka Topeka Population served: 165,000
City of Wichita Wichita Population served: 389,225
City of Winfield Winfield Population served: 12,057
El Paso Water Company Derby Population served: 24,721
Fort Leavenworth American Water Ent Inc Fort Leavenworth Population served: 12,934
Fort Riley Fort Riley Population served: 35,784
Kansas City Board of Public Utilities Kansas City Population served: 152,958
Larned State Hospital Larned Population served: 11,964
Leavenworth Water Department Leavenworth Population served: 36,062
Sedgwick, City of Sedgwick, City Of Population served: 10,426
Shawnee County RWD 4C Topeka Population served: 12,000
University of Kansas Lawrence Population served: 35,000
Water District 1 of Johnson County Kansas City Population served: 443,000
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