Kansas utilities whose water varies in hardness.

Water in more than one band, depending on where or when it was sampled: each is given as its range, softest to hardest. 39 utilities serving 411,551 people as they report it, largest first.

All 39, by people served

Kansas utilities whose water varies in hardness, 1 to 39
Utility	Based in	Serves	Hardness, mg/L	Grains per gallon
City of Olathe	Olathe	143,014	110 to 160	6.4 to 9.4
City of Lawrence	Lawrence	95,256	36 to 74	2.1 to 4.3
City of Salina	Salina	46,481	110 to 140	6.4 to 8.2
Leavenworth Water Department	Leavenworth	38,757	120 to 150	7 to 8.8
City of Garden City	Garden City	35,126	150 to 910	8.8 to 53.2
City of Bonner Springs	Bonner Springs	7,805	120 to 470	7 to 27.5
Pottawatomie Co RWD 1	Wamego	7,535	88 to 130	5.1 to 7.6
City of Colby	Colby	5,516	170 to 295	9.9 to 17.3
Douglas Co RWD 3	Berryton	4,663	110 to 160	6.4 to 9.4
City of Russell	Russell	4,388	110 to 210	6.4 to 12.3
City of Clearwater	Clearwater	2,626	125 to 305	7.3 to 17.8
City of Lakin	Lakin	2,166	91 to 270	5.3 to 15.8
Ottawa Co RWD 2	Salina	1,794	84 to 190	4.9 to 11.1
City of Oberlin	Oberlin	1,639	170 to 315	9.9 to 18.4
City of Meade	Meade	1,506	170 to 185	9.9 to 10.8
City of Hoxie	Hoxie	1,218	180 to 285	10.5 to 16.7
Washington Co RWD 1	Hanover	1,093	140 to 430	8.2 to 25.1
City of Plains	Plains	1,023	180 to 210	10.5 to 12.3
City of Montezuma	Montezuma	951	120 to 260	7 to 15.2
City of Garden Plain	Garden Plain	941	120 to 130	7 to 7.6
City of Stafford	Stafford	936	165 to 270	9.6 to 15.8
Osage Co RWD 3	Vassar	900	110 to 150	6.4 to 8.8
Dickinson Co RWD 1	Talmage	879	160 to 230	9.4 to 13.5
City of Spearville	Spearville	796	150 to 440	8.8 to 25.7
City of Tribune	Tribune	784	180 to 220	10.5 to 12.9
City of Pretty Prairie	Pretty Prairie	655	49 to 185	2.8 to 10.8
City of Bennington	Bennington	635	160 to 465	9.4 to 27.2
Osage Co RWD 4	Waverly	500	12 to 86	0.7 to 5
City of Macksville	Macksville	471	180 to 190	10.5 to 11.1
City of Brewster	Brewster	290	160 to 210	9.4 to 12.3
City of Tescott	Tescott	271	100 to 390	5.8 to 22.8
Neighbors of Walnut Grove, LLC	Manhattan	256	120 to 135	7 to 7.9
City of Paxico	Paxico	212	120 to 440	7 to 25.7
City of McCracken	McCracken	154	69 to 475	4 to 27.8
Reno Co RWD 1	Hutchinson	150	150 to 210	8.8 to 12.3
City of Preston	Preston	120	165 to 230	9.6 to 13.5
City of Elmdale	Elmdale	42	81 to 250	4.7 to 14.6
Public Wholesale WSD 23	Fredonia	1	73 to 220	4.3 to 12.9
Wheatland Electric Cooperative Inc	Garden City	1	77 to 160	4.5 to 9.4

Source: Kansas Department of Health and Environment, Public Water Supply Section, 552 utilities, results from Jan. 5, 2015 to Sept. 2, 2026, read Oct. 18, 2026. Each sampling point is taken at its median; a figure is typical where every point falls in one band.

Bands are the U.S. Geological Survey’s, at 17.1 mg/L to the grain. People served is what each utility reports; where one sells water to another, the same people can be counted twice. How hardness is measured here.

All 39, by people served

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