Least Reliable Water Systems in Kansas — 2026

Out of 749 ZIP codes with data in Kansas, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Kansas Rankings

Statistic	Value
ZIP codes ranked	749
Lowest value	10/100
Median value	62/100
State	Kansas

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Reliability Score	Safety Score
1	67024	Cedar Vale	KS	10/100	58/100
2	67066	Iuka	KS	10/100	33/100
3	67418	Barnard	KS	10/100	39/100
4	67423	Beverly	KS	10/100	28/100
5	67478	Simpson	KS	10/100	37/100
6	67575	Rush Center	KS	10/100	45/100
7	67581	Sylvia	KS	10/100	58/100
8	67585	Yoder	KS	10/100	50/100
9	67657	Palco	KS	10/100	3/100
10	67837	Copeland	KS	10/100	33/100
11	67842	Ford	KS	10/100	45/100
12	66035	Highland	KS	15/100	57/100
13	66402	Auburn	KS	15/100	66/100
14	66935	Belleville	KS	15/100	33/100
15	67013	Belle Plaine	KS	15/100	48/100
16	67124	Pratt	KS	15/100	45/100
17	67420	Beloit	KS	15/100	40/100
18	67505	South Hutchinson	KS	15/100	58/100
19	67548	La Crosse	KS	15/100	28/100
20	67748	Oakley	KS	15/100	33/100
21	67870	Satanta	KS	15/100	33/100
22	67879	Tribune	KS	15/100	22/100
23	67346	Grenola	KS	16/100	68/100
24	67626	Bunker Hill	KS	16/100	62/100
25	66078	Princeton	KS	20/100	68/100
26	66949	Jewell	KS	20/100	43/100
27	66963	Randall	KS	20/100	33/100
28	67625	Bogue	KS	22/100	61/100
29	66020	Easton	KS	25/100	46/100
30	66423	Eskridge	KS	25/100	71/100
31	66441	Junction City	KS	25/100	59/100
32	66713	Baxter Springs	KS	25/100	68/100
33	66777	Toronto	KS	25/100	52/100
34	66783	Yates Center	KS	25/100	50/100
35	66853	Hamilton	KS	25/100	68/100
36	67008	Atlanta	KS	25/100	69/100
37	67023	Cambridge	KS	25/100	73/100
38	67142	Spivey	KS	25/100	56/100
39	67149	Viola	KS	25/100	64/100
40	67333	Caney	KS	25/100	69/100
41	67344	Elk City	KS	25/100	68/100
42	67361	Sedan	KS	25/100	66/100
43	67439	Ellsworth	KS	25/100	65/100
44	67446	Glen Elder	KS	25/100	45/100
45	67451	Hope	KS	25/100	29/100
46	67492	Woodbine	KS	25/100	46/100
47	67663	Plainville	KS	25/100	33/100
48	67836	Coolidge	KS	25/100	55/100
49	66843	Cedar Point	KS	26/100	74/100
50	66518	Oketo	KS	27/100	61/100
51	67547	Kinsley	KS	27/100	82/100
52	66524	Overbrook	KS	28/100	74/100
53	66528	Quenemo	KS	28/100	76/100
54	66087	Troy	KS	30/100	67/100
55	66090	Wathena	KS	30/100	68/100
56	66414	Carbondale	KS	30/100	69/100
57	66547	Wamego	KS	30/100	70/100
58	66725	Columbus	KS	30/100	70/100
59	67018	Bluff City	KS	30/100	74/100
60	67056	Halstead	KS	30/100	54/100
61	67070	Kiowa	KS	30/100	53/100
62	67352	Longton	KS	30/100	69/100
63	67360	Peru	KS	30/100	75/100
64	67427	Bushton	KS	30/100	50/100
65	67601	Hays	KS	30/100	48/100
66	67651	Natoma	KS	30/100	56/100
67	67653	Norcatur	KS	30/100	58/100
68	66032	Garnett	KS	31/100	80/100
69	66056	Mound City	KS	31/100	80/100
70	67501	Hutchinson	KS	31/100	75/100
71	67502	Hutchinson	KS	31/100	75/100
72	67504	Hutchinson	KS	31/100	80/100
73	66438	Home	KS	32/100	45/100
74	67578	Stafford	KS	32/100	78/100
75	67661	Phillipsburg	KS	32/100	61/100
76	66716	Bronson	KS	33/100	74/100
77	66851	Florence	KS	33/100	63/100
78	67450	Holyrood	KS	34/100	56/100
79	67665	Russell	KS	34/100	60/100
80	66064	Osawatomie	KS	35/100	72/100
81	66415	Centralia	KS	35/100	49/100
82	66701	Fort Scott	KS	35/100	64/100
83	66712	Arma	KS	35/100	75/100
84	66964	Republic	KS	35/100	56/100
85	67003	Anthony	KS	35/100	74/100
86	67028	Coats	KS	35/100	48/100
87	67334	Chautauqua	KS	35/100	69/100
88	67484	Tescott	KS	35/100	51/100
89	67519	Belpre	KS	35/100	49/100
90	67520	Bison	KS	35/100	53/100
91	67622	Almena	KS	35/100	60/100
92	67629	Clayton	KS	35/100	59/100
93	67667	Schoenchen	KS	35/100	53/100
94	67849	Hanston	KS	35/100	60/100
95	66756	Mulberry	KS	36/100	79/100
96	67337	Coffeyville	KS	36/100	70/100
97	66040	Lacygne	KS	37/100	42/100
98	66711	Arcadia	KS	37/100	82/100
99	66720	Chanute	KS	37/100	69/100
100	66748	Humboldt	KS	37/100	79/100

Methodology

Water system reliability scores (0-100) combine violation frequency, violation recency, resolution rate, and system size. Systems with repeated health-based violations and unresolved issues score lowest. The reliability score focuses specifically on the water utility performance, distinct from the broader Home Safety Score.

Data sources: EPA Safe Drinking Water Information System (SDWIS), FEMA National Flood Insurance Program, EPA radon zone maps, EIA electricity rates, and Consumer Confidence Reports. Last updated: 2026-04-13.

Frequently Asked Questions

What does a low water reliability score mean?

A low reliability score (below 50) indicates a water system with frequent violations, poor resolution rates, or recurring compliance issues. These systems may have aging infrastructure, inadequate treatment, or management challenges.

How is reliability different from safety score?

The reliability score focuses specifically on the water utility performance (violations, resolution, compliance). The Home Safety Score is broader, also including lead risk, radon, and flood data. A ZIP code can have a reliable water system but still have high radon or flood risk.