2026 Rankings

Least Reliable Water Systems in West Virginia — 2026

Last updated: April 13, 2026

855 ZIP codes ranked by Reliability Score #1: ZIP 25841 (Flat Top, WV) - 10/100
Lead Violations Lowest Score Safest Flood Risk Energy Cost Radon PFAS Reliability EJ Index Homebuyer Risk CO & Gas Safest Gas Remediation Burden Unresolved Violations (by Utility) Water Equity (by Utility)

Out of 855 ZIP codes with data in West Virginia, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All West Virginia Rankings

Statistic Value
ZIP codes ranked 855
Lowest value 10/100
Median value 80/100
State West Virginia

100 Lowest-Ranked ZIP Codes

Rank ZIP Code City State Reliability Score Safety Score
1 25841 Flat Top WV 10/100 23/100
2 25918 Shady Spring WV 10/100 38/100
3 24870 Oceana WV 15/100 60/100
4 25003 Alum Creek WV 15/100 53/100
5 25007 Arnett WV 15/100 58/100
6 25414 Charles Town WV 15/100 40/100
7 25514 Fort Gay WV 15/100 58/100
8 25601 Logan WV 15/100 58/100
9 25685 Naugatuck WV 15/100 56/100
10 25813 Beaver WV 15/100 58/100
11 25865 Lester WV 15/100 40/100
12 25902 Odd WV 15/100 53/100
13 25920 Slab Fork WV 15/100 59/100
14 25921 Sophia WV 15/100 53/100
15 25962 Rainelle WV 15/100 35/100
16 26159 Paden City WV 15/100 58/100
17 26241 Elkins WV 15/100 50/100
18 26362 Harrisville WV 15/100 64/100
19 26851 Wardensville WV 15/100 45/100
20 24701 Bluefield WV 18/100 53/100
21 24901 Lewisburg WV 18/100 49/100
22 24945 Greenville WV 18/100 50/100
23 24981 Talcott WV 18/100 44/100
24 25434 Paw Paw WV 18/100 55/100
25 26155 New Martinsville WV 18/100 48/100
26 26264 Durbin WV 18/100 63/100
27 26520 Arthurdale WV 18/100 54/100
28 25667 Chattaroy WV 19/100 76/100
29 24818 Brenton WV 20/100 60/100
30 25427 Hedgesville WV 21/100 51/100
31 25508 Chapmanville WV 21/100 73/100
32 25661 Williamson WV 21/100 68/100
33 26136 Big Bend WV 21/100 72/100
34 26202 Fenwick WV 21/100 71/100
35 26261 Richwood WV 21/100 36/100
36 26426 Salem WV 21/100 69/100
37 26656 Belva WV 21/100 71/100
38 26690 Swiss WV 21/100 71/100
39 24938 Frankford WV 22/100 53/100
40 25676 Lenore WV 22/100 81/100
41 24970 Ronceverte WV 23/100 45/100
42 25043 Clay WV 24/100 70/100
43 25425 Harpers Ferry WV 24/100 63/100
44 25570 Wayne WV 24/100 65/100
45 26033 Cameron WV 24/100 63/100
46 26047 New Cumberland WV 24/100 58/100
47 26301 Clarksburg WV 24/100 60/100
48 26431 Shinnston WV 24/100 71/100
49 26448 Wallace WV 24/100 70/100
50 26739 Mount Storm WV 24/100 60/100
51 26757 Romney WV 24/100 57/100
52 24801 Welch WV 25/100 55/100
53 24946 Hillsboro WV 25/100 51/100
54 25670 Delbarton WV 25/100 71/100
55 25915 Rhodell WV 25/100 67/100
56 26060 Valley Grove WV 25/100 40/100
57 26147 Grantsville WV 25/100 48/100
58 26205 Craigsville WV 25/100 63/100
59 26253 Beverly WV 25/100 70/100
60 26271 Hendricks WV 25/100 69/100
61 26280 Mill Creek WV 25/100 58/100
62 26292 Thomas WV 25/100 74/100
63 26337 Cairo WV 25/100 64/100
64 26451 West Milford WV 25/100 73/100
65 26572 Four States WV 25/100 65/100
66 26750 Piedmont WV 25/100 38/100
67 25270 Reedy WV 26/100 72/100
68 24851 Justice WV 27/100 91/100
69 24861 Maybeury WV 27/100 91/100
70 24892 War WV 27/100 81/100
71 25177 Saint Albans WV 27/100 81/100
72 25401 Martinsburg WV 27/100 56/100
73 25403 Martinsburg WV 27/100 66/100
74 25404 Martinsburg WV 27/100 61/100
75 25405 Martinsburg WV 27/100 66/100
76 25521 Griffithsville WV 27/100 69/100
77 25550 Point Pleasant WV 27/100 74/100
78 25674 Kermit WV 27/100 72/100
79 25690 Ragland WV 27/100 91/100
80 25696 Varney WV 27/100 77/100
81 25904 Pax WV 27/100 74/100
82 26034 Chester WV 27/100 64/100
83 26037 Follansbee WV 27/100 64/100
84 26041 Moundsville WV 27/100 54/100
85 26062 Weirton WV 27/100 54/100
86 26257 Coalton WV 27/100 82/100
87 26260 Davis WV 27/100 70/100
88 26415 Pennsboro WV 27/100 77/100
89 26541 Maidsville WV 27/100 61/100
90 26571 Farmington WV 27/100 74/100
91 26679 Mount Nebo WV 27/100 82/100
92 26704 Augusta WV 27/100 61/100
93 26722 Green Spring WV 27/100 61/100

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.

Explore More Rankings

How this ranking is calculated, data sources, and limitations: Rankings Methodology →

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Disclaimer: Rankings are based on EPA, FEMA, and federal agency data. They reflect historical patterns and risk indicators, not necessarily current conditions. For the most current information, contact your local water utility or request a Consumer Confidence Report.

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