Least Reliable Water Systems in Virginia — 2026

Out of 1,228 ZIP codes with data in Virginia, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Virginia Rankings

Statistic	Value
ZIP codes ranked	1,228
Lowest value	10/100
Median value	80/100
State	Virginia

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Reliability Score	Safety Score
1	23314	Carrollton	VA	10/100	65/100
2	22427	Bowling Green	VA	15/100	66/100
3	22947	Keswick	VA	25/100	69/100
4	22949	Lovingston	VA	25/100	72/100
5	23109	Mathews	VA	26/100	68/100
6	22611	Berryville	VA	35/100	44/100
7	24290	Weber City	VA	35/100	61/100
8	24315	Bland	VA	35/100	61/100
9	22664	Woodstock	VA	40/100	47/100
10	23868	Lawrenceville	VA	40/100	60/100
11	23921	Buckingham	VA	40/100	44/100
12	22482	Kilmarnock	VA	45/100	78/100
13	22610	Bentonville	VA	45/100	68/100
14	22727	Madison	VA	45/100	55/100
15	23803	Petersburg	VA	45/100	56/100
16	23805	Petersburg	VA	45/100	56/100
17	24112	Martinsville	VA	45/100	54/100
18	24124	Narrows	VA	45/100	61/100
19	24134	Pearisburg	VA	45/100	55/100
20	24382	Wytheville	VA	45/100	61/100
21	24245	Dungannon	VA	46/100	67/100
22	23093	Louisa	VA	47/100	66/100
23	23824	Blackstone	VA	48/100	63/100
24	24557	Gretna	VA	48/100	61/100
25	20117	Middleburg	VA	49/100	78/100
26	23930	Crewe	VA	49/100	56/100
27	24426	Covington	VA	49/100	50/100
28	22747	Washington	VA	50/100	77/100
29	22943	Greenwood	VA	50/100	77/100
30	24225	Cleveland	VA	50/100	51/100
31	24366	Rocky Gap	VA	50/100	51/100
32	22973	Stanardsville	VA	51/100	59/100
33	24228	Clintwood	VA	51/100	77/100
34	22733	Rapidan	VA	52/100	82/100
35	24084	Dublin	VA	52/100	66/100
36	24127	New Castle	VA	52/100	55/100
37	24422	Clifton Forge	VA	52/100	59/100
38	24529	Buffalo Junction	VA	52/100	71/100
39	23337	Wallops Island	VA	53/100	85/100
40	22968	Ruckersville	VA	54/100	78/100
41	22473	Heathsville	VA	55/100	87/100
42	22942	Gordonsville	VA	55/100	48/100
43	23022	Bremo Bluff	VA	55/100	61/100
44	23030	Charles City	VA	55/100	91/100
45	23140	Providence Forge	VA	55/100	86/100
46	23829	Capron	VA	55/100	94/100
47	23847	Emporia	VA	55/100	81/100
48	24055	Bassett	VA	55/100	58/100
49	24093	Glen Lyn	VA	55/100	62/100
50	24150	Ripplemead	VA	55/100	62/100
51	24165	Spencer	VA	55/100	63/100
52	24328	Fancy Gap	VA	55/100	61/100
53	24363	Mouth Of Wilson	VA	55/100	44/100
54	24380	Willis	VA	55/100	79/100
55	24136	Pembroke	VA	57/100	64/100
56	24333	Galax	VA	57/100	82/100
57	24572	Madison Heights	VA	57/100	79/100
58	23840	Dewitt	VA	58/100	60/100
59	23071	Hartfield	VA	59/100	88/100
60	22842	Mount Jackson	VA	60/100	60/100
61	23063	Goochland	VA	60/100	66/100
62	23430	Smithfield	VA	60/100	81/100
63	24121	Moneta	VA	60/100	86/100
64	24301	Pulaski	VA	60/100	61/100
65	24343	Hillsville	VA	60/100	55/100
66	24348	Independence	VA	60/100	79/100
67	24354	Marion	VA	60/100	57/100
68	24630	North Tazewell	VA	60/100	62/100
69	20135	Bluemont	VA	62/100	57/100
70	22539	Reedville	VA	62/100	89/100
71	23405	Machipongo	VA	62/100	94/100
72	23440	Tangier	VA	62/100	84/100
73	24656	Vansant	VA	63/100	73/100
74	22641	Strasburg	VA	64/100	68/100
75	22657	Strasburg	VA	64/100	63/100
76	22851	Stanley	VA	64/100	63/100
77	23947	Keysville	VA	64/100	71/100
78	20105	Aldie	VA	65/100	83/100
79	22435	Callao	VA	65/100	89/100
80	22480	Irvington	VA	65/100	88/100
81	22503	Lancaster	VA	65/100	85/100
82	22701	Culpeper	VA	65/100	78/100
83	22932	Crozet	VA	65/100	81/100
84	22940	Free Union	VA	65/100	82/100
85	23005	Ashland	VA	65/100	91/100
86	23059	Glen Allen	VA	65/100	93/100
87	23060	Glen Allen	VA	65/100	88/100
88	23111	Mechanicsville	VA	65/100	94/100

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.