Least Reliable Water Systems in Vermont — 2026

Out of 308 ZIP codes with data in Vermont, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All Vermont Rankings

Statistic	Value
ZIP codes ranked	308
Lowest value	10/100
Median value	73/100
State	Vermont

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Reliability Score	Safety Score
1	05673	Waitsfield	VT	10/100	53/100
2	05354	Vernon	VT	20/100	63/100
3	05462	Huntington	VT	21/100	78/100
4	05649	East Barre	VT	22/100	78/100
5	05866	Sheffield	VT	22/100	78/100
6	05492	Waterville	VT	26/100	68/100
7	05874	Westfield	VT	27/100	79/100
8	05822	Barton	VT	30/100	64/100
9	05839	Glover	VT	30/100	74/100
10	05001	White River Junction	VT	32/100	74/100
11	05821	Barnet	VT	32/100	75/100
12	05148	Londonderry	VT	34/100	73/100
13	05444	Cambridge	VT	35/100	70/100
14	05488	Swanton	VT	35/100	70/100
15	05651	East Montpelier	VT	35/100	69/100
16	05034	Bridgewater	VT	37/100	79/100
17	05060	Randolph	VT	37/100	79/100
18	05676	Waterbury	VT	37/100	69/100
19	05403	South Burlington	VT	40/100	81/100
20	05661	Morrisville	VT	40/100	72/100
21	05667	Plainfield	VT	40/100	65/100
22	05675	Washington	VT	40/100	79/100
23	05903	Canaan	VT	40/100	77/100
24	05255	Manchester Center	VT	41/100	72/100
25	05056	Plymouth	VT	42/100	51/100
26	05158	Westminster	VT	42/100	74/100
27	05440	Alburgh	VT	42/100	91/100
28	05674	Warren	VT	42/100	49/100
29	05855	Newport	VT	44/100	78/100
30	05401	Burlington	VT	45/100	91/100
31	05405	Burlington	VT	45/100	95/100
32	05408	Burlington	VT	45/100	86/100
33	05648	Calais	VT	45/100	74/100
34	05650	East Calais	VT	45/100	74/100
35	05751	Killington	VT	45/100	68/100
36	05824	Concord	VT	45/100	79/100
37	05837	East Haven	VT	45/100	81/100
38	05860	Orleans	VT	45/100	74/100
39	05251	Dorset	VT	47/100	79/100
40	05736	Center Rutland	VT	47/100	82/100
41	05739	Danby	VT	47/100	79/100
42	05762	Pittsfield	VT	47/100	82/100
43	05149	Ludlow	VT	50/100	63/100
44	05340	Bondville	VT	50/100	50/100
45	05672	Stowe	VT	50/100	47/100
46	05682	Worcester	VT	50/100	76/100
47	05826	Craftsbury	VT	50/100	78/100
48	05043	East Thetford	VT	52/100	78/100
49	05439	Colchester	VT	52/100	98/100
50	05446	Colchester	VT	52/100	84/100
51	05468	Milton	VT	52/100	86/100
52	05641	Barre	VT	52/100	67/100
53	05765	Proctor	VT	52/100	74/100
54	05748	Hancock	VT	53/100	76/100
55	05254	Manchester	VT	54/100	77/100
56	05048	Hartland	VT	55/100	79/100
57	05052	North Hartland	VT	55/100	80/100
58	05091	Woodstock	VT	55/100	68/100
59	05154	Saxtons River	VT	55/100	80/100
60	05261	Pownal	VT	55/100	78/100
61	05356	West Dover	VT	55/100	73/100
62	05443	Bristol	VT	55/100	72/100
63	05487	Starksboro	VT	55/100	79/100
64	05494	Westford	VT	55/100	92/100
65	05602	Montpelier	VT	55/100	63/100
66	05655	Hyde Park	VT	55/100	80/100
67	05767	Rochester	VT	55/100	81/100
68	05820	Albany	VT	55/100	81/100
69	05836	East Hardwick	VT	55/100	81/100
70	05068	South Royalton	VT	57/100	73/100
71	05454	Fairfax	VT	57/100	82/100
72	05701	Rutland	VT	57/100	68/100
73	05450	Enosburg Falls	VT	58/100	76/100
74	05089	Windsor	VT	60/100	75/100
75	05143	Chester	VT	60/100	69/100
76	05201	Bennington	VT	60/100	55/100
77	05301	Brattleboro	VT	60/100	75/100
78	05361	Whitingham	VT	60/100	79/100
79	05363	Wilmington	VT	60/100	73/100
80	05447	East Berkshire	VT	60/100	81/100

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.