Least Reliable Water Systems in New York — 2026

Out of 2,186 ZIP codes with data in New York, these are the lowest-ranked areas for reliability score. See also: National Least Reliable Water Systems in America | All New York Rankings

Statistic	Value
ZIP codes ranked	2,186
Lowest value	10/100
Median value	75/100
State	New York

100 Lowest-Ranked ZIP Codes

Rank	ZIP Code	City	State	Reliability Score	Safety Score
1	10980	Stony Point	NY	10/100	60/100
2	11201	Brooklyn	NY	10/100	62/100
3	11203	Brooklyn	NY	10/100	62/100
4	11204	Brooklyn	NY	10/100	62/100
5	11205	Brooklyn	NY	10/100	67/100
6	11206	Brooklyn	NY	10/100	62/100
7	11207	Brooklyn	NY	10/100	62/100
8	11208	Brooklyn	NY	10/100	62/100
9	11209	Brooklyn	NY	10/100	57/100
10	11210	Brooklyn	NY	10/100	62/100
11	11211	Brooklyn	NY	10/100	57/100
12	11212	Brooklyn	NY	10/100	67/100
13	11213	Brooklyn	NY	10/100	67/100
14	11214	Brooklyn	NY	10/100	57/100
15	11215	Brooklyn	NY	10/100	57/100
16	11216	Brooklyn	NY	10/100	67/100
17	11217	Brooklyn	NY	10/100	62/100
18	11218	Brooklyn	NY	10/100	62/100
19	11219	Brooklyn	NY	10/100	57/100
20	11220	Brooklyn	NY	10/100	62/100
21	11221	Brooklyn	NY	10/100	67/100
22	11222	Brooklyn	NY	10/100	57/100
23	11223	Brooklyn	NY	10/100	57/100
24	11224	Brooklyn	NY	10/100	47/100
25	11225	Brooklyn	NY	10/100	67/100
26	11226	Brooklyn	NY	10/100	62/100
27	11228	Brooklyn	NY	10/100	57/100
28	11229	Brooklyn	NY	10/100	52/100
29	11230	Brooklyn	NY	10/100	62/100
30	11231	Brooklyn	NY	10/100	52/100
31	11232	Brooklyn	NY	10/100	57/100
32	11233	Brooklyn	NY	10/100	62/100
33	11234	Brooklyn	NY	10/100	52/100
34	11235	Brooklyn	NY	10/100	47/100
35	11236	Brooklyn	NY	10/100	52/100
36	11237	Brooklyn	NY	10/100	62/100
37	11238	Brooklyn	NY	10/100	62/100
38	11239	Brooklyn	NY	10/100	62/100
39	11249	Brooklyn	NY	10/100	62/100
40	12053	Delanson	NY	10/100	63/100
41	12430	Fleischmanns	NY	10/100	41/100
42	10504	Armonk	NY	15/100	60/100
43	10506	Bedford	NY	15/100	65/100
44	10507	Bedford Hills	NY	15/100	65/100
45	10536	Katonah	NY	15/100	65/100
46	10560	North Salem	NY	15/100	65/100
47	10921	Florida	NY	15/100	40/100
48	10924	Goshen	NY	15/100	35/100
49	10926	Harriman	NY	15/100	49/100
50	10960	Nyack	NY	15/100	58/100
51	12072	Fultonville	NY	15/100	57/100
52	12083	Greenville	NY	15/100	45/100
53	12540	Lagrangeville	NY	15/100	40/100
54	12566	Pine Bush	NY	15/100	32/100
55	12720	Bethel	NY	15/100	33/100
56	12842	Indian Lake	NY	15/100	70/100
57	12986	Tupper Lake	NY	15/100	70/100
58	13350	Herkimer	NY	15/100	40/100
59	13615	Brownville	NY	15/100	52/100
60	13619	Carthage	NY	15/100	48/100
61	13634	Dexter	NY	15/100	53/100
62	14432	Clifton Springs	NY	15/100	50/100
63	14504	Manchester	NY	15/100	50/100
64	12525	Gardiner	NY	19/100	57/100
65	10994	West Nyack	NY	20/100	59/100
66	12564	Pawling	NY	21/100	53/100
67	12779	South Fallsburg	NY	21/100	58/100
68	12493	West Park	NY	22/100	57/100
69	14030	Chaffee	NY	22/100	66/100
70	14134	Sardinia	NY	22/100	66/100
71	14710	Ashville	NY	22/100	61/100
72	14784	Stockton	NY	22/100	50/100
73	13367	Lowville	NY	23/100	60/100
74	14424	Canandaigua	NY	23/100	53/100
75	14514	North Chili	NY	23/100	71/100
76	14433	Clyde	NY	24/100	70/100
77	14512	Naples	NY	24/100	57/100
78	10562	Ossining	NY	25/100	68/100
79	10589	Somers	NY	25/100	64/100
80	10914	Blooming Grove	NY	25/100	40/100
81	10973	Slate Hill	NY	25/100	55/100
82	12010	Amsterdam	NY	25/100	30/100
83	12054	Delmar	NY	25/100	45/100
84	12056	Duanesburg	NY	25/100	69/100
85	12120	Medusa	NY	25/100	42/100
86	12147	Rensselaerville	NY	25/100	42/100
87	12413	Cairo	NY	25/100	40/100

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.