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	11202	Brooklyn	NY	10/100	62/100
4	11203	Brooklyn	NY	10/100	62/100
5	11204	Brooklyn	NY	10/100	62/100
6	11205	Brooklyn	NY	10/100	67/100
7	11206	Brooklyn	NY	10/100	62/100
8	11207	Brooklyn	NY	10/100	62/100
9	11208	Brooklyn	NY	10/100	62/100
10	11209	Brooklyn	NY	10/100	57/100
11	11210	Brooklyn	NY	10/100	62/100
12	11211	Brooklyn	NY	10/100	57/100
13	11212	Brooklyn	NY	10/100	67/100
14	11213	Brooklyn	NY	10/100	67/100
15	11214	Brooklyn	NY	10/100	57/100
16	11215	Brooklyn	NY	10/100	57/100
17	11216	Brooklyn	NY	10/100	67/100
18	11217	Brooklyn	NY	10/100	62/100
19	11218	Brooklyn	NY	10/100	62/100
20	11219	Brooklyn	NY	10/100	57/100
21	11220	Brooklyn	NY	10/100	62/100
22	11221	Brooklyn	NY	10/100	67/100
23	11222	Brooklyn	NY	10/100	57/100
24	11223	Brooklyn	NY	10/100	57/100
25	11224	Brooklyn	NY	10/100	47/100
26	11225	Brooklyn	NY	10/100	67/100
27	11226	Brooklyn	NY	10/100	62/100
28	11228	Brooklyn	NY	10/100	57/100
29	11229	Brooklyn	NY	10/100	52/100
30	11230	Brooklyn	NY	10/100	62/100
31	11231	Brooklyn	NY	10/100	52/100
32	11232	Brooklyn	NY	10/100	57/100
33	11233	Brooklyn	NY	10/100	62/100
34	11234	Brooklyn	NY	10/100	52/100
35	11235	Brooklyn	NY	10/100	47/100
36	11236	Brooklyn	NY	10/100	52/100
37	11237	Brooklyn	NY	10/100	62/100
38	11238	Brooklyn	NY	10/100	62/100
39	11239	Brooklyn	NY	10/100	62/100
40	11240	Brooklyn	NY	10/100	62/100
41	11241	Brooklyn	NY	10/100	62/100
42	11242	Brooklyn	NY	10/100	62/100
43	11243	Brooklyn	NY	10/100	62/100
44	11244	Brooklyn	NY	10/100	62/100
45	11245	Brooklyn	NY	10/100	62/100
46	11247	Brooklyn	NY	10/100	62/100
47	11248	Brooklyn	NY	10/100	62/100
48	11249	Brooklyn	NY	10/100	62/100
49	11251	Brooklyn	NY	10/100	62/100
50	11252	Brooklyn	NY	10/100	62/100
51	11254	Brooklyn	NY	10/100	62/100
52	11256	Brooklyn	NY	10/100	62/100
53	12053	Delanson	NY	10/100	63/100
54	12430	Fleischmanns	NY	10/100	41/100
55	10504	Armonk	NY	15/100	60/100
56	10506	Bedford	NY	15/100	65/100
57	10507	Bedford Hills	NY	15/100	65/100
58	10536	Katonah	NY	15/100	65/100
59	10560	North Salem	NY	15/100	65/100
60	10921	Florida	NY	15/100	40/100
61	10924	Goshen	NY	15/100	35/100
62	10926	Harriman	NY	15/100	49/100
63	10960	Nyack	NY	15/100	58/100
64	12072	Fultonville	NY	15/100	57/100
65	12083	Greenville	NY	15/100	45/100
66	12540	Lagrangeville	NY	15/100	40/100
67	12566	Pine Bush	NY	15/100	32/100
68	12720	Bethel	NY	15/100	33/100
69	12842	Indian Lake	NY	15/100	70/100
70	12986	Tupper Lake	NY	15/100	70/100
71	13350	Herkimer	NY	15/100	40/100
72	13615	Brownville	NY	15/100	52/100
73	13619	Carthage	NY	15/100	48/100
74	13634	Dexter	NY	15/100	53/100
75	14432	Clifton Springs	NY	15/100	50/100
76	14504	Manchester	NY	15/100	50/100
77	12525	Gardiner	NY	19/100	57/100
78	10994	West Nyack	NY	20/100	59/100
79	12564	Pawling	NY	21/100	53/100
80	12779	South Fallsburg	NY	21/100	58/100
81	12493	West Park	NY	22/100	57/100
82	14030	Chaffee	NY	22/100	66/100
83	14134	Sardinia	NY	22/100	66/100
84	14710	Ashville	NY	22/100	61/100
85	14784	Stockton	NY	22/100	50/100
86	13367	Lowville	NY	23/100	60/100
87	14424	Canandaigua	NY	23/100	53/100
88	14514	North Chili	NY	23/100	71/100
89	14433	Clyde	NY	24/100	70/100
90	14512	Naples	NY	24/100	57/100
91	10562	Ossining	NY	25/100	68/100
92	10589	Somers	NY	25/100	64/100
93	10914	Blooming Grove	NY	25/100	40/100
94	10973	Slate Hill	NY	25/100	55/100
95	12010	Amsterdam	NY	25/100	30/100
96	12054	Delmar	NY	25/100	45/100
97	12056	Duanesburg	NY	25/100	69/100
98	12120	Medusa	NY	25/100	42/100
99	12147	Rensselaerville	NY	25/100	42/100
100	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.