Water quality for ZIP code 10540
Westchester County, New York, one of 74 ZIP codes in the county. 273 active public water systems serve the county; 93 had an EPA violation in the past three years.
Most likely your provider
Yonkers City
NY5903465 · Community water system · Surface water purchased · Yonkers (c)
Serves 211,569 people
Rules violated, past 3 years 0
Last sanitary survey Jul 23, 2025
Other community water systems in Westchester County
91 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Veolia Water New York, Inc. Rd-1 Ardsley (v), Bronxville (v), Dobbs Ferry (v) and 6 more |
146,732 | 1 | |
| Mount Vernon Water Department Mount Vernon (c) |
73,893 | 0 | |
| Westchester Joint Water Works |
59,629 | 1 | |
| White Plains City White Plains (c) |
59,559 | 0 | |
| Veolia Water New York, Inc. Rd-2 Port Chester (v), Rye (t), Rye Brook (v) |
57,301 | 1 | |
| Greenburgh Consolidated WD #1 Greenburgh (t) |
43,312 | 0 | |
| Yorktown Consold. Water Dist.#1 Yorktown (t) |
36,000 | 1 | |
| Ossining Water Department Ossining (t) |
30,000 | 0 | |
| Cortlandt Consolidated WD Cortlandt (t) |
28,369 | 0 | |
| Peekskill City Peekskill (c) |
24,272 | 0 | |
| Scarsdale Water Department |
21,649 | 1 | |
| Kensico Water District Mount Pleasant (t) |
17,917 | 0 | |
| New Castle/stanwood W.d. New Castle (t) |
17,116 | 0 | |
| Mount Kisco Water Department Mount Kisco (v) |
11,187 | 1 | |
| Tarrytown Water Supply Tarrytown (v) |
11,000 | 1 | |
| Sleepy Hollow (village) Mount Pleasant (t) |
9,870 | 0 | |
| Pleasantville Water District Mount Pleasant (t) |
9,550 | 1 | |
| Briarcliff Manor Village Briarcliff Manor (v) |
9,190 | 0 | |
| Bedford Consolidated W.d. Bedford (t) |
9,056 | 0 | |
| Croton on Hudson Village Croton-on-hudson (v) |
8,000 | 1 | |
| Irvington Water Supply Irvington (v) |
6,631 | 0 | |
| Larchmont Village Larchmont (v) |
6,485 | 0 | |
| Westchester County WD #3 Greenburgh (t) |
6,000 | 1 | |
| Elmsford Village Elmsford (v) |
5,293 | 0 | |
| Heritage Hills Water System Somers (t) |
4,700 | 1 |
Non-community systems in Westchester County (181: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Fox Lane High & Middle Schools Mount Kisco (v) |
3,000 | 0 | 0 | |
|
John Jay Senior High School Lewisboro (t) |
1,425 | 2 | 0 | |
|
Somers High School Somers (t) |
1,189 | 0 | 0 | |
|
Bedford Rest Area Nys RT 684 Bedford (t) |
1,000 | 2 | 0 | |
|
Saint Joseph Church (new) Somers (t) |
1,000 | 0 | 0 | |
|
Byram Hills High School North Castle (t) |
973 | 0 | 0 | |
|
John Jay Middle School Lewisboro (t) |
945 | 1 | 0 | |
|
Primrose School Somers (t) |
900 | 1 | 0 | |
|
Seven-Eleven Store Somers (t) |
900 | 0 | 0 | |
|
John F Kennedy High School Somers (t) |
840 | 0 | 0 | |
|
Swiss RE of America |
800 | 1 | 0 | |
|
Somers Middle School Somers (t) |
790 | 0 | 0 | |
|
North Salem Ms/hs North Salem (t) |
720 | 0 | 0 | |
|
Lewisboro Town Park Lewisboro (t) |
700 | 1 | 0 | |
|
Pequenakonck Elementary School North Salem (t) |
700 | 0 | 0 | |
|
Mountain Lakes Camp North Salem (t) |
675 | 0 | 0 | |
|
Somers Intermediate School Somers (t) |
673 | 0 | 0 | |
|
Breezemont Day Camp North Castle (t) |
550 | 0 | 0 | |
|
Reis Park/somers Library Somers (t) |
500 | 0 | 0 | |
|
Froggys Deli Somers (t) |
450 | 0 | 0 | |
|
Increase Miller Elementary Sch Lewisboro (t) |
450 | 0 | 0 | |
|
Rippowam Cisqua School Bedford Bedford (t) |
425 | 1 | 0 | |
|
Meadow Pond Elementary School Lewisboro (t) |
405 | 0 | 0 | |
|
North Castle Pool &tennis Club North Castle (t) |
400 | 0 | 0 | |
|
Onatru Farm Lewisboro (t) |
400 | 0 | 0 | |
|
One P Way, LLC Somers (t) |
400 | 1 | 0 | |
|
West Patent Elementary School Bedford (t) |
400 | 0 | 0 | |
|
325 West Patent Road Mount Kisco (v) |
365 | 0 | 0 | |
|
Church of Jesus Christ Lds Ossining (t) |
300 | 0 | 0 | |
|
Inn at Pound Ridge Pound Ridge (t) |
300 | 0 | 0 | |
|
Pound Ridge Elementary School Pound Ridge (t) |
300 | 0 | 0 | |
|
Pound Ridge Town Park Pound Ridge (t) |
300 | 0 | 0 | |
|
Towne Centre at Somers Somers (t) |
275 | 0 | 0 | |
|
Bedford Community Church Bedford (t) |
250 | 0 | 0 | |
|
Cranberry Lake North Castle (t) |
250 | 1 | 0 | |
|
One Twenty Three Restaurant, LLC Lewisboro (t) |
250 | 0 | 0 | |
|
Vista Indoor Tennis Lewisboro (t) |
250 | 0 | 0 | |
|
Chestnut Ridge Racquet Club Bedford (t) |
220 | 1 | 0 | |
|
Armonk Alliance Church North Castle (t) |
208 | 0 | 0 | |
|
Anglebrook Golf Club Somers (t) |
200 | 1 | 0 | |
|
Annsville Mobil Cortlandt (t) |
200 | 1 | 0 | |
|
Armonk Tennis Club North Castle (t) |
200 | 0 | 0 | |
|
Burger Barn Somers (t) |
200 | 0 | 0 | |
|
Church of St. Patrick North Castle (t) |
200 | 0 | 0 | |
|
Salem Golf Club North Salem (t) |
185 | 0 | 0 | |
|
Northern Westchester 103-105 Bedford (t) |
160 | 0 | 0 | |
|
Table 9 Peekskill (c) |
160 | 0 | 0 | |
|
Waccabuc Country Club Beach and Camp Lewisboro (t) |
160 | 0 | 0 | |
|
Camp Smith Nys Cortlandt (t) |
150 | 0 | 0 | |
|
Fox Valley Park Lewisboro (t) |
150 | 0 | 0 |
About this data
Water systems are matched to Westchester County, the county this ZIP code lies in, largest first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New York records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.