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ZIP Code 10994 Water Quality
New York · 486,322 people served · 24 water systems
C
FairZIP code 10994 is in New York and is a large city from a drinking-water-service perspective, with 486,322 people served by 24 EPA-registered public water systems. It corresponds to WEST NYACK.
Within ZIP code 10994, the EPA Safe Drinking Water Information System (SDWIS) records 4 health-based violations during the past five years across 24 water systems serving this postal area. The grade of C reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 10994
Water Systems Serving 10994
VEOLIA WATER NEW YORK
PWSID: NY4303673
270,000 served
MAHOPAC WATER CO
PWSID: NY3905707
1,202 served
HILLSDALE ESTATE
PWSID: NY3905712
270 served
SPRING KNOLLS
PWSID: NY3916004
53 served
UNION VALLEY ESTATES
PWSID: NY3905696
273 served
ARCHER ESTATES
PWSID: NY3905695
120 served
COUNTRY HILL ESTATES
PWSID: NY3905694
203 served
CHATEAU RIDGE
PWSID: NY3905685
440 served
CAPRI ESTATES
PWSID: NY3905684
172 served
WOODHILL ESTATES
PWSID: NY3905688
128 served
FOREST PARK HOMES
PWSID: NY3905686
200 served
MISTY HILLS WATER SYSTEM
PWSID: NY3920886
315 served
HILLTOP MEADOWS WATER SUPPLY
PWSID: NY3920281
196 served
LONDON BRIDGE WATER WORKS
PWSID: NY3903647
224 served
BONIVILLE WATER CO
PWSID: NY3903640
376 served
FOREST PARK WATER CO PLANT #3
PWSID: NY5903487
67 served
KNOLLS WATER CO., INC.
PWSID: NY3503563
230 served
HERITAGE HILLS WATER SYSTEM
PWSID: NY5917221
4,700 served
BLUE LAKE
PWSID: NY3512132
1,850 served
STERLING LAKE
PWSID: NY3512133
225 served
INDIAN KILL
PWSID: NY3503592
1,000 served
N.Y.U. HOUSING
PWSID: NY3503034
45 served
VEOLIA WATER NEW YORK, INC. RD-1
PWSID: NY5903444
146,732 served
VEOLIA WATER NEW YORK, INC. RD-2
PWSID: NY5903456
57,301 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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