Skip to content
AquaCensus

New York public water systems

8,167 active systems regulated under the Safe Drinking Water Act, serving a reported 19.4M people across 100 counties.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

8,167

Population served

19.4M

Community systems

2,281

Groundwater share

91.3%

System types in New York

2,281

Community water system

704

Non-transient non-community water system

5,182

Transient non-community water system

Largest water systems in New York

🔒 Create a free account to export CSV
The largest active public water systems in New York by population served
#Water systemCountyPopulation servedTypeSource
1New York City SystemRichmond + 4 more8,271,000CommunitySurface water
2Suffolk County Water AuthoritySuffolk1,100,000CommunityGroundwater
3McwaOrleans + 1 more525,262CommunitySurface water
4OcwaOnondaga350,000CommunitySurface water
5Ecwa DirectErie313,380CommunitySurface water
6Buffalo Water AuthorityErie276,000CommunitySurface water
7Veolia Water New YorkRockland270,000CommunitySurface water
8Liberty Utilities New York - LynbrookNassau220,000CommunityGroundwater
9Yonkers CityWestchester211,569CommunityPurchased surface water
10Rochester CityMonroe210,000CommunitySurface water
11Syracuse CityOnondaga192,000CommunitySurface water
12Veolia Water New York, Inc.. Rd-1Westchester146,732CommunityPurchased surface water
13Liberty Utilities New York - MerrickNassau135,000CommunityGroundwater
14Mvwa - Mohawk Valley Water AuthorityOneida126,250CommunitySurface water
15Wa of Western NassauNassau120,000CommunityGroundwater
16Town of Hempstead Water DepartmentNassau110,000CommunityGroundwater
17Albany CityAlbany98,000CommunitySurface water
18Ecwa AmherstErie92,697CommunityPurchased surface water
19Greenburgh Consolidated Wd #1Westchester86,624CommunityPurchased surface water
20Latham Water DistrictAlbany85,590CommunitySurface water
21South Huntington Water DistrictSuffolk81,760CommunityGroundwater
22Mount Vernon Water DepartmentWestchester73,893CommunityPurchased surface water
23Tonawanda, Town Water Dept.Erie72,571CommunitySurface water
24Schenectady City Water WorksSchenectady61,821CommunityGroundwater
25Westchester Joint Water WorksWestchester59,629CommunitySurface water

By county

Dutchess546 systemsSullivan497 systemsOrange451 systemsUlster446 systemsPutnam382 systemsWestchester273 systemsWarren233 systemsSt. Lawrence229 systemsSaratoga216 systemsColumbia205 systemsGreene195 systemsChautauqua193 systemsOtsego190 systemsBroome170 systemsOswego163 systemsClinton161 systemsJefferson157 systemsSteuben153 systemsSuffolk151 systemsCattaraugus147 systemsRensselaer146 systemsEssex137 systemsDelaware136 systemsOneida128 systemsHerkimer123 systemsWashington118 systemsFulton113 systemsTompkins111 systemsErie108 systemsChenango99 systemsMadison95 systemsTioga94 systemsWyoming94 systemsOnondaga89 systemsCayuga88 systemsFranklin88 systemsSeneca87 systemsHamilton84 systemsAllegany80 systemsChemung77 systemsCortland76 systemsAlbany69 systemsLewis67 systemsYates67 systemsSchoharie66 systemsSchuyler63 systemsMontgomery53 systemsOntario53 systemsRockland50 systemsLivingston47 systemsWayne46 systemsNassau44 systemsSchenectady35 systemsGenesee31 systemsMonroe24 systemsOrleans23 systemsNiagara21 systemsPike9 systemsVan Buren4 systemsCarbon4 systemsAllegan3 systemsLuzerne3 systemsSusquehanna3 systemsAdams3 systems
Worcester2 systems
Lackawanna2 systems
Berks2 systems
San Joaquin1 systems
Logan1 systems
Cook1 systems
Lowndes1 systems
Kendall1 systems
Calcasieu Parish1 systems
St. Tammany Parish1 systems
Prince George's1 systems
Saginaw1 systems
Berrien1 systems
Mackinac1 systems
Lapeer1 systems
Pettis1 systems
Stone1 systems
Richmond1 systems
Morrow1 systems
Stark1 systems
Bradford1 systems
Lehigh1 systems
Schuylkill1 systems
Lycoming1 systems
Montour1 systems
Butler1 systems
Crawford1 systems
Lancaster1 systems
York1 systems
Gillespie1 systems
Harris1 systems
Hays1 systems
Jack1 systems
Montague1 systems
Webb1 systems
Snohomish1 systems