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Schenectady County, New York — public water systems

At a glance

35 active public water systems are filed under Schenectady County, New York in EPA's SDWIS records, together reporting 146,284 people served. The largest is Schenectady City Water Works, which reports serving 61,821 people. 11 are community water systems serving people where they live; the other 24 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

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

Active systems

35

Population served

146.3K

Community systems

11

Groundwater share

94.3%

How does Schenectady County compare with other New York counties?

Schenectady County has the 53rd-most active public water systems among the 100 counties listed for active New York systems in EPA records; among the 64 with 3 or more systems, the median has 94. Its systems report 146,284 people served in total, the 17th-largest county figure in the state and 0.8% of the statewide total. The average system here reports serving 4,180 people, about 76% above the New York average of 2,374. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does Schenectady County's drinking water come from?

By primary water source, Schenectady County's active systems draw on groundwater (33, 94%) and surface water (2, 5.7%). Overall, 94% rely mainly on groundwater (including purchased groundwater) and 5.7% on surface water, compared with 91% and 8.5% across New York. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Schenectady City Water Works, draws primarily on groundwater.

What kinds of water systems operate in Schenectady County?

Schenectady County's active systems break down as 11 community systems (31%), 4 non-transient non-community systems (11%) and 20 transient non-community systems (57%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (71%), local government (26%) and public/private partnership (2.9%).

Water systems in Schenectady County

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Active public water systems in Schenectady County, New York
#Water systemCountyPopulation servedTypeSource
1Schenectady City Water WorksSchenectady61,821CommunityGroundwater
2Rotterdam Wd #5Schenectady28,000CommunityGroundwater
3Niskayuna Consolidated Wd #11Schenectady22,287CommunityGroundwater
4Glenville Wd #11Schenectady15,000CommunityGroundwater
5Scotia Village Water WorksSchenectady12,800CommunityGroundwater
6Rotterdam Wd #3Schenectady1,900CommunityGroundwater
7Princetown Water SupplySchenectady900CommunityGroundwater
8Duanesburg Elem SchoolSchenectady500Non-transient non-communityGroundwater
9Delanson Village Water WorksSchenectady380CommunitySurface water
10Maple Ski Ridge Inc..Schenectady325Transient non-communityGroundwater
11J & D PubSchenectady300Transient non-communityGroundwater
12Tarassas Italian American CuisineSchenectady250Transient non-communityGroundwater
13Frosty Acres CampsiteSchenectady230Transient non-communityGroundwater
14Murrays FoolsSchenectady200Transient non-communityGroundwater
15West Hill Water Company Inc..Schenectady180CommunityGroundwater
16Gibbys DinerSchenectady150Transient non-communityGroundwater
17Hannaford Super MarketSchenectady130Non-transient non-communityGroundwater
18Bears SteakhouseSchenectady100Transient non-communityGroundwater
19Stewarts #116 (New)Schenectady100Transient non-communityGroundwater
20Dollar GeneralSchenectady100Transient non-communityGroundwater
21Duanesburg Diner & RestaurantSchenectady100Transient non-communityGroundwater
22Syrons MarketSchenectady100Transient non-communityGroundwater
23Hillcrest Commons- Frt SectionSchenectady64CommunityGroundwater
24Delanson Delicatessan and Smoke ShopSchenectady50Transient non-communityGroundwater
25Duanesburg Area Community DaycareSchenectady50Non-transient non-communityGroundwater
26Hillcrest Commons-Rear SectionSchenectady42CommunityGroundwater
27Whispering Pines DaycareSchenectady25Non-transient non-communityGroundwater
28Stewarts Brdnbttr S 250-DuanesburgSchenectady25Transient non-communityGroundwater
29Mariaville Lakeside Country StoreSchenectady25Transient non-communitySurface water
30Dollar General - DuanesburgSchenectady25Transient non-communityGroundwater
31Wolf Hollow BrewingSchenectady25Transient non-communityGroundwater
32Mikey Mart Ii - Rt 7 & I-88Schenectady25Transient non-communityGroundwater
33Stewarts Shop 324-GlenvilleSchenectady25Transient non-communityGroundwater
34Indian Lookout Country ClubSchenectady25Transient non-communityGroundwater
35Rosa VillaSchenectady25Transient non-communityGroundwater

Schenectady County water systems: frequently asked questions

How many public water systems are in Schenectady County, New York?

EPA's SDWIS records file 35 active public water systems under Schenectady County, New York: 11 community systems (31%), 4 non-transient non-community systems (11%) and 20 transient non-community systems (57%).

Who supplies drinking water in Schenectady County, NY?

The largest community water systems filed under Schenectady County are Schenectady City Water Works (61,821 people served), Rotterdam Wd #5 (28,000 people served) and Niskayuna Consolidated Wd #11 (22,287 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does Schenectady County's drinking water come from groundwater or surface water?

Of the 35 active public water systems in Schenectady County, 94% draw mainly on groundwater and 5.7% on surface water, counting purchased supplies. The largest system, Schenectady City Water Works, uses groundwater.

Where can I find a water quality report for Schenectady County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 11 community systems are filed under Schenectady County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in Schenectady County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More New York water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in Schenectady County, New York”, https://aquacensus.com/water-systems/new-york/schenectady (data as of October 1, 2026).