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Erie County, New York — public water systems

At a glance

108 active public water systems are filed under Erie County, New York in EPA's SDWIS records, together reporting 956,649 people served. The largest is Ecwa Direct, which reports serving 313,380 people. 44 are community water systems serving people where they live; the other 64 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

108

Population served

956.6K

Community systems

44

Groundwater share

76.9%

How does Erie County compare with other New York counties?

Erie County has the 29th-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 956,649 people served in total, the 5th-largest county figure in the state and 4.9% of the statewide total. The average system here reports serving 8,858 people, about 3.7 times 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 Erie County's drinking water come from?

By primary water source, Erie County's active systems draw on groundwater (82, 76%), purchased surface water (20, 19%), surface water (5, 4.6%) and groundwater under influence of surface water (1, 0.9%). Overall, 77% rely mainly on groundwater (including purchased groundwater) and 23% 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, Ecwa Direct, draws primarily on surface water.

What kinds of water systems operate in Erie County?

Erie County's active systems break down as 44 community systems (41%), 3 non-transient non-community systems (2.8%) and 61 transient non-community systems (56%). 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 (65%), local government (33%), public/private partnership (0.9%) and state government (0.9%).

The 50 largest water systems in Erie County

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Active public water systems in Erie County, New York
#Water systemCountyPopulation servedTypeSource
1Ecwa DirectErie313,380CommunitySurface water
2Buffalo Water AuthorityErie276,000CommunitySurface water
3Ecwa AmherstErie92,697CommunityPurchased surface water
4Tonawanda, Town Water Dept.Erie72,571CommunitySurface water
5Ecwa LancasterErie29,018CommunityPurchased surface water
6Ecwa Orchard ParkErie24,582CommunityPurchased surface water
7Ecwa West SenecaErie23,557CommunityPurchased surface water
8Grand Island Town Water Dept.Erie19,500CommunitySurface water
9Kenmore VillageErie15,423CommunityPurchased surface water
10Ecwa EvansErie12,338CommunityPurchased surface water
11Elma Water District No. 1Erie10,287CommunityPurchased surface water
12Ecwa Hamburg (V)Erie9,744CommunityPurchased surface water
13Ecwa BostonErie7,250CommunityPurchased surface water
14East Aurora VillageErie6,610CommunityPurchased surface water
15Ecwa NewsteadErie5,801CommunityPurchased surface water
16Springville VillageErie4,266CommunityGroundwater
17Angola VillageErie4,050CommunityPurchased surface water
18Orchard Park VillageErie3,100CommunityPurchased surface water
19Akron VillageErie3,100CommunitySurface water
20Alden VillageErie2,666CommunityGroundwater
21Kissing Bridge CentralErie2,525Transient non-communityGroundwater
22Kissing Bridge NorthErie2,500Transient non-communityGroundwater
23Holland Water DistrictErie1,680CommunityGroundwater
24Collins/Gowanda Correctional FacilityErie1,512CommunityGroundwater
25North Collins VillageErie1,496CommunityGroundwater
26Collins Wds #1 and #2Erie1,400CommunityGroundwater
27Collins Wd #3Erie760CommunityGroundwater
28Sprague Brook ParkErie500Transient non-communityGroundwater
29The Annex of Wny LLCErie500Transient non-communityGroundwater
30Brant, Town ofErie465CommunityPurchased surface water
31Colden Water District #1Erie445CommunityPurchased surface water
32Farnham VillageErie404CommunityPurchased surface water
33Craneridge Water SupplyErie360CommunityGroundwater
34Springville Country ClubErie350Transient non-communityGroundwater
35Camp Seven HillsErie346Transient non-communityGroundwater
36Brant Vol. Fire Co. No.1, Inc..Erie300Transient non-communityGroundwater
37Gowanda Country ClubErie250Transient non-communityGroundwater
38Wales Elementary SchoolErie250Non-transient non-communityGroundwater
39Colden Lakes, Inc..Erie210Transient non-communityGroundwater
40Suburban Adult Services Inc.Erie200Non-transient non-communityGroundwater
41Chaffee Water CoErie200CommunityGroundwater
42Mountain Meadows CampgroundErie160Transient non-communityGroundwater
43Evans Water DistrictErie160CommunityPurchased surface water
44Chaffee LodgeErie150Transient non-communityGroundwater
45Hunters Creek Mobile Home ParkErie150CommunityGroundwater
46Nicolos Family RestaurantErie144Transient non-communityGroundwater
47Holland Willows RestaurantErie140Transient non-communityGroundwater
48Three Valley Natural CampgrounErie132Transient non-communityGroundwater
49Springwood Mobile VillageErie120CommunityGroundwater
50Creekside M.H.P.Erie120CommunityGroundwater

All other water systems in Erie County (58)

The remaining active systems filed under Erie County, largest first, with the population each reports serving.

Erie County water systems: frequently asked questions

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

EPA's SDWIS records file 108 active public water systems under Erie County, New York: 44 community systems (41%), 3 non-transient non-community systems (2.8%) and 61 transient non-community systems (56%).

Who supplies drinking water in Erie County, NY?

The largest community water systems filed under Erie County are Ecwa Direct (313,380 people served), Buffalo Water Authority (276,000 people served) and Ecwa Amherst (92,697 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 Erie County's drinking water come from groundwater or surface water?

Of the 108 active public water systems in Erie County, 77% draw mainly on groundwater and 23% on surface water, counting purchased supplies. The largest system, Ecwa Direct, uses surface water.

Where can I find a water quality report for Erie 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. 44 community systems are filed under Erie 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 Erie 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 Erie County, New York”, https://aquacensus.com/water-systems/new-york/erie (data as of October 1, 2026).