Montgomery County, New York — public water systems
At a glance
53 active public water systems are filed under Montgomery County, New York in EPA's SDWIS records, together reporting 38,877 people served. The largest is Amsterdam (C), which reports serving 20,700 people. 18 are community water systems serving people where they live; the other 35 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
53
Population served
38.9K
Community systems
18
Groundwater share
84.9%
How does Montgomery County compare with other New York counties?
Montgomery County has the 47th-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 38,877 people served in total, the 46th-largest county figure in the state and 0.2% of the statewide total. The average system here reports serving 734 people, well below 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 Montgomery County's drinking water come from?
By primary water source, Montgomery County's active systems draw on groundwater (40, 75%), surface water (5, 9.4%), purchased surface water (3, 5.7%) and purchased groundwater (3, 5.7%). Overall, 85% rely mainly on groundwater (including purchased groundwater) and 15% 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, Amsterdam (C), draws primarily on surface water.
What kinds of water systems operate in Montgomery County?
Montgomery County's active systems break down as 18 community systems (34%), 9 non-transient non-community systems (17%) and 26 transient non-community systems (49%). 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 (68%), local government (30%) and state government (1.9%).
The 50 largest water systems in Montgomery County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Amsterdam (C) | Montgomery | 20,700 | Community | Surface water |
| 2 | Amsterdam (T) | Montgomery | 3,000 | Community | Purchased surface water |
| 3 | Canajoharie (V) Water Works | Montgomery | 2,300 | Community | Surface water |
| 4 | Fort Plain (V) Water Works | Montgomery | 2,250 | Community | Surface water |
| 5 | Nys Thruway-Pattersonville Service Area | Montgomery | 2,221 | Non-transient non-community | Purchased groundwater |
| 6 | St. Johnsville Village Water Works | Montgomery | 1,700 | Community | Surface water |
| 7 | Fonda (V) Water Works | Montgomery | 1,080 | Community | Surface water |
| 8 | Palatine Bridge (V) Water Works | Montgomery | 900 | Community | Groundwater |
| 9 | Fultonville Village Pws | Montgomery | 740 | Community | Groundwater |
| 10 | Nelliston (V) Water Works | Montgomery | 535 | Community | Purchased surface water |
| 11 | Florida (T) Water District | Montgomery | 432 | Community | Purchased surface water |
| 12 | Capstone Center for Rehab and Nursing | Montgomery | 330 | Community | Groundwater |
| 13 | Fulmont Early Childhood Services@Truax | Montgomery | 200 | Non-transient non-community | Groundwater |
| 14 | Antlers Country Club | Montgomery | 160 | Transient non-community | Groundwater |
| 15 | Valentinos Restaurant | Montgomery | 150 | Transient non-community | Groundwater |
| 16 | Country Estates | Montgomery | 150 | Community | Groundwater |
| 17 | Canajoharie Golf and Country Club | Montgomery | 137 | Transient non-community | Groundwater |
| 18 | Pine Meadow Mhc | Montgomery | 100 | Community | Groundwater |
| 19 | Loopies Irish Pub | Montgomery | 100 | Transient non-community | Groundwater |
| 20 | Karens Produce | Montgomery | 100 | Transient non-community | Groundwater |
| 21 | Ripepis Restaurant | Montgomery | 100 | Transient non-community | Groundwater |
| 22 | Cps Family Restaurant | Montgomery | 99 | Transient non-community | Groundwater |
| 23 | Pattersonville Mobile Home #1 | Montgomery | 81 | Community | Groundwater under influence of surface water |
| 24 | Shady Lane Park, Inc.. | Montgomery | 80 | Community | Groundwater |
| 25 | Cronies Restaurant | Montgomery | 75 | Transient non-community | Groundwater |
| 26 | Faith Bible Church | Montgomery | 75 | Non-transient non-community | Groundwater |
| 27 | El Rancho Drive in | Montgomery | 75 | Transient non-community | Groundwater |
| 28 | Parkside Drive in | Montgomery | 75 | Transient non-community | Groundwater |
| 29 | Anderson Instrument Company | Montgomery | 70 | Non-transient non-community | Groundwater |
| 30 | Mountain Man Hunting Club | Montgomery | 65 | Transient non-community | Groundwater |
| 31 | Driscoll Foods | Montgomery | 60 | Non-transient non-community | Groundwater |
| 32 | Pattersonville Mobile Home #2 | Montgomery | 50 | Community | Groundwater |
| 33 | Lombardos Pizzeria Plus | Montgomery | 50 | Transient non-community | Groundwater |
| 34 | Country Club Estates-Antlers | Montgomery | 50 | Community | Groundwater |
| 35 | Glen Water District 1 | Montgomery | 50 | Non-transient non-community | Purchased groundwater |
| 36 | Ag Properties LLC | Montgomery | 50 | Non-transient non-community | Groundwater |
| 37 | Isaan Thai Restaurant | Montgomery | 45 | Transient non-community | Groundwater |
| 38 | Checkers Out Speedway | Montgomery | 42 | Transient non-community | Groundwater |
| 39 | Old Trail Estates | Montgomery | 40 | Community | Groundwater |
| 40 | Glen Water District 2 | Montgomery | 35 | Non-transient non-community | Purchased groundwater |
| 41 | Stewarts #319 | Montgomery | 25 | Transient non-community | Groundwater |
| 42 | 67 Super - Stop / Adirondack Towing | Montgomery | 25 | Transient non-community | Groundwater |
| 43 | Me- Mas Country Store | Montgomery | 25 | Transient non-community | Groundwater |
| 44 | Teds Ice Cream Place | Montgomery | 25 | Transient non-community | Groundwater |
| 45 | Stewarts #102 | Montgomery | 25 | Transient non-community | Groundwater |
| 46 | Stewarts #655 / Mobile 300 | Montgomery | 25 | Transient non-community | Groundwater |
| 47 | St. Johnsville Civic Club | Montgomery | 25 | Transient non-community | Groundwater |
| 48 | Amvets Post #2000 | Montgomery | 25 | Transient non-community | Groundwater |
| 49 | Tribes Hill Deli | Montgomery | 25 | Transient non-community | Groundwater |
| 50 | Kutiks Pollination Services | Montgomery | 25 | Transient non-community | Groundwater |
All other water systems in Montgomery County (3)
The remaining active systems filed under Montgomery County, largest first, with the population each reports serving.
Montgomery County water systems: frequently asked questions
How many public water systems are in Montgomery County, New York?
EPA's SDWIS records file 53 active public water systems under Montgomery County, New York: 18 community systems (34%), 9 non-transient non-community systems (17%) and 26 transient non-community systems (49%).
Who supplies drinking water in Montgomery County, NY?
The largest community water systems filed under Montgomery County are Amsterdam (C) (20,700 people served), Amsterdam (T) (3,000 people served) and Canajoharie (V) Water Works (2,300 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 Montgomery County's drinking water come from groundwater or surface water?
Of the 53 active public water systems in Montgomery County, 85% draw mainly on groundwater and 15% on surface water, counting purchased supplies. The largest system, Amsterdam (C), uses surface water.
Where can I find a water quality report for Montgomery 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. 18 community systems are filed under Montgomery 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 Montgomery 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
- All New York public water systems· 8,167 active
- Lewis County· 67 systems
- Yates County· 67 systems
- Schoharie County· 66 systems
- Schuyler County· 63 systems
- Ontario County· 53 systems
- Rockland County· 50 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
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 Montgomery County, New York”, https://aquacensus.com/water-systems/new-york/montgomery (data as of October 1, 2026).