COUNTY WATER-SYSTEM LEDGER
Ontario, New York
EPA’s September 2026 export lists 9 active community water systems serving Ontario, New York, with 2 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Ontario, New York
EPA associates 9 covered systems with Ontario, New York; their reported population-served values total 65,436 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Geneva CityNY3401156 | 13,334 | Surface water | No current violation flagged |
| Canandaigua-Farmington Consolidated W.D.NY3401151 | 13,000 | Surface water purchased | No current violation flagged |
| Canandaigua CityNY3401150 | 11,264 | Surface water | No current violation flagged |
| Mcwa - GenevaNY3404515 | 8,532 | Surface water purchased | No current violation flagged |
| Canandaigua Town Cons. WdNY3430008 | 6,800 | Surface water purchased | No current violation flagged |
| Hopewell Cons Wd 1NY3411948 | 3,781 | Surface water purchased | No current violation flagged |
| Gorham Town WdNY3401170 | 3,420 | Surface water | No current violation flagged |
| Geneva Wd #2 CsaNY3404514 | 2,680 | Ground water | Current monitoring/reporting flag |
| Seneca Town WdNY3401178 | 2,625 | Ground water purchased | Current monitoring/reporting flag |
02 / SOURCE MIX
Primary water sources for Ontario, New York
EPA classifies 9 systems serving Ontario, New York across 4 primary-source categories; Surface water purchased is the largest category with 4 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.