EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Ontario, New York

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems9active CWS · pop. 2,500+
Population served65,436reported total; may overlap
Current violation flag22.2%2 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Ontario

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
Geneva CityNY340115613,334Surface waterNo current violation flagged
Canandaigua-Farmington Consolidated W.D.NY340115113,000Surface water purchasedNo current violation flagged
Canandaigua CityNY340115011,264Surface waterNo current violation flagged
Mcwa - GenevaNY34045158,532Surface water purchasedNo current violation flagged
Canandaigua Town Cons. WdNY34300086,800Surface water purchasedNo current violation flagged
Hopewell Cons Wd 1NY34119483,781Surface water purchasedNo current violation flagged
Gorham Town WdNY34011703,420Surface waterNo current violation flagged
Geneva Wd #2 CsaNY34045142,680Ground waterCurrent monitoring/reporting flag
Seneca Town WdNY34011782,625Ground water purchasedCurrent monitoring/reporting flag

02 / SOURCE MIX

Surface water purchased4 systems · 32,113 served
Surface water3 systems · 28,018 served
Ground water1 systems · 2,680 served
Ground water purchased1 systems · 2,625 served
How to read the population total

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.