Is Ontario, NY tap water safe?
The short answer
1 of the 3 utilities serving Ontario has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and New York’s records: MCWA.
Ontario Town Benefit Area #1, which serves the most people here, has 2 results above the health goal. The worst: Lead at 2.8 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Ontario’s ZIP codes, from EPA’s estimates.
- Open report
Ontario Town Benefit Area #1
New York · serves 10,136 people · about 1,000 in Ontario
2 results above the health goal. The worst: Lead at 2.8 ppb, above the health goal.
No health-based violations since 2016
- Open report
Palmyra - Macedon - Walworth CSA
New York · serves 24,267 people · under 100 in Ontario
1 result above the health goal. The worst: Lead at 2.8 ppb, above the health goal.
No health-based violations since 2016
- Open report
MCWA
New York · serves 525,262 people · under 100 in Ontario
1 result above the health goal. The worst: Lead at 5.0 ppb, above the health goal. Hardness: moderately hard, 93 to 120 mg/L (5.4 to 7 grains per gallon).
1 health-based violation since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Ontario Town Benefit Area #1’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Water testing near Ontario
The 3 labs New York certifies closest to Ontario, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Ontario Water Utilities
Ontario, NY · under a mile
Certified for bacteria
Lozier Environmental Consulting, Inc.
Rochester, NY · about 13 miles
Certified for bacteria
ALS Environmental - Rochester
Rochester, NY · about 19 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts
ZIP codes in Ontario
Which ZIP codes are in Ontario: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: NYS Environmental Laboratory Approval Program (ELAP), drinking water labs, as listed in TNI LAMS; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Ontario
Other towns in Wayne County with a page of their own.
What to do next
- Read Ontario Town Benefit Area #1’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water