Is Ontario, NY Tap Water Safe to Drink?
Ontario, NY tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Contaminants including lithium have been detected at or below guideline thresholds.
Where Does Ontario Get Its Water?
Water in Ontario, NY is provided by 3 public water systems: ONTARIO TOWN BENEFIT AREA #1, MCWA and PALMYRA-MACEDON-WALWORTH CSA.
How Is Ontario Tap Water Treated?
Treated water is disinfected using chloramines and free chlorine. Treatment includes conventional treatment (coagulation, flocculation, and filtration), granular activated carbon filtration, in-line filtration, post-ozone biofiltration and slow sand filtration.
What's in Ontario Tap Water?
The following contaminants were detected most frequently in Ontario public water systems. All detected levels fall at or below EPA health guidelines in this dataset.
| Contaminant | Peak detected | EPA guideline | ZIPs detected | Status |
|---|---|---|---|---|
| lithium | 9 µg/L | — | 0 ZIPs | Within guideline |
| PFTrDA | 0.007 µg/L | 0.007 µg/L | 1 ZIP | Within guideline |
| 6:2 FTS | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| PFBA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
| HFPO-DA | 0.005 µg/L | — | 0 ZIPs | Within guideline |
Health Risk Profile for Ontario
Current EPA monitoring data for Ontario shows contaminant levels within guideline thresholds across all ZIP codes in this dataset. As with all public water systems, sensitive populations may choose to use a certified filter for additional peace of mind.
Best Broad-Spectrum Filters for This Water Profile
This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.
8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.
See recommendations matched to your exact address: choose your ZIP code below.
Frequently Asked Questions about Ontario Tap Water
Is Ontario tap water safe to drink?
Ontario tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Sensitive populations may still choose to use a certified filter as a precaution.
What contaminants are in Ontario tap water?
The most commonly detected contaminants in Ontario water systems include: lithium, PFTrDA, 6:2 FTS. See the ZIP-level reports for exact measurements and EPA guideline comparisons.
Where does Ontario get its drinking water?
Ontario receives water from 3 public water systems, including ONTARIO TOWN BENEFIT AREA #1.
Do I need a water filter in Ontario?
Current data does not show guideline exceedances in Ontario. A certified filter can still reduce trace contaminants and improve taste for households that prefer filtered water.
How often is Ontario tap water tested?
Public water systems in Ontario are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2024-08-13.
Tap water reports by ZIP in Ontario
- 14519 - Ontario tap water report Some concern
Water utilities serving Ontario, NY
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- MCWALooks OK
- ONTARIO TOWN BENEFIT AREA #1Looks OK
- PALMYRA-MACEDON-WALWORTH CSALooks OK
Also covers / overlaps with
- Walworth, NY · Township