Ontario County, NY
The federal environmental record for Ontario County (population 112,494): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
7
federal cleanup sites
1
PFAS-detecting water systems
8
TRI facilities
11
open tank releases
Drinking water: PFAS testing
Public water systems serving Ontario with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| BRISTOL HARBOUR WATER CORP NY3400784 | PFBS: 15 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
8 facilities in Ontario filed TRI reports for 2024, totalling 8k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ELDERLEE INC | OAKS CORNERS | Zinc compounds, Lead And Lead Compounds | 3k lb |
| HENKEL US OPERATIONS CORP | GENEVA | Certain glycol ethers, 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran | 2k lb |
| GUARDIAN INDUSTRIES - GENEVA | GENEVA | Ammonia, Lead compounds | 1k lb |
| NORTHRUP FARMINGTON | FARMINGTON | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead | 1k lb |
| GW LISK CO INC | CLIFTON SPRINGS | 1-Bromopropane, Lead compounds | 451 lb |
| REDCOM LABORATORIES INC. | VICTOR | - | 0 lb |
| MANCHESTER FACILITY | CLIFTON SPRINGS | Polycyclic aromatic compounds | 0 lb |
| PACTIV LLC | CANANDAIGUA | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 386 tank facilities in Ontario: 218 tanks in service and 1,103 closed. 254 fuel releases are on record, of which 11 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Ontario as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Ontario, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CANANDAIGUA VA MEDICAL CENTERCANANDAIGUA
- CITY MINI STORAGECANANDAIGUA
- GENESEE SANO & GRAVELFISHERS
- HICKS SITEGENEVA
- LABELON CORPORATIONCANANDAIGUA
- MODOCK ROAD SPRINGSVICTOR
- TAFT ROAD ABANDONED DRUMS SUPERFUND SITEBLOOMFIELD