Tompkins County, NY
The federal environmental record for Tompkins County (population 103,558): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
3
federal cleanup sites
1
PFAS-detecting water systems
3
TRI facilities
0
open tank releases
Drinking water: PFAS testing
Public water systems serving Tompkins 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 |
|---|---|---|
| ITHACA TOWN WD NY5404419 | 6:2 FTS: 11.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
3 facilities in Tompkins filed TRI reports for 2024, totalling 286k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| BORGWARNER ITHACA LLC | ITHACA | Sodium nitrite, Nickel | 286k lb |
| CAYUGA OPERATING CO L.L.C. | LANSING | Lead And Lead Compounds, Mercury And Mercury Compounds | 2 lb |
| MPL INC | ITHACA | Lead | 0 lb |
Underground fuel tanks
EPA's UST Finder records 222 tank facilities in Tompkins: 148 tanks in service and 677 closed. 167 fuel releases are on record, of which 0 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Tompkins 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 Tompkins, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CORNELL UNIVERSITY - PONDLANSING (T)
- ITHACA GUN COMPANY SITEITHACA
- NYSEG ITHACA COURT ST PLANTITHACA