Lycoming County, PA
The federal environmental record for Lycoming County (population 113,104): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
2
federal cleanup sites
2
PFAS-detecting water systems
17
TRI facilities
16
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Avco Lycoming (Williamsport Division) | Williamsport | on the NPL | 02/21/1990 |
Drinking water: PFAS testing
Public water systems serving Lycoming 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 |
|---|---|---|
| WILLIAMSPORT MUN WATER AUTH PA4410173 | PFNA: 9.7 ng/L PFOS: 5.1 ng/L PFPeA: 4.1 ng/L | above final limit |
| MONTOURSVILLE WATER COMPANY PA4410175 | PFOS: 12.1 ng/L PFOA: 6.6 ng/L PFPeA: 4.2 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
17 facilities in Lycoming filed TRI reports for 2024, totalling 292k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| YOUNG INDUSTRIES INC | MUNCY | Nickel, Chromium | 176k lb |
| ANDRITZ INC. | MUNCY | Chromium, Nickel | 53k lb |
| OHD THERMACORE INC. | WILLIAMSPORT | Manganese, Nickel | 20k lb |
| PRYSMIAN CABLES & SYSTEMS USA LLC | WILLIAMSPORT | Methanol, Lead | 18k lb |
| PLASTIC DEVELOPMENT CO | WILLIAMSPORT | Styrene | 10k lb |
| HIGH STEEL STRUCTURES - WILLIAMSPORT FACILITY | WILLIAMSPORT | Manganese, Zinc (fume or dust) | 8k lb |
| CHAMPIONX-HUGHESVILLE | HUGHESVILLE | Methanol | 3k lb |
| ARXADA LLC | WILLIAMSPORT | N-Hydroxyethylethylenediamine, Chlorine | 2k lb |
| KOPPERS INC (SUSQUEHANNA) | MONTGOMERY | Creosote, Polycyclic aromatic compounds | 2k lb |
| ST ENGINEERING HACKNEY INC | MONTGOMERY | Diisocyanates | 989 lb |
| LYCOMING ENGINES A DIV OF AVCO CORP | WILLIAMSPORT | Chromium, Nickel | 118 lb |
| CHEMCOAT INC | MONTOURSVILLE | Certain glycol ethers | 110 lb |
| WENGER FEEDS LLC-MUNCY (F/K/A WENGER FEED MILL INC) | MUNCY | Manganese And Manganese Compounds, Zinc compounds | 13 lb |
| SPARTRONICS WILLIAMSPORT INC. | WILLIAMSPORT | Lead And Lead Compounds | 1 lb |
| STELLANT SYSTEMS LLC. | WILLIAMSPORT | Lead | 0 lb |
| PMF INDUSTRIES INC | WILLIAMSPORT | - | 0 lb |
| RELADYNE NORTHEAST LLC | MUNCY | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 548 tank facilities in Lycoming: 259 tanks in service and 1,311 closed. 187 fuel releases are on record, of which 16 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Lycoming 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 Lycoming, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ALLENWOOD FED PRISON CAMPMONTGOMERY
- AVCO LYCOMING SUPERFUND SITEWILLIAMSPORT