Westchester County, NY
The federal environmental record for Westchester County (population 990,817): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
15
federal cleanup sites
9
PFAS-detecting water systems
13
TRI facilities
82
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Katonah Municipal Well | Town of Bedford | deleted | 06/10/1986 |
| Magna Metals | Cortlandt Manor | on the NPL | 05/15/2019 |
Drinking water: PFAS testing
Public water systems serving Westchester 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 |
|---|---|---|
| YESHIVA FARM SETTLEMENT NY5903150 | PFPeA: 106 ng/L PFOS: 106 ng/L PFHxA: 69 ng/L | above final limit |
| BEDFORD CONSOLIDATED W.D. NY5903419 | PFHxS: 5.1 ng/L PFOA: 4.1 ng/L | above final limit |
| OSSINING WATER DEPARTMENT NY5903451 | PFOA: 4.3 ng/L | above final limit |
| SUEZ WATER WESTCHESTER, INC. RD2 NY5903456 | PFOA: 6.5 ng/L PFHxA: 3.8 ng/L PFPeA: 3.7 ng/L | above final limit |
| YORKTOWN CONSOLD. WATER DIST.#1 NY5903469 | PFOA: 6.9 ng/L PFPeA: 3.3 ng/L PFHxA: 3.1 ng/L | above final limit |
| SOMERS TOWN HOUSE/HALL NY5906659 | PFOS: 54.7 ng/L PFOA: 21 ng/L PFBS: 19 ng/L | above final limit |
| PEQUENAKONCK ELEMENTARY SCHOOL NY5907717 | PFHxA: 160.4 ng/L PFPeA: 134.4 ng/L PFOA: 111.5 ng/L | above final limit |
| HERITAGE HILLS WATERWORKS CORP NY5917221 | PFOA: 6.6 ng/L PFOS: 6.1 ng/L | above final limit |
| MOUNT KISCO WATER DEPARTMENT NY5903437 | PFPeA: 3.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
13 facilities in Westchester filed TRI reports for 2024, totalling 44k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| COLORS & EFFECTS USA LLC - PEEKSKILL FACILITY | PEEKSKILL | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid | 24k lb |
| U.S. ARMY NATIONAL GUARD CAMP SMITH TRAINING SITE RANGES | CORTLANDT MANOR | Lead | 8k lb |
| METALLIZED CARBON CORP | OSSINING | Polycyclic aromatic compounds, Copper | 8k lb |
| POR PRODUCTS LLC | NEW ROCHELLE | 1,2,4-Trimethylbenzene, Diisocyanates | 3k lb |
| ELECTRONIC DEVICES INC. | YONKERS | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen fluoride | 969 lb |
| GRAPHITE METALLIZING CORP | YONKERS | Copper | 25 lb |
| CERTAINTEED GYPSUM BUCHANAN LLC | BUCHANAN | Lead compounds, Mercury compounds | 7 lb |
| ELCAN INDUSTRIES INC | TUCKAHOE | Nickel, Aluminum (fume or dust) | 3 lb |
| MEDI-RAY INC | TUCKAHOE | Lead | 2 lb |
| KIMBER MFG INC | YONKERS | - | 0 lb |
| KIMBER MFG INC | YONKERS | - | 0 lb |
| RCA ASPHALT LLC | MOUNT VERNON | Polycyclic aromatic compounds | 0 lb |
| BYRAM CONCRETE & SUPPLY LLC | WHITE PLAINS | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 68 tank facilities in Westchester: 36 tanks in service and 158 closed. 1,554 fuel releases are on record, of which 82 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Westchester as Zone 3, the lowest predicted indoor radon (under 2 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 Westchester, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ANDERSON HILL ASBESTOS SITERYE BROOK
- CANADIAN RADIUM & URANIUM CORPMT. KISCO
- CROTON POINT SANITARY LANDFILLCROTON ON HUDSON
- FORMER MARBLE QUARRY LANDFILL (FMQLF)TUCKAHOE
- KATONAH MUNICIPAL WELLBEDFORD
- KEM CHEMICAL CORPMOUNT VERNON
- LITHIUM SYSTEMS DIVISIONNORTH TARRYTOWN
- MAGNA METALSCORTLANDT MANOR
- PATCLIN CHEMICAL COYONKERS
- PORT REFINERYRYE BROOK
- PPG INDUSTRIES INCMOUNT VERNON
- STAUFFER CHEMICAL /EASTERN RESEARCH CENTARDSLEY
- T.C. DUNHAM PAINT CO. WAREHOUSEYONKERS
- U.S. VA HUDSON VALLEY HEALTHCARE SYSTEM - MONTROSE CAMPUSMONTROSE
- WHITE PLAINS MERCURYWHITE PLAINS