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Superfund / NPL site · EPA Superfund SEMS through latest publishNPL Final

Walsh Landfill

This site is currently on the EPA Superfund National Priorities List and remains under federal cleanup oversight. Most-cited contaminant of concern: Arsenic.

Welsh Road, Honeybrook Township, Pennsylvania · ZIP 19344 · EPA ID PAD980829527

See Chester ContaminantsEquity contextHow we read Superfund data
CLEANUP TIMELINE

Listing-date and cleanup-phase enrichment from EPA's per-site SEMS profile is queued for a follow-up ingest pass. Until then, this section will populate from EPA's published timeline data.

Anomaly engine

Notable Signals

No notable signals at this Superfund site for the current ingest. Cleanup-phase and SEMS-action flags are deferred to a follow-up engineering pass.

Contaminants of concern · per EPA SEMS

What's In This Site

Each row pairs a contaminant with the medium it was found in (the exposure pathway). Hover any named contaminant for an agency-cited health-risk summary. Cited count = number of SEMS decision records (RODs and related) that name the pair.

ContaminantPathwayCited
ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR)Groundwater3
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Groundwater2
LeadHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR)Groundwater2
MercuryHealth riskNeurotoxin. Methylmercury bioaccumulates up the food chain and damages the developing nervous system. (EPA, ATSDR)Groundwater2
NickelHealth riskNickel compounds are IARC Group 1 carcinogens; inhalation exposure raises lung and nasal cancer risk. (IARC)Groundwater2
1,1-DichloroethaneHealth riskSuspected carcinogen (EPA C/likely); CNS depressant. Common at solvent-contaminated sites as a degradation intermediate. (EPA, ATSDR)Groundwater1
1,4-DichlorobenzeneHealth riskIARC Group 2B possible carcinogen; common in mothballs and air fresheners. EPA MCL 75 µg/L. (IARC, EPA)Groundwater1
ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR)Solid Waste1
ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR)Surface Water1
BariumHealth riskSoluble barium compounds are toxic if ingested, affecting the heart, kidneys, and nervous system. Insoluble forms (e.g. barium sulfate) are far less toxic. (EPA)Groundwater1
CadmiumGroundwater1
CadmiumSediment1
CadmiumSolid Waste1
CadmiumSurface Water1
ChloroformGroundwater1
ChloroformSolid Waste1
EthylbenzeneHealth riskIARC Group 2B possible carcinogen; eye and respiratory irritant. (IARC)Groundwater1
LeadHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR)Sediment1
LeadHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR)Solid Waste1
LeadHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR)Surface Water1
ManganeseHealth riskExcess inhalation can cause manganism, a Parkinson-like neurological disorder. (ATSDR)Groundwater1
NickelHealth riskNickel compounds are IARC Group 1 carcinogens; inhalation exposure raises lung and nasal cancer risk. (IARC)Sediment1
NickelHealth riskNickel compounds are IARC Group 1 carcinogens; inhalation exposure raises lung and nasal cancer risk. (IARC)Solid Waste1
Polycyclic Aromatic Hydrocarbons (Pahs)Health riskPAH class includes IARC Group 1 carcinogens (e.g., benzo[a]pyrene); long-term exposure raises cancer risk. (IARC, EPA)Sediment1
Polycyclic Aromatic Hydrocarbons (Pahs)Health riskPAH class includes IARC Group 1 carcinogens (e.g., benzo[a]pyrene); long-term exposure raises cancer risk. (IARC, EPA)Solid Waste1
TetrachloroetheneHealth riskPCE / 'perc'. IARC Group 2A probable carcinogen; central-nervous-system effects; common dry-cleaning solvent and DNAPL plume contaminant. EPA MCL 5 µg/L. (IARC, EPA)Groundwater1
ThalliumGroundwater1
TrichloroetheneHealth riskTCE. IARC Group 1 carcinogen — kidney cancer; suspected liver cancer and non-Hodgkin lymphoma. EPA MCL 5 µg/L; common DNAPL groundwater plume contaminant. (IARC, EPA, ATSDR)Groundwater1
Xylene (Mixed Isomers)Health riskEye, skin, and respiratory irritant; central-nervous-system effects from chronic exposure. (EPA)Groundwater1
Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 43 systems below draw on groundwater (or mixed sources) and serve communities whose centroid sits within 3 miles of this site. Distance is to the served-city centroid — SDWIS does not expose individual wellhead locations, so this is a proximity screen, not a wellhead-impact assessment.

Water systemServesDistancePopulation servedSourceStatus
Tel Hai Retirement Community PrivateHoney Brook1.8 mi930GROUNDWATERIn compliance
Honey Brook Boro Water MunicipalHoney Brook1.8 mi2,892GROUNDWATERUNRESOLVED
Pine Terrace Mobile Home Park PrivateHoney Brook1.8 mi50GROUNDWATERUNRESOLVED
Greentop Mobile Home Park PrivateMorgantown2.6 mi120GROUNDWATERUNRESOLVED
Imperial Mobile Home Park PrivateMorgantown2.6 mi151GROUNDWATERUNRESOLVED
Loags Corner Mobile Home Park PrivateMorgantown2.6 mi130GROUNDWATERIn compliance
Indian Run Village Mhp PrivateMorgantown2.6 mi550GROUNDWATERUNRESOLVED
Green Hill Mhp PrivateMorgantown2.6 mi323GROUNDWATERIn compliance
Pocono Mobile Manor Mhp PrivateMorgantown2.6 mi77GROUNDWATERUNRESOLVED
Sunrise Terrace Mobile Home Pk PrivateMorgantown2.6 mi144GROUNDWATERIn compliance
Canal Mobile Home Park PrivateMorgantown2.6 mi200GROUNDWATERUNRESOLVED
The Acorns Llc PrivateMorgantown2.6 mi50GROUNDWATERIn compliance
Village Of Pleasant Hill PrivateMorgantown2.6 mi650GROUNDWATER1 HEALTH-BASED · 5YR
Caernarvon Twp Auth MunicipalMorgantown2.6 mi4,245GROUNDWATERUNRESOLVED
Village At Summit Crest PrivateMorgantown2.6 mi120GROUNDWATERIn compliance
Abraxas Academy PrivateMorgantown2.6 mi156GROUNDWATERIn compliance
Springhill Mobile Home Park PrivateMorgantown2.6 mi130GROUNDWATERUNRESOLVED
Wellington Mobile Estates PrivateMorgantown2.6 mi90GROUNDWATERIn compliance
Willow Haven North Mhp PrivateMorgantown2.6 mi240GROUNDWATERUNRESOLVED
Heritage Village Mhp PrivateMorgantown2.6 mi400GROUNDWATERUNRESOLVED
Apple Blossom Lane Mhp PrivateMorgantown2.6 mi31GROUNDWATERUNRESOLVED
Black Hawk Mobile Home Park PrivateMorgantown2.6 mi100GROUNDWATERUNRESOLVED
Stony Brook Circle Mhp PrivateMorgantown2.6 mi272GROUNDWATERIn compliance
Tiadaghton View Mhp PrivateMorgantown2.6 mi175GROUNDWATERUNRESOLVED
Bucknell View Mhp PrivateMorgantown2.6 mi100GROUNDWATERUNRESOLVED
D And H Trailer Park PrivateMorgantown2.6 mi50GROUNDWATERIn compliance
Mountain View Mhp PrivateMorgantown2.6 mi180GROUNDWATERIn compliance
Harmony Estates Mhp PrivateMorgantown2.6 mi80GROUNDWATERIn compliance
Conodoguinet Mobile Est PrivateMorgantown2.6 mi265GROUNDWATERUNRESOLVED
Country View Est PrivateMorgantown2.6 mi330GROUNDWATERUNRESOLVED
Cedar Manor Mhp PrivateMorgantown2.6 mi432GROUNDWATER2 HEALTH-BASED · 5YR
Alex Acres Mhp PrivateMorgantown2.6 mi108GROUNDWATERIn compliance
Shady Back Acres Mhp PrivateMorgantown2.6 mi40GROUNDWATER7 HEALTH-BASED · 5YR
Pine Manor Mhp PrivateMorgantown2.6 mi302GROUNDWATER19 HEALTH-BASED · 5YR
Mount Rock Manor PrivateMorgantown2.6 mi350GROUNDWATERUNRESOLVED
Lenwood Park PrivateMorgantown2.6 mi230GROUNDWATERUNRESOLVED
Sunny Crest Home PrivateMorgantown2.6 mi71GROUNDWATERUNRESOLVED
Penn Valley Village PrivateMorgantown2.6 mi225MIXEDIn compliance
Valley View Mhp Morgantown PrivateMorgantown2.6 mi60GROUNDWATERUNRESOLVED
Hershey Estates & Storage PrivateMorgantown2.6 mi293GROUNDWATERIn compliance
Orchard Hills Mhp PrivateMorgantown2.6 mi303GROUNDWATERUNRESOLVED
Mountain View Terrace PrivateMorgantown2.6 mi117GROUNDWATERUNRESOLVED
Newberry Est PrivateMorgantown2.6 mi200GROUNDWATERIn compliance

Methodology: served-city centroid (TIGER 2020) is used as the PWS coordinate. Source-water classification from SDWIS primary_source_code; only groundwater and mixed-source systems are queried. Click any system above for its full SDWIS profile.

Equity context · ACS 2018-2022 block-group demographics

Who Lives Near This Site

Within 1 mile of this site (1 Census block groups, population-weighted demographics): a population of 1,374. Why we surface this →

POPULATION SHARE
25.7%

Low-income

POPULATION SHARE
2.0%

People of color

POPULATION SHARE
9.8%

Under age 5

POPULATION SHARE
11.5%

Over age 64

Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 1-mile buffer around this site (from USEPA-clone/EJAM-open blockgroupstats). NPL site proximity contributes to the national EJ pattern; indicator-level percentile and disparity scores are surfaced on the county page and the state page.

Source. EPA Superfund Enterprise Management System (SEMS) · retrieved 2026-05-07. SEMS is a federal public-domain dataset under 17 USC §105.

What this is not. We report EPA's published Superfund record — site listing, status, and contaminants of concern as named in EPA's decision documents. We do not perform site visits, independent air or water sampling, or current-state health-risk assessment. NPL listing reflects EPA's Hazard Ranking Score at a point in time; it does not by itself describe present-day exposure.