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

Centralia Municipal Landfill

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

1313 S Tower, Centralia, Washington · ZIP 98531 · EPA ID WAD980836662

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)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)Surface Water1
ChlorideGroundwater1
IronGroundwater1
ManganeseHealth riskExcess inhalation can cause manganism, a Parkinson-like neurological disorder. (ATSDR)Groundwater1
Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 12 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
Centralia Public Works - Water MunicipalCentralia1.8 mi28,164GROUNDWATERIn compliance
Maple Lane Behavioral Health State-ownedCentralia1.8 mi450GROUNDWATERIn compliance
Middle Fork Water & Sewer MunicipalChehalis2.3 mi144GROUNDWATERIn compliance
View Ranch Estates Water Assn PrivateChehalis2.3 mi141GROUNDWATERIn compliance
Jackson Mobile 2 PrivateChehalis2.3 mi30GROUNDWATERIn compliance
Meadows PrivateChehalis2.3 mi24GROUNDWATERIn compliance
Wayside Village PrivateChehalis2.3 mi60GROUNDWATERIn compliance
Cedar Villa PrivateChehalis2.3 mi32GROUNDWATERIn compliance
Harmony Park Lot Owners PrivateChehalis2.3 mi81GROUNDWATERIn compliance
Tilton River Mobile Home Park PrivateChehalis2.3 mi40GROUNDWATERIn compliance
Parkwood Mobile Home Estates PrivateChehalis2.3 mi105GROUNDWATERIn compliance
Wildaire Estates PrivateChehalis2.3 mi146GROUNDWATER10 HEALTH-BASED · 5YR

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 1,725. Why we surface this →

POPULATION SHARE
42.2%

Low-income

POPULATION SHARE
27.5%

People of color

POPULATION SHARE
13.9%

Under age 5

POPULATION SHARE
9.0%

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.