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

Sikes Disposal Pits

This site is currently on the EPA Superfund National Priorities List and remains under federal cleanup oversight. Most-cited contaminant of concern: (E)-1,3-Dichloro-1-Propene.

Us Hwy 90, Crosby, Texas · ZIP 77532 · EPA ID TXD980513956

See Harris 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
(E)-1,3-Dichloro-1-PropeneGroundwater1
1,1,2,2-TetrachloroethaneGroundwater1
1,1,2-TrichloroethaneGroundwater1
1,1,2-TrichloroethaneSurface Water1
1,2-DichlorobenzeneHealth riskLiver and kidney effects from chronic exposure. EPA MCL 600 µg/L. (EPA, ATSDR)Groundwater1
1,2-DichloroethaneHealth riskIARC Group 2B possible carcinogen; liver and kidney toxic. EPA MCL 5 µg/L. (IARC, EPA)Groundwater1
1,2-DichloroethaneHealth riskIARC Group 2B possible carcinogen; liver and kidney toxic. EPA MCL 5 µg/L. (IARC, EPA)Sludge1
1,2-DichloroethaneHealth riskIARC Group 2B possible carcinogen; liver and kidney toxic. EPA MCL 5 µg/L. (IARC, EPA)Soil1
1,2-DichloroethaneHealth riskIARC Group 2B possible carcinogen; liver and kidney toxic. EPA MCL 5 µg/L. (IARC, EPA)Surface Water1
1,2-DihydroacenaphthyleneGroundwater1
1,2-DihydroacenaphthyleneSurface Water1
1,4-DichlorobenzeneHealth riskIARC Group 2B possible carcinogen; common in mothballs and air fresheners. EPA MCL 75 µg/L. (IARC, EPA)Groundwater1
9H-FluoreneSludge1
9H-FluoreneSoil1
AcenaphthyleneSurface Water1
AnthraceneSurface Water1
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Groundwater1
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Sludge1
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Soil1
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Surface Water1
Benzo(B)FluorantheneSurface Water1
Benzo[A]AnthraceneHealth riskPAH; IARC Group 2B possible carcinogen; common combustion byproduct and creosote constituent. (IARC)Surface Water1
Benzo[A]PyreneHealth riskPAH; IARC Group 1 carcinogen; the prototypical PAH used to benchmark PAH-mixture cancer risk. EPA MCL 0.2 µg/L. (IARC, EPA)Surface Water1
BerylliumGroundwater1
Bis(2-Ethylhexyl)PhthalateGroundwater1
Bis(2-Ethylhexyl)PhthalateSurface Water1
CadmiumGroundwater1
ChlorobenzeneGroundwater1
ChlorobenzeneSurface Water1
Chloroethene (Vinyl Chloride)Health riskIARC Group 1 carcinogen — angiosarcoma of the liver. Final TCE/PCE biodegradation product; commonly found in groundwater plumes. EPA MCL 2 µg/L. (IARC, EPA)Groundwater1

Showing the top 30 pairs by SEMS citation count. 35 additional (contaminant, pathway) pairs are recorded for this site.

Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 11 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
Apacheland Mobile Home Subdivision PrivateCrosby2.9 mi207GROUNDWATERIn compliance
Sheldon Road Mud MunicipalCrosby2.9 mi1,689GROUNDWATERUNRESOLVED
Harris County Wcid 70 MunicipalCrosby2.9 mi2,112GROUNDWATERIn compliance
Lori Heights Mobile Home Subdivision PrivateCrosby2.9 mi111GROUNDWATERIn compliance
Canal Terrace Subdivision PrivateCrosby2.9 mi480GROUNDWATERIn compliance
Harris County Mud 50 MunicipalCrosby2.9 mi4,743GROUNDWATERIn compliance
Chapmans Mhp PrivateCrosby2.9 mi195GROUNDWATER1 HEALTH-BASED · 5YR
Carol Norra Mobile Home Park PrivateCrosby2.9 mi63GROUNDWATERUNRESOLVED
Northwest Harris County Mud 24 MunicipalCrosby2.9 mi1,257GROUNDWATERUNRESOLVED
Four Seasons Mhp PrivateCrosby2.9 mi54GROUNDWATERIn compliance
Huffman Hollow Apartments PrivateCrosby2.9 mi234GROUNDWATERIn 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

Harris County, Texas (no Census block groups within 1 mile and no host city — falling back to containing county): a population of 4,726,177. Why we surface this →

POPULATION SHARE
15.8%

Low-income

POPULATION SHARE
72.4%

People of color

POPULATION SHARE
7.2%

Under age 5

POPULATION SHARE
11.0%

Over age 64

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror). 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.