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

Newmark Ground Water Contamination

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

Bunker Hill Ground Water Basin, San Bernardino, California · ZIP 92408 · EPA ID CAD981434517

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
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)Groundwater5
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)Groundwater4
1,1-DichloroethaneHealth riskSuspected carcinogen (EPA C/likely); CNS depressant. Common at solvent-contaminated sites as a degradation intermediate. (EPA, ATSDR)Groundwater1
Cis-1,2-DichloroetheneHealth riskTCE biodegradation intermediate. EPA MCL 70 µg/L; lower toxicity than parent solvents but commonly co-occurs in groundwater plumes. (EPA)Groundwater1
DichlorodifluoromethaneGroundwater1
Trans-1,2-DichloroetheneHealth riskTCE biodegradation intermediate. EPA MCL 100 µg/L; lower toxicity than parent solvents but commonly co-occurs in groundwater plumes. (EPA)Groundwater1
TrichlorofluoromethaneGroundwater1
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
Glen Helen Water System MunicipalSan Bernardino2.4 mi5,900GROUNDWATERIn compliance
Csa 70 W-3 Hacienda PrivateSan Bernardino2.4 mi611GROUNDWATERUNRESOLVED
Csa 70 W-4 Pioneertown MunicipalSan Bernardino2.4 mi470GROUNDWATERUNRESOLVED
Gilbert Street Complex MunicipalSan Bernardino2.4 mi3,833GROUNDWATERUNRESOLVED
Csa 42 Oro Grande MunicipalSan Bernardino2.4 mi529GROUNDWATERIn compliance
Csa 70-F Morongo MunicipalSan Bernardino2.4 mi300GROUNDWATERUNRESOLVED
San Bernardino Valley Wd MunicipalSan Bernardino2.4 mi109,608GROUNDWATERIn compliance
Muscoy Mwc No. 1 PrivateSan Bernardino2.4 mi13,000GROUNDWATERUNRESOLVED
San Bernardino City MunicipalSan Bernardino2.4 mi214,665GROUNDWATERIn compliance
Sbdno County Service Area 64 MunicipalSan Bernardino2.4 mi14,911GROUNDWATERIn compliance
Sbdno County Service Area 70J MunicipalSan Bernardino2.4 mi12,843GROUNDWATERIn 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 (9 Census block groups, population-weighted demographics): a population of 16,144. Why we surface this →

POPULATION SHARE
40.5%

Low-income

POPULATION SHARE
85.5%

People of color

POPULATION SHARE
8.1%

Under age 5

POPULATION SHARE
8.0%

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.