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

Potter'S Septic Tank Service Pits

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

Off 74-76 Near Sandy Creek & Northwest, Sandy Creek, North Carolina · ZIP 28451 · EPA ID NCD981023260

See Brunswick 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
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Groundwater2
NaphthaleneHealth riskIARC Group 2B possible carcinogen; causes hemolytic anemia, especially in infants. (IARC)Groundwater2
1,2,4-TrimethylbenzeneHealth riskEye, skin, and respiratory irritant; high exposure causes nervous-system effects. (ATSDR)Groundwater1
1,2-DihydroacenaphthyleneSoil1
1,3,5-TrimethylbenzeneGroundwater1
2,4-DimethylphenolGroundwater1
2-MethylnaphthaleneGroundwater1
2-MethylnaphthaleneSoil1
9H-FluoreneGroundwater1
9H-FluoreneSoil1
AcenaphthyleneGroundwater1
Alpha-ChlordaneHealth riskIARC Group 2B possible carcinogen; neurotoxin; banned for most uses in 1988 but residues persist. (IARC, EPA)Soil1
AnthraceneSoil1
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
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)Soil1
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Soil1
Benzo(B)FluorantheneSoil1
Benzo(Ghi)PeryleneSoil1
Benzo[A]AnthraceneHealth riskPAH; IARC Group 2B possible carcinogen; common combustion byproduct and creosote constituent. (IARC)Soil1
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)Soil1
BerylliumSoil1
Bis(2-Ethylhexyl)PhthalateSoil1
Carcinogenic Polycyclic Aromatic Hydrocarbons (Cpah)Health riskPAH class includes IARC Group 1 carcinogens (e.g., benzo[a]pyrene); long-term exposure raises cancer risk. (IARC, EPA)Soil1
ChlorobenzeneGroundwater1
ChloromethaneGroundwater1
ChromiumHealth riskHexavalent chromium (Cr-VI) is an IARC Group 1 carcinogen via inhalation, causing lung cancer; trivalent chromium is far less toxic. (IARC, EPA)Groundwater1
ChromiumHealth riskHexavalent chromium (Cr-VI) is an IARC Group 1 carcinogen via inhalation, causing lung cancer; trivalent chromium is far less toxic. (IARC, EPA)Soil1
ChryseneSoil1
CopperHealth riskInhaled copper fumes cause metal-fume fever; chronic ingestion above EPA's 1.3 mg/L action level damages the liver. (EPA)Soil1
Delta-HexachlorocyclohexaneHealth riskLindane. IARC Group 1 carcinogen (added 2015); banned for agricultural use in the US in 2007. (IARC, EPA)Soil1

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

Drinking-water linkage · SDWIS

No Groundwater PWSes Serving Communities Within 3 Miles

No SDWIS public water systems drawing groundwater (or mixed sources) serve a community whose centroid sits within 3 miles of this site. Empty results are not a guarantee of non-impact — distance is computed to served-place centroids, and SDWIS does not expose individual wellhead locations.

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

Brunswick County, North Carolina (no Census block groups within 1 mile and no host city — falling back to containing county): a population of 139,721. Why we surface this →

POPULATION SHARE
9.1%

Low-income

POPULATION SHARE
18.6%

People of color

POPULATION SHARE
4.1%

Under age 5

POPULATION SHARE
32.7%

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.