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

Commencement Bay, South Tacoma Channel

This site is currently on the EPA Superfund National Priorities List and remains under federal cleanup oversight. Most-cited contaminant of concern: 1,1,2,2-Tetrachloroethane.

South Tacoma Channel Of Commen, Tacoma, Washington · ZIP 98402 · EPA ID WAD980726301

See Pierce 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
1,1,2,2-TetrachloroethaneGroundwater3
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)Groundwater3
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)Groundwater3
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Groundwater2
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Soil2
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)Groundwater2
EthylbenzeneHealth riskIARC Group 2B possible carcinogen; eye and respiratory irritant. (IARC)Groundwater2
EthylbenzeneHealth riskIARC Group 2B possible carcinogen; eye and respiratory irritant. (IARC)Soil2
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)Groundwater2
TolueneHealth riskCentral-nervous-system depressant. Chronic high exposure causes hearing loss and developmental effects. (EPA, ATSDR)Groundwater2
TolueneHealth riskCentral-nervous-system depressant. Chronic high exposure causes hearing loss and developmental effects. (EPA, ATSDR)Soil2
Xylene (Mixed Isomers)Health riskEye, skin, and respiratory irritant; central-nervous-system effects from chronic exposure. (EPA)Groundwater2
Xylene (Mixed Isomers)Health riskEye, skin, and respiratory irritant; central-nervous-system effects from chronic exposure. (EPA)Soil2
1,1,1-TrichloroethaneHealth riskMethyl chloroform. CNS depressant; ozone-depleting substance phased out under Montreal Protocol. EPA MCL 200 µg/L. (EPA, ATSDR)Groundwater1
1,1,1-TrichloroethaneHealth riskMethyl chloroform. CNS depressant; ozone-depleting substance phased out under Montreal Protocol. EPA MCL 200 µg/L. (EPA, ATSDR)Landfill Gas1
1,1,1-TrichloroethaneHealth riskMethyl chloroform. CNS depressant; ozone-depleting substance phased out under Montreal Protocol. EPA MCL 200 µg/L. (EPA, ATSDR)Soil1
1,1,1-TrichloroethaneHealth riskMethyl chloroform. CNS depressant; ozone-depleting substance phased out under Montreal Protocol. EPA MCL 200 µg/L. (EPA, ATSDR)Surface Water1
1,1,2,2-TetrachloroethaneSoil1
1,1,2-TrichloroethaneGroundwater1
1,1-DichloroethaneHealth riskSuspected carcinogen (EPA C/likely); CNS depressant. Common at solvent-contaminated sites as a degradation intermediate. (EPA, ATSDR)Groundwater1
1,1-DichloroethaneHealth riskSuspected carcinogen (EPA C/likely); CNS depressant. Common at solvent-contaminated sites as a degradation intermediate. (EPA, ATSDR)Soil1
1,1-DichloroethaneHealth riskSuspected carcinogen (EPA C/likely); CNS depressant. Common at solvent-contaminated sites as a degradation intermediate. (EPA, ATSDR)Surface Water1
1,1-DichloroetheneHealth riskVinylidene chloride; IARC Group 3 (inadequate evidence in humans) but liver toxic in animal studies; common TCE/PCE biodegradation product. (IARC, EPA)Landfill Gas1
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)Landfill Gas1
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
1,4-DichlorobenzeneHealth riskIARC Group 2B possible carcinogen; common in mothballs and air fresheners. EPA MCL 75 µg/L. (IARC, EPA)Soil1
4-(4-Amino-3-Chlorophenyl)-2-ChloroanilineSoil1
9H-CarbazoleSoil1

Showing the top 30 pairs by SEMS citation count. 40 additional (contaminant, pathway) pairs are recorded for this site.

Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 126 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
Lookout Point PrivateTacoma1.7 mi72GROUNDWATERIn compliance
Cedarwood South Union Estates PrivateTacoma1.7 mi119GROUNDWATERIn compliance
Glenwood Station PrivateTacoma1.7 mi144GROUNDWATERIn compliance
Winddrift Well PrivateTacoma1.7 mi53GROUNDWATERIn compliance
Aspinwall Estates PrivateTacoma1.7 mi93GROUNDWATERIn compliance
Allyn Shopping Center PrivateTacoma1.7 mi414GROUNDWATERIn compliance
Alpine Hills PrivateTacoma1.7 mi363GROUNDWATERIn compliance
Lacamas Farmsteads PrivateTacoma1.7 mi615GROUNDWATERIn compliance
Little Tree PrivateTacoma1.7 mi143GROUNDWATERIn compliance
Eagle Estates PrivateTacoma1.7 mi53GROUNDWATERIn compliance
Karen Place PrivateTacoma1.7 mi53GROUNDWATERIn compliance
Cristalina PrivateTacoma1.7 mi225GROUNDWATERIn compliance
Artondale PrivateTacoma1.7 mi5,828GROUNDWATERIn compliance
Curries Landing PrivateTacoma1.7 mi61GROUNDWATERIn compliance
Creekside Meadows Division Ii PrivateTacoma1.7 mi85GROUNDWATERIn compliance
Belwood Park PrivateTacoma1.7 mi66GROUNDWATERIn compliance
Bethel Green Acres Water Assn PrivateTacoma1.7 mi522GROUNDWATERIn compliance
Nelson Ridge PrivateTacoma1.7 mi232GROUNDWATERIn compliance
Inlets End PrivateTacoma1.7 mi45GROUNDWATERIn compliance
Forest Park PrivateTacoma1.7 mi127GROUNDWATERIn compliance
Henderson Boulevard PrivateTacoma1.7 mi418GROUNDWATERIn compliance
Skookum Ranch PrivateTacoma1.7 mi60GROUNDWATERIn compliance
Brookhaven PrivateTacoma1.7 mi32GROUNDWATERIn compliance
Rosedale East PrivateTacoma1.7 mi798GROUNDWATERIn compliance
Delta Long Lk Acre Tracts PrivateTacoma1.7 mi53GROUNDWATERIn compliance
Hintzville Acres PrivateTacoma1.7 mi170GROUNDWATERIn compliance
Camelot And Western Skies PrivateTacoma1.7 mi228GROUNDWATERIn compliance
Foxhall PrivateTacoma1.7 mi549GROUNDWATERIn compliance
Cedar Crest PrivateTacoma1.7 mi2,954GROUNDWATERIn compliance
Cedar Grove PrivateTacoma1.7 mi156GROUNDWATERIn compliance
Cedarbrook PrivateTacoma1.7 mi93GROUNDWATERIn compliance
Rainwood PrivateTacoma1.7 mi48GROUNDWATERIn compliance
Four Corners PrivateTacoma1.7 mi77GROUNDWATERIn compliance
Clark & Owens Water System PrivateTacoma1.7 mi26GROUNDWATERIn compliance
Crescent Park PrivateTacoma1.7 mi53GROUNDWATERIn compliance
Cuyamaca Village PrivateTacoma1.7 mi106GROUNDWATERIn compliance
Andrews First PrivateTacoma1.7 mi299GROUNDWATERIn compliance
May Volt Hills PrivateTacoma1.7 mi106GROUNDWATERIn compliance
Ryanwood PrivateTacoma1.7 mi64GROUNDWATERIn compliance
Driftwood Valley Assoc (Dva) PrivateTacoma1.7 mi151GROUNDWATERUNRESOLVED
Sehmel Road PrivateTacoma1.7 mi42GROUNDWATERIn compliance
Lake Lawrence PrivateTacoma1.7 mi914GROUNDWATERIn compliance
Bar B Estate Manor PrivateTacoma1.7 mi96GROUNDWATERIn compliance
Sivo Acres PrivateTacoma1.7 mi66GROUNDWATERIn compliance
Evergreen Shores PrivateTacoma1.7 mi1,329GROUNDWATERIn compliance
Southcreek #1 PrivateTacoma1.7 mi69GROUNDWATERIn compliance
Black Lake Estates PrivateTacoma1.7 mi329GROUNDWATERIn compliance
Ranch Acre PrivateTacoma1.7 mi109GROUNDWATERIn compliance
Greenbriar PrivateTacoma1.7 mi37GROUNDWATERIn compliance
Brookdale Owners Association PrivateTacoma1.7 mi35GROUNDWATERIn compliance
Greenwood Estates PrivateTacoma1.7 mi61GROUNDWATERIn compliance
Pacific Ventures PrivateTacoma1.7 mi69GROUNDWATERIn compliance
Crystal Springs PrivateTacoma1.7 mi37GROUNDWATERIn compliance
Harbor Heights PrivateTacoma1.7 mi188GROUNDWATERIn compliance
Holiday Ranchettes PrivateTacoma1.7 mi1,050GROUNDWATERIn compliance
Holly Tides PrivateTacoma1.7 mi140GROUNDWATERIn compliance
Homestead Acres PrivateTacoma1.7 mi109GROUNDWATERIn compliance
Horizons West PrivateTacoma1.7 mi3,454GROUNDWATERIn compliance
Ranch PrivateTacoma1.7 mi183GROUNDWATERUNRESOLVED
Cole PrivateTacoma1.7 mi257GROUNDWATERIn compliance
Glenwood Farms 2 West PrivateTacoma1.7 mi48GROUNDWATERIn compliance
Glenwood Farms 1 East PrivateTacoma1.7 mi87GROUNDWATERIn compliance
Israel Place San Angelo Park PrivateTacoma1.7 mi146GROUNDWATERIn compliance
Johanson PrivateTacoma1.7 mi148GROUNDWATERIn compliance
Crescent Valley #333 PrivateTacoma1.7 mi91GROUNDWATERIn compliance
Kopachuck PrivateTacoma1.7 mi236GROUNDWATERIn compliance
Walden Water PrivateTacoma1.7 mi34GROUNDWATERIn compliance
Lake Tuck PrivateTacoma1.7 mi143GROUNDWATERIn compliance
Cascade Highlands PrivateTacoma1.7 mi93GROUNDWATERIn compliance
Lee PrivateTacoma1.7 mi193GROUNDWATERIn compliance
Libby Road East PrivateTacoma1.7 mi85GROUNDWATERIn compliance
Mainland View Manor PrivateTacoma1.7 mi143GROUNDWATERIn compliance
Clear Creek Estates PrivateTacoma1.7 mi101GROUNDWATERIn compliance
Little Lake Mobile Home Park PrivateTacoma1.7 mi65GROUNDWATERUNRESOLVED
Long Lake View Est 1 PrivateTacoma1.7 mi39GROUNDWATERIn compliance
Madrona Point PrivateTacoma1.7 mi111GROUNDWATERIn compliance
Muck Creek Hill PrivateTacoma1.7 mi46GROUNDWATERIn compliance
Minterbrook PrivateTacoma1.7 mi5,083GROUNDWATERIn compliance
Minter Creek Rapids PrivateTacoma1.7 mi137GROUNDWATERIn compliance
Lake Minterwood PrivateTacoma1.7 mi1,539GROUNDWATERIn compliance
Mirrormont PrivateTacoma1.7 mi2,083GROUNDWATERIn compliance
Cascade Highlands North PrivateTacoma1.7 mi119GROUNDWATERIn compliance
Jackson Lake South PrivateTacoma1.7 mi225GROUNDWATERIn compliance
Nisqually Park PrivateTacoma1.7 mi218GROUNDWATERIn compliance
Phelps Road PrivateTacoma1.7 mi58GROUNDWATERIn compliance
Olalla PrivateTacoma1.7 mi239GROUNDWATERIn compliance
Classic Heights PrivateTacoma1.7 mi480GROUNDWATERIn compliance
Olympic Mall PrivateTacoma1.7 mi2,681GROUNDWATERIn compliance
Foss Road PrivateTacoma1.7 mi119GROUNDWATERIn compliance
Palmer Lake PrivateTacoma1.7 mi1,924GROUNDWATERIn compliance
Parkshore Estates PrivateTacoma1.7 mi183GROUNDWATERUNRESOLVED
Parkland Light & Water Company PrivateTacoma1.7 mi29,595GROUNDWATERUNRESOLVED
Parkview Terrace PrivateTacoma1.7 mi3,730GROUNDWATERIn compliance
Peacock Hill PrivateTacoma1.7 mi7,401GROUNDWATERIn compliance
Bucklin PrivateTacoma1.7 mi402GROUNDWATERIn compliance
Pine Lake Mobile Home Est 1 3 PrivateTacoma1.7 mi207GROUNDWATERIn compliance
Point Evans PrivateTacoma1.7 mi5,211GROUNDWATERIn compliance
Purdy Acres East PrivateTacoma1.7 mi85GROUNDWATERIn compliance
Quistorff PrivateTacoma1.7 mi1,113GROUNDWATERIn compliance
Raft Island PrivateTacoma1.7 mi575GROUNDWATERIn compliance
Red Cedar Estates PrivateTacoma1.7 mi34GROUNDWATERIn compliance
Regency Park PrivateTacoma1.7 mi123GROUNDWATERIn compliance
River Park PrivateTacoma1.7 mi277GROUNDWATERIn compliance
Riverview PrivateTacoma1.7 mi95GROUNDWATERIn compliance
Rocky Bay PrivateTacoma1.7 mi34GROUNDWATERIn compliance
Rolling Firs Evergreen Terrace PrivateTacoma1.7 mi514GROUNDWATERIn compliance
Rondelay Meadows PrivateTacoma1.7 mi90GROUNDWATERIn compliance
Rosedale Community Club PrivateTacoma1.7 mi96GROUNDWATERIn compliance
Rosedale Heights Trailer Park PrivateTacoma1.7 mi444GROUNDWATERIn compliance
Royalwood PrivateTacoma1.7 mi111GROUNDWATERIn compliance
S & I PrivateTacoma1.7 mi482GROUNDWATERIn compliance
Schmid PrivateTacoma1.7 mi37GROUNDWATERIn compliance
Henderson Bay PrivateTacoma1.7 mi61GROUNDWATERIn compliance
Shaws Cove PrivateTacoma1.7 mi217GROUNDWATERIn compliance
Shorecrest PrivateTacoma1.7 mi289GROUNDWATERIn compliance
Silver Springs Estates PrivateTacoma1.7 mi80GROUNDWATERIn compliance
Spruce Road PrivateTacoma1.7 mi80GROUNDWATERIn compliance
Strattonwood PrivateTacoma1.7 mi220GROUNDWATERIn compliance
Strohs Water Company Inc PrivateTacoma1.7 mi3,192GROUNDWATERIn compliance
Summerhill PrivateTacoma1.7 mi42GROUNDWATERIn compliance
Summit Water & Supply Co PrivateTacoma1.7 mi16,109GROUNDWATERIn compliance
Sunshine Acres PrivateTacoma1.7 mi1,074GROUNDWATERIn compliance
Verdan Anderson Hill PrivateTacoma1.7 mi37GROUNDWATERIn compliance
Wicks Lake Ranches PrivateTacoma1.7 mi615GROUNDWATERIn compliance
Golden Meadow PrivateTacoma1.7 mi90GROUNDWATERIn compliance
Fircrest City Of MunicipalFircrest2.1 mi7,927GROUNDWATERIn 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 (6 Census block groups, population-weighted demographics): a population of 11,202. Why we surface this →

POPULATION SHARE
29.5%

Low-income

POPULATION SHARE
47.1%

People of color

POPULATION SHARE
5.2%

Under age 5

POPULATION SHARE
12.2%

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.