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

United Creosoting Co.

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

2Nd & Hilbig, Conroe, Texas · ZIP 77301 · EPA ID TXD980745574

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
PentachlorophenolHealth riskIARC Group 1 carcinogen; wood preservative; persistent in soil and groundwater. (IARC, EPA)Soil3
Polycyclic Aromatic Hydrocarbons (Pahs)Health riskPAH class includes IARC Group 1 carcinogens (e.g., benzo[a]pyrene); long-term exposure raises cancer risk. (IARC, EPA)Soil2
2,3,7,8-Tetrachlorodibenzo-P-Dioxin (Tcdd)Soil1
2,3,7,8-Tetrachlorodibenzo-P-Dioxin (Tcdd) Toxicity Equivalents (Teq)Soil1
Benzo[A]Pyrene Equivalents (Bapeq)Health riskPAH; IARC Group 1 carcinogen; the prototypical PAH used to benchmark PAH-mixture cancer risk. EPA MCL 0.2 µg/L. (IARC, EPA)Soil1
Dioxins (Chlorinated Dibenzodioxins)Soil1
PentachlorophenolHealth riskIARC Group 1 carcinogen; wood preservative; persistent in soil and groundwater. (IARC, EPA)Groundwater1
Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 56 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
Enchanted Forest PrivateConroe1.9 mi358GROUNDWATERIn compliance
Whispering Pines Subdivision PrivateConroe1.9 mi63GROUNDWATERIn compliance
Northwoods Subdivision PrivateConroe1.9 mi113GROUNDWATERUNRESOLVED
Countrywood Water System PrivateConroe1.9 mi431GROUNDWATERIn compliance
New Forest Estates Water System PrivateConroe1.9 mi57GROUNDWATERIn compliance
Dairyland Heights Water System PrivateConroe1.9 mi123GROUNDWATERIn compliance
Breakaway Trails Subdivision PrivateConroe1.9 mi121GROUNDWATERIn compliance
Hydies Crossing PrivateConroe1.9 mi60GROUNDWATERIn compliance
Woodway Subdivision Water System PrivateConroe1.9 mi2,082GROUNDWATERIn compliance
Lakeview Water PrivateConroe1.9 mi411GROUNDWATERIn compliance
Meadow Glen Crystal Springs Water PrivateConroe1.9 mi966GROUNDWATERIn compliance
Fairfield Estates PrivateConroe1.9 mi954GROUNDWATERIn compliance
Woodlands Hills Water PrivateConroe1.9 mi1,797GROUNDWATERIn compliance
Southampton Subdivision PrivateConroe1.9 mi474GROUNDWATERIn compliance
Remington Place PrivateConroe1.9 mi135GROUNDWATERIn compliance
Splendora Woods PrivateConroe1.9 mi537GROUNDWATERIn compliance
The Ranch Subdivision PrivateConroe1.9 mi186GROUNDWATERUNRESOLVED
Oaks Of Trinity Subdivision PrivateConroe1.9 mi636GROUNDWATERIn compliance
Spring Oaks Subdivision PrivateConroe1.9 mi282GROUNDWATERIn compliance
Cedar Creek Water System PrivateConroe1.9 mi1,458GROUNDWATERUNRESOLVED
Indian Springs Water System PrivateConroe1.9 mi240GROUNDWATERIn compliance
Encino Estates PrivateConroe1.9 mi1,650GROUNDWATERUNRESOLVED
Chateau Woods Mud Water System MunicipalConroe1.9 mi2,700GROUNDWATERIn compliance
Lake Forest Falls Subdivision PrivateConroe1.9 mi567GROUNDWATERIn compliance
Lakeland Water System PrivateConroe1.9 mi303GROUNDWATERIn compliance
Domestic Water Company Royal Forest Subd PrivateConroe1.9 mi1,667GROUNDWATERUNRESOLVED
Town Of Woodloch MunicipalConroe1.9 mi747GROUNDWATERUNRESOLVED
Meachen Meadows Subdivision Water System PrivateConroe1.9 mi132GROUNDWATER1 HEALTH-BASED · 5YR
East Plantation Utility District MunicipalConroe1.9 mi1,896GROUNDWATERUNRESOLVED
Caney Creek Utility PrivateConroe1.9 mi153GROUNDWATERUNRESOLVED
Lakeview Pointe Apartments PrivateConroe1.9 mi44GROUNDWATERIn compliance
Riverwalk Subdivision PrivateConroe1.9 mi2,820GROUNDWATERIn compliance
Settlers Crossing PrivateConroe1.9 mi240GROUNDWATERIn compliance
Texaba Subdivision PrivateConroe1.9 mi590GROUNDWATERIn compliance
Thousand Oaks PrivateConroe1.9 mi1,158GROUNDWATERIn compliance
Grand Harbor Water System PrivateConroe1.9 mi2,370GROUNDWATERIn compliance
Lakewood On Lake Conroe Poa PrivateConroe1.9 mi96GROUNDWATER1 HEALTH-BASED · 5YR
Old Mill Lake PrivateConroe1.9 mi300GROUNDWATERIn compliance
Falls Of Wildwood PrivateConroe1.9 mi54GROUNDWATERIn compliance
Millers Crossing PrivateConroe1.9 mi159GROUNDWATERIn compliance
Harborside PrivateConroe1.9 mi432GROUNDWATERIn compliance
Sunrise Ranch PrivateConroe1.9 mi468GROUNDWATERUNRESOLVED
Deer Run PrivateConroe1.9 mi372GROUNDWATERIn compliance
Lake South Wsc MunicipalConroe1.9 mi628GROUNDWATERUNRESOLVED
Emerald Lakes Subdivision PrivateConroe1.9 mi1,053GROUNDWATERIn compliance
Rio Vista Subdivision PrivateConroe1.9 mi942GROUNDWATERIn compliance
A & S Water Services PrivateConroe1.9 mi52GROUNDWATERUNRESOLVED
Deer Pines Subdivision PrivateConroe1.9 mi558GROUNDWATERUNRESOLVED
Deer Trail Water District PrivateConroe1.9 mi693GROUNDWATERUNRESOLVED
Lexington Heights Subdivision PrivateConroe1.9 mi681GROUNDWATERUNRESOLVED
Kinard Estates PrivateConroe1.9 mi254GROUNDWATERIn compliance
Corbett Water System 1 PrivateConroe1.9 mi85GROUNDWATERIn compliance
River Bend Water System PrivateConroe1.9 mi69GROUNDWATERIn compliance
Claire Street Water System PrivateConroe1.9 mi84GROUNDWATERIn compliance
Yeager Estates Addition PrivateConroe1.9 mi57GROUNDWATERIn compliance
Timer Water System PrivateConroe1.9 mi46GROUNDWATERUNRESOLVED

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 8,759. Why we surface this →

POPULATION SHARE
49.6%

Low-income

POPULATION SHARE
63.8%

People of color

POPULATION SHARE
5.5%

Under age 5

POPULATION SHARE
11.7%

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.