Toxin Scout

Air quality and drinking water coverage in Marshall, TX

Review government records associated with Marshall, Texas.

Toxin Scout is in beta. Please verify important findings with the linked sources.

What the Marshall records show

Water quality and PFAS
1 candidate water system shown.Source date: Violations as of Q1 2026
Air quality and emissions
3 monitoring records shown. Observation year: 2025.Source date: AQS data as of 2026
Land and cleanup records
No Superfund records returned in this report; 2 brownfield records shown.
Infrastructure and incidents
No pipeline incident records returned in this report; 3 RMP facility records shown (earlier stored inventory, current location coverage unverified).

Water quality in Marshall

Drinking water quality

Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.

Drinking Water Compliance

Public water-system records for Marshall, TX from EPA SDWIS.

City of Marshall

Active monitoring or reporting issue detected in EPA SDWIS.

Reviewed: active/open records as of Q1 2026

City listed in EPA records · Serves 23,091 people

Data from EPA SDWIS

PFAS Screening

PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Apr 2025.

Drinking Water PFAS Monitoring

EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.

Open data source: EPA UCMR5

PFAS detections below EPA limits.

Nearby PFAS Investigation Sites

DoD records are nearby site investigations, not Marshall drinking-water detections. Record names come from the source database and can be broad.

Open data source: DoD PFAS

No DoD PFAS investigation records shown for this report.

Rivers, lakes and groundwater

Impaired Water Bodies

No health-relevant impairment records shown among the assessment records in this report.

Reviewed: source records as of 2026

Discharge

Discharge Permits (NPDES)

3

NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.

Open data source: EPA ECHO

Violation records

Marshall Minerals Inc

Last inspected: Dec 2025

Open data source: EPA ECHO
Status: Violation Identified · 1 of 12 quarters with noncompliance
Norit Americas Inc

Last inspected: Dec 2025

Open data source: EPA ECHO
Status: Violation Identified · 4 of 12 quarters with noncompliance
Effluent Limit Violations,Not Otherwise Specified · FY1998
Violation Of A Permit Requirement · FY1998
Toxic Release Inventory (Section 313) · FY2004
Violation Of A Permit Requirement · FY2001
Effluent Limit Violations,Not Otherwise Specified · FY2001
Violation Of A Permit Requirement · FY1998

Data from EPA ECHO

To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.

Water Quality MonitoringThis report includes 3 monitoring station records from the Water Quality Portal. It identified no recent results above an applicable comparison value. Some stations may lack recent or comparable results.

Reviewed: source records as of 2026

Open data source: Water Quality Portal

Air quality and emissions in Marshall

Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.

Air Quality Assessment

EPA AirToxScreen — Estimated Cancer Risk

1
50estimated additional cancer cases per million people

Harrison County

Assessment year: 2020

Open data source: EPA AirToxScreen
Lower risk99th percentile nationallyHigher risk

According to EPA, a cancer risk of 50-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 50 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.

Top modeled source groups

Factories & power plantsOil & gas operations

Data from EPA AirToxScreen

Nonattainment Status

No EPA nonattainment designation records shown for this report.

Air Quality Monitoring (AQS)

EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.

Hallsville Red Oak Road

Open data source: EPA AQS
SO2

Annual mean: 1.2 Parts per billion

Observation year: 2025

NO2

Annual mean: 5.3 Parts per billion

Observation year: 2025

Ozone

Annual mean: 0.037 Parts per million

Observation year: 2025

Data from EPA AQS

Facilities & Emissions

Air Quality Violations or Noncompliance

1

Facilities regulated under the Clean Air Act. CAA HPV flags indicate serious noncompliance such as exceeding emission limits.

Open data source: EPA ECHO

Air Violations

Norit Americas Inc

Last inspected: Dec 2025

Open data source: EPA ECHO
Status: Violation Identified · 4 of 12 quarters with noncompliance
CAA HPV flag: No·Programs: AIR, NPDES, RCRA, TRI, GHG

Data from EPA ECHO

Reported Air Emissions (TRI)

5

TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.

Marshall Minerals Inc

Reported: 2024

Open data source: View EPA TRI facility record
Zinc compounds
250.00 lbs
Copper And Copper Compounds
250.00 lbs
Manganese And Manganese Compounds
250.00 lbs
Total air: 750.00 lbsStack: 750.00 lbs

Norit Americas Inc

Reported: 2024

Open data source: View EPA TRI facility record
Manganese
0.60 lbs
Total air: 0.60 lbsStack: 0.60 lbs

Republic National Industries of Texas Lp

Reported: 2024

Open data source: View EPA TRI facility record
Xylene (mixed isomers)
9,391.93 lbs
Total air: 9,391.93 lbsFugitive: 5,049.71 lbsStack: 4,342.23 lbs

Land cleanup and hazardous waste records in Marshall

Contaminated Sites
Superfund SitesNo matching Superfund site records surfaced for this report.

Reviewed: source query run Nov 2026

Open data source: Search EPA ECHO

Brownfield Sites

2

Brownfield sites are properties where redevelopment is complicated by the presence of hazardous substances.

Open data source: Search EPA ECHO

2 sites with active cleanup or investigation status

Marshall Scrapyard Thigpen Property Block 1

800 South Washington Avenue, Marshall

Reported: Feb 2026

Open data source: EPA ACRES
Status:Cleanup Required
Programs:Cleanup Grant, Targeted Assessment, State Response Program
Media:Soil, Ground Water
Contaminants:Petroleum, PCBs, VOCs, Lead, Other Metals, PAHs
Old Texas Pacific Hospital Building

1602 Grand Ave, Marshall

Reported: Feb 2026

Open data source: EPA ACRES
Status:Cleanup Status Unknown
Programs:State Response Program
Media:Soil, Ground Water
Contaminants:Lead, Other Metals
Waste Facilities

Hazardous Waste — RCRA Handlers

2

Facilities with hazardous-waste handler records under RCRA in the reviewed 5-mile city-center search area. Active handler status is separate from air, water, or other ECHO compliance violations, which are shown in their own sections.

Active RCRA handler records in the reviewed city search area

Lowes of Marshall 1762
Open data source: EPA ECHO
Status: Active hazardous-waste handler record
Active handler
Republic Industries Inc
Open data source: EPA ECHO
Status: Active hazardous-waste handler record
Active handler·Last RCRA inspection: Jun 25, 2025

Underground Storage Tanks

No release reports shown in this group.

Reviewed: active/open records as of 2018

Data from EPA UST Finder

On-Site Waste Disposal (TRI)No TRI-reported on-site land disposal records surfaced for this city report.

Reviewed: reporting year 2024

Open data source: Search EPA ECHO
Military & Industrial
Formerly Used Defense SitesNo USACE FUDS property records matched this report’s search area.
Open data source: USACE FUDS

MSHA Mine and Extraction Sites

3
Data as of Nov 2026

Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.

More MSHA records matched the search than this preview shows.

Open data source: MSHA

No records shown in this group.

Reviewed: status dates within last 5 years

Data from MSHA

Hydraulic Fracturing Wells

3
Data as of Mar 2026

FracFocus Chemical Disclosure Registry — national registry of chemicals used in hydraulic fracturing operations, as reported by operators to the Ground Water Protection Council and Interstate Oil and Gas Compact Commission.

Open data source: FracFocus

FracFocus well disclosures (3)

Bland-Garrett (aw) 1h
Sabine Oil & Gas Corporation·Well API number: 42203352980000
Open data source: Search FracFocus
Frac date: May 2018·12,051,640 gal water·Depth: 10,385.429 ft
Cox H #2h
Comstock Oil & Gas·Well API number: 42203356120000
Open data source: Search FracFocus
Frac date: Dec 2023·29,632,430.52 gal water·Depth: 11,227 ft
Cox H #3h
Comstock Oil & Gas·Well API number: 42203356130000
Open data source: Search FracFocus
Frac date: Dec 2023·30,433,638.06 gal water·Depth: 11,118 ft

Data from FracFocus

Radon Context

County radon potential

EPA Zone 3Lower radon potential

Harrison County, TX

EPA Radon Zone Map (June 2024 release)

Open data source: EPA radon zone data

Harrison County is EPA Radon Zone 3 (low potential). EPA defines Zone 3 counties as having predicted average indoor screening levels below 2 pCi/L.

Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.

Find radon testing in TXZone classification per EPA Map of Radon Zones.

FEMA flood zones and infrastructure in Marshall

FEMA Flood Zones

1

FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.

FEMA Flood Zone: AESFHA

Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.

DFIRM Panel: 48203C
Chemical & Industrial Risk
Data as of Mar 2026

EPA Risk Management Program Records

Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.

EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.

Nuclear Facilities (NRC)No NRC-licensed nuclear facility records surfaced for this city report.
Open data source: NRC Reactor Map
Pipeline Incidents (PHMSA)No pipeline incident records surfaced for this city report in the PHMSA database.

Reviewed: 2000-present

Open data source: PHMSA incident data
Community Health

Community Health Indicators

Health outcomes from County Health Rankings. Values shown alongside state and national averages.

Harrison County, TexasPop. 69,955

County Health Rankings edition: 2024

Premature Death

County
10,929
State
7,875
National
7,972

Poor or Fair Health

County
19.3%
State
17.9%
National
14.2%

Poor Physical Health Days

County
4.0
State
3.3
National
3.3

Poor Mental Health Days

County
5.6
State
4.6
National
4.8

Adult Smoking

County
18.6%
State
13.3%
National
15.0%

Adult Obesity

County
38.6%
State
36.2%
National
34.0%

Air Pollution - Particulate Matter

County
8.2
State
8.6
National
7.3

Drinking water violation indicator

County
Yes
State
N/A
National
N/A

Diabetes Prevalence

County
11.5%
State
11.0%
National
9.6%

Life Expectancy

County
74.5
State
77.2
National
77.6

Environmental questions about Marshall, Texas

Has PFAS been found in the water in Marshall, Texas?

EPA testing found PFAS in water samples from the City of Marshall. Results dated Apr 23, 2025 include PFPeA at 0.0072 micrograms per liter.

Check with the utility that serves your address for its testing results.

EPA water testing results

What do EPA records say about tap water in Marshall, Texas?

EPA drinking water records on this page list 30 violations for the City of Marshall, including 2 marked active.

Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.

View on EPA SDWIS

What do annual air monitors show near Marshall, Texas?

Nearby EPA monitoring stations provide annual air quality measurements for Marshall.

The monitoring station at Hallsville Red Oak Road recorded an annual average of 1.2 Parts per billion for sulfur dioxide in 2025.

The monitoring station at Karnack recorded an annual average of 5.3 Parts per billion for nitrogen dioxide in 2025.

The monitoring station at Karnack recorded an annual average of 0.037 Parts per million for ozone in 2025.

Download 2025 EPA annual monitor dataCurrent air quality on AirNow

Is there radon in Marshall, Texas?

The radon data for Marshall covers Harrison County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.

EPA Radon Zones data

Are there Superfund or brownfield sites near Marshall, Texas?

No Superfund sites were returned for this city report.

This city report shows 2 brownfield sites: Marshall Scrapyard Thigpen Property Block 1; Old Texas Pacific Hospital Building.

EPA Superfund recordsView on EPA ECHOView on EPA ECHO

What is the life expectancy in Marshall, Texas?

The county data for Marshall reports a life expectancy of 74.5 years in Harrison County, Texas.

The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.

Harrison County health data

What does the data say about premature deaths in Marshall, Texas?

The county data for Marshall reports 10,929 years of life lost to deaths before age 75 per 100,000 residents in Harrison County, Texas. This measure adds up the years lost to early deaths and adjusts for differences in population age.

The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.

Harrison County health data

Is there air pollution in Marshall, Texas?

The county data for Marshall lists fine-particle pollution (PM2.5) at 8.2 micrograms per cubic meter in Harrison County, Texas.

The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.

Harrison County health data