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Review government records associated with Dayton, Texas.
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Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Dayton, TX from EPA SDWIS.
City of Dayton
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 15,393 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASNo health-relevant impairment records shown among the assessment records in this report.
Reviewed: source records as of 2026
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with current violation flags surfaced for this city report.
Reviewed: active/open records as of Q4 2025
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.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
Liberty County
Assessment year: 2020
According to EPA, a cancer risk of 30-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 30 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top modeled source groups
Data from EPA AirToxScreen
EPA designates an area as nonattainment when air quality does not meet federal health-based standards (NAAQS) for a specific pollutant.
Houston-Galveston-Brazoria: Ozone
NonattainmentSevere 158-Hour Ozone (2008 Standard)
Original designation: Jul 2012
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Historical designations under the revoked 1997 ozone standard
These records describe historical designations. EPA revoked the 1997 ozone standard on April 6, 2015.
Houston-Galveston-Brazoria Area
Historical standard: 0.08 ppm (8-hour)
Historical designation: Nonattainment · Subpart 2/Severe 15
Original designation: Jun 2004
Open data source: EPA final revocation ruleEPA terminated this area's 1997 ozone anti-backsliding obligations effective March 16, 2020. Separate SIP requirements may apply.
Open data source: EPA final anti-backsliding termination ruleData from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Baytown
Annual mean: 9.8 Micrograms/cubic meter (LC)
Observation year: 2025
Baytown Garth
Annual mean: 0.040 Parts per million
EPA primary exceedance count: 5 (Ozone 8-hour 2015)
Observation year: 2025
Channelview
Annual mean: 20.9 Parts per billion
Observation year: 2025
Data from EPA AQS
Facilities regulated under the Clean Air Act. CAA HPV flags indicate serious noncompliance such as exceeding emission limits.
Air Violations
Last inspected: Dec 2025
Data from EPA ECHO
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
Global Tubing LLC Coiled Tubing Manufacturing Facility in Da
Reported: 2024
Heidelberg Materials - Dayton Rmc
Reported: 2024
Indorama Ventures Oxides LLC
Reported: 2024
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
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
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Reviewed: reporting year 2024
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.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
Liberty County, TX
EPA Radon Zone Map (June 2024 release)
Liberty 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.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Special Flood Hazard Area — 1% annual chance of shallow flooding (sheet flow, 1-3 feet).
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.
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
Recent Incidents (last 5 years)
DOW PIPELINE LLC - CAYUSE
Incident date: Oct 3, 2024
Property damage: $437,000
ONEOK NGL PIPELINE, LLC
Incident date: Oct 14, 2025
Property damage: $64,325
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Liberty County, TexasPop. 101,992
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 11,388 | 7,875 | 7,972 |
| Poor or Fair Health | 23.0% | 17.9% | 14.2% |
| Poor Physical Health Days | 4.4 | 3.3 | 3.3 |
| Poor Mental Health Days | 5.7 | 4.6 | 4.8 |
| Adult Smoking | 20.4% | 13.3% | 15.0% |
| Adult Obesity | 41.1% | 36.2% | 34.0% |
| Air Pollution - Particulate Matter | 9.6 | 8.6 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 12.6% | 11.0% | 9.6% |
| Life Expectancy | 72.9 | 77.2 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Dayton.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 9 violations for the City of Dayton, including 1 marked active.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Dayton.
The monitoring station at Baytown recorded an annual average of 9.8 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The monitoring station at Baytown Garth recorded an annual average of 0.04 Parts per million for ozone in 2025.
The monitoring station at Channelview recorded an annual average of 20.9 Parts per billion for nitrogen dioxide in 2025.
The radon data for Dayton covers Liberty County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
No Superfund or brownfield sites were returned for this city report.
The county data for Dayton reports a life expectancy of 72.9 years in Liberty County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Dayton reports 11,388 years of life lost to deaths before age 75 per 100,000 residents in Liberty 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.
The county data for Dayton lists fine-particle pollution (PM2.5) at 9.6 micrograms per cubic meter in Liberty County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
Federal pipeline records list an incident involving Dow Pipeline LLC-Cayuse near Dayton on Oct 3, 2024. The reported release was hvl or other flammable or toxic fluid which is a gas at ambient conditions.
Federal pipeline records list an incident involving Oneok Ngl Pipeline, LLC near Dayton on Oct 14, 2025. The reported release was hvl or other flammable or toxic fluid which is a gas at ambient conditions.
Federal pipeline records list an incident involving Enterprise Products Operating LLC near Dayton on Apr 11, 2015. The reported release was hvl or other flammable or toxic fluid which is a gas at ambient conditions.