What the Katy 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; No brownfield records returned in this report.
- Infrastructure and incidents
- 2 pipeline incident records shown; 3 RMP facility records shown (earlier stored inventory, current location coverage unverified).Source date: PHMSA data as of Q1 2026
Water quality in Katy
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
Drinking Water Compliance
Public water-system records for Katy, TX from EPA SDWIS.
City of Katy
Active major or public-notice drinking-water issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 25,253 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 PFASImpaired Water Bodies
Impaired Water Bodies
No health-relevant impairment records shown among the assessment records in this report.
Reviewed: source records as of 2026
Discharge Permits (NPDES)
2
Discharge Permits (NPDES)
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
Violation records
Last inspected: Dec 2025
Last inspected: Dec 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
Air quality and emissions in Katy
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
EPA AirToxScreen — Estimated Cancer Risk
EPA AirToxScreen — Estimated Cancer Risk
Waller 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
Nonattainment Status
1
Nonattainment Status
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
Air Quality Monitoring (AQS)
Air Quality Monitoring (AQS)
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Houston Bayland Park
Annual mean: 15.8 Parts per billion
Observation year: 2025
Annual mean: 0.041 Parts per million
EPA primary exceedance count: 13 (Ozone 8-hour 2015)
Observation year: 2025
Annual mean: 9.0 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
Reported Air Emissions (TRI)
3
Reported Air Emissions (TRI)
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
K-T Galvanizing Co
Reported: 2024
Katy Bagging Facility
Reported: 2024
Land cleanup and hazardous waste records in Katy
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
Hazardous Waste — RCRA Handlers
2
Hazardous Waste — RCRA Handlers
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
Underground Storage Tanks
Underground Storage Tanks
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Reviewed: reporting year 2024
MSHA Mine and Extraction Sites
MSHA Mine and Extraction Sites
No MSHA mine or extraction site records shown for this report.
Hydraulic Fracturing Wells
3
Hydraulic Fracturing Wells
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.
FracFocus well disclosures (3)
Data from FracFocus
County radon potential
County radon potential
Waller County, TX
EPA Radon Zone Map (June 2024 release)
Waller 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 and infrastructure in Katy
FEMA Flood Zones
FEMA Flood Zones
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Minimal flood hazard — outside the 1% and 0.2% annual chance floodplains.
EPA Risk Management Program Records
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.
Pipeline Incidents
2
Pipeline Incidents
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
Recent Incidents (last 5 years)
PHILLIPS 66 PIPELINE LLC
Incident date: Jul 18, 2024
- Type
- Hazardous Liquid
- Cause
- CORROSION FAILURE
- Released
- HVL OR OTHER FLAMMABLE OR TOXIC FLUID WHICH IS A GAS AT AMBIENT CONDITIONS
Property damage: $1,845,336
DCP MIDSTREAM, LP
Incident date: Nov 1, 2023
- Type
- Gas Transmission/Gathering
- Cause
- EQUIPMENT FAILURE
- Released
- NATURAL GAS
Property damage: $6,000
Data from PHMSA
Community Health Indicators
Community Health Indicators
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Waller County, TexasPop. 61,894
County Health Rankings edition: 2024
Premature Death
- County
- 8,260
- State
- 7,875
- National
- 7,972
Poor or Fair Health
- County
- 18.3%
- State
- 17.9%
- National
- 14.2%
Poor Physical Health Days
- County
- 3.7
- State
- 3.3
- National
- 3.3
Poor Mental Health Days
- County
- 5.1
- State
- 4.6
- National
- 4.8
Adult Smoking
- County
- 15.5%
- State
- 13.3%
- National
- 15.0%
Adult Obesity
- County
- 37.7%
- State
- 36.2%
- National
- 34.0%
Air Pollution - Particulate Matter
- County
- 10.1
- State
- 8.6
- National
- 7.3
Drinking water violation indicator
- County
- Yes
- State
- N/A
- National
- N/A
Diabetes Prevalence
- County
- 11.3%
- State
- 11.0%
- National
- 9.6%
Life Expectancy
- County
- 76.9
- State
- 77.2
- National
- 77.6
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 8,260 | 7,875 | 7,972 |
| Poor or Fair Health | 18.3% | 17.9% | 14.2% |
| Poor Physical Health Days | 3.7 | 3.3 | 3.3 |
| Poor Mental Health Days | 5.1 | 4.6 | 4.8 |
| Adult Smoking | 15.5% | 13.3% | 15.0% |
| Adult Obesity | 37.7% | 36.2% | 34.0% |
| Air Pollution - Particulate Matter | 10.1 | 8.6 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 11.3% | 11.0% | 9.6% |
| Life Expectancy | 76.9 | 77.2 | 77.6 |
Environmental questions about Katy, Texas
Has PFAS been found in the water in Katy, Texas?
This report does not have PFAS sample results for the candidate water systems in Katy.
Check with the utility that serves your address for its testing results.
What do EPA records say about tap water in Katy, Texas?
EPA drinking water records on this page list 2 violations for the City of Katy.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
What do annual air monitors show near Katy, Texas?
Nearby EPA monitoring stations provide annual air quality measurements for Katy.
The monitoring station at Houston Bayland Park recorded an annual average of 15.8 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Houston Bayland Park recorded an annual average of 0.041 Parts per million for ozone in 2025.
The monitoring station at Houston Bayland Park recorded an annual average of 9 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
Is there radon in Katy, Texas?
The radon data for Katy covers Waller County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
Are there Superfund or brownfield sites near Katy, Texas?
No Superfund or brownfield sites were returned for this city report.
What is the life expectancy in Katy, Texas?
The county data for Katy reports a life expectancy of 76.9 years in Waller County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
What does the data say about premature deaths in Katy, Texas?
The county data for Katy reports 8,260 years of life lost to deaths before age 75 per 100,000 residents in Waller 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.
Is there air pollution in Katy, Texas?
The county data for Katy lists fine-particle pollution (PM2.5) at 10.1 micrograms per cubic meter in Waller County, Texas.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
What environmental incidents are recorded near Katy, Texas?
Federal pipeline records list an incident involving Phillips 66 Pipeline LLC near Katy on Jul 18, 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 Dcp Midstream, LP near Katy on Nov 1, 2023. The reported release was natural gas.