What environmental databases are included?

This page aggregates data from eight EPA databases: Safe Drinking Water (SDWIS), Superfund/NPL sites, Toxic Release Inventory (TRI), Air Quality Index (AQI), Leaking Underground Storage Tanks (LUST), NPDES water discharge permits, RCRA hazardous waste, and Brownfields.

What does the Air Quality Index (AQI) mean?

AQI is measured on a scale from 0 to 500. Values under 50 are 'Good,' 51-100 is 'Moderate,' and above 100 is 'Unhealthy for Sensitive Groups.' AQI is measured at the county level since air quality monitoring stations are sparse. Your town shares its county's AQI reading.

What is a Superfund site?

A Superfund site is a location contaminated by hazardous waste that has been placed on the EPA's National Priorities List (NPL) for long-term cleanup. These sites pose serious risks to human health and the environment. Cleanup can take decades and cost hundreds of millions of dollars.

Midlothian, TX Water Quality, EPA Sites & Air Quality Data

CSADallas-Fort Worth MSADallas-Fort Worth-Arlington#37/198 Population

Environmental Reporti

Air Qualityi

33Good

Water Systemsi

9community / 13 total

Water Violationsi

Air Quality — Ellis County (2025)i

AQS

The Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0–50 is considered good; 51–100 is moderate; above 100 may be unhealthy for sensitive groups.

Good

Median AQI

050100150200300

max 84

PM2.5 Daysi

Ozone Daysi

206

Drinking Wateri

SDWIS

Public water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Transient systems serve places like gas stations or restaurants. Violations indicate a system failed to meet federal drinking water standards.

Community Systemsi

Active Systemsi

Recent Violationsi

Community (9)

Non-Transient (3)

Transient (1)

Recent Violations (Last 5 Years)

CITY OF MIDLOTHIAN

5 violationsLatest: 2022-02-07

EPA

Historical Violations (Over 5 Years Ago)

SARDIS LONE ELM WSC

1 violationLatest: 2013-12-30

EPA

MOUNTAIN PEAK SUD

14 violationsLatest: 2019-10-27

EPA

VILLAGE SOUTH MOBILE HOME PARK

2 violationsLatest: 2014-01-01

EPA

EV Charging & Alternative Fuel Stationsi

AFDC

Publicly listed alternative fuel and EV charging stations within the municipality. Data from the U.S. Department of Energy. "Open" stations are currently available for use; "Planned" stations are approved but not yet operational.

Total Stationsi

EV Stationsi

Level 2 Portsi

ChargePoint Network

Google3800 Railport PkwyElectric8 L2ChargePoint Network