Dallas, TX
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against every other tracked county rather than against fixed national thresholds.
Environmental data for Dallas in Texas · Population: 2,603,816
Dallas, TX is tracked across three EPA datasets covering 50 Toxics Release Inventory (TRI) facilities, 55 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 71/100 (High Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 6.5M lbs of reported toxic releases under EPCRA Section 313, while 19 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 55 and a peak AQI of 185 in 2024, with 35% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 129 (35%) | 218 | 16 | 185 |
| 2023 | 122 (33%) | 216 | 26 | 172 |
| 2022 | 164 (45%) | 184 | 17 | 148 |
| 2021 | 210 (58%) | 145 | 9 | 174 |
| 2020 | 218 (60%) | 142 | 6 | 135 |
Source: EPA Air Quality System (AQS) Annual AQI by County EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Texas, see the EPA's AirNow.gov.
Water Systems (55)
| System | Population | Violations |
|---|---|---|
| DALLAS WATER UTILITY | 1,356,479 | 0 |
| CITY OF IRVING | 264,546 | 0 |
| CITY OF ROWLETT | 66,212 | 0 |
| CITY OF DESOTO | 57,999 | 0 |
| CITY OF CEDAR HILL | 50,904 | 0 |
| CITY OF COPPELL | 43,193 | 0 |
| CITY OF LANCASTER | 40,449 | 0 |
| CITY OF FARMERS BRANCH | 40,246 | 0 |
| CITY OF SACHSE | 29,042 | 0 |
| CITY OF BALCH SPRINGS | 28,300 | 1 |
| CITY OF UNIVERSITY PARK | 25,278 | 0 |
| CITY OF SEAGOVILLE | 20,156 | 1 |
| TOWN OF ADDISON | 17,257 | 0 |
| KAUFMAN COUNTY FWSD 1A | 11,268 | 0 |
| TOWN OF HIGHLAND PARK | 8,959 | 0 |
| TOWN OF SUNNYVALE | 8,839 | 0 |
| KAUFMAN COUNTY FWSD 4A | 7,317 | 2 |
| CITY OF WILMER | 6,690 | 1 |
| KAUFMAN COUNTY MUD 14 | 6,432 | 0 |
| CITY OF HUTCHINS | 5,902 | 0 |
| FRISCO WEST WCID | 5,805 | 0 |
| CITY OF COCKRELL HILL | 3,820 | 0 |
| KAUFMAN COUNTY MUD 11 | 3,774 | 0 |
| KAUFMAN COUNTY FWSD 4B | 1,830 | 2 |
| KAUFMAN COUNTY MUD 9 | 1,473 | 0 |
| KAUFMAN COUNTY MUD 12 | 1,383 | 0 |
| LAJITAS ON THE RIO GRANDE | 942 | 0 |
| CRESSON CROSSROADS MUD 2 | 888 | 10 |
| LAKE VIEW MGMT & DEVELOPMENT DIST LONG C | 684 | 0 |
| HILLSIDE VILLAGE | 650 | 0 |
| ROLLING V RANCH WCID 3 OF WISE COUNTY | 576 | 0 |
| NEW FAIRVIEW MUD 1 | 537 | 0 |
| HIDEAWAY HILLS | 470 | 0 |
| BLM GW MHP, LLC | 390 | 1 |
| CLEARWATER DISTRIBUTION | 303 | 58 |
| MATTHEW ROAD WSC | 279 | 1 |
| D BAR B MOBILE HOME RANCH | 267 | 42 |
| BIXBY ESTATES | 225 | 1 |
| EVERGREEN ESTATES WATER SYSTEM | 162 | 4 |
| SUNHAVEN MOBILE HOME PARK | 160 | 0 |
| DALLAS COUNTY MUD 4 | 150 | 0 |
| COUNTRY OAKS MOBILE HOME PARK | 146 | 2 |
| EASTWOOD MOBILE HOME COURT | 140 | 0 |
| HILLCREST NORTH MUD | 114 | 0 |
| SNAKE RIVER MOBILE HOME PARK | 100 | 7 |
| LANDING AT HICKORY RIDGE | 87 | 2 |
| LONE OAK CABINS | 78 | 4 |
| CHART HOUSE CONDOMINIUM | 75 | 64 |
| EAGLE RIDGE MUD | 57 | 0 |
| WALDEN POND FWSD OF KAUFMAN COUNTY | 55 | 0 |
| CRESSON CROSSROADS MUD 2 KELLY RANCH | 45 | 0 |
| PARKERVILLE EAST MOBILE HOME PARK | 42 | 1 |
| MOON LAKE ESTATES | 31 | 0 |
| PLURIS ALABAMA LLC | 0 | 0 |
| DALLAS COUNTY PARK CITIES MUD | 0 | 1 |
TRI Facilities (50)
Cities in Dallas (17)
Frequently Asked Questions
What is the environmental risk level in Dallas, Texas? ▼
Are there Superfund sites in Dallas? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.