Ellis, TX
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Ellis in Texas · Population: 203,927
TRI sites such as Owens Corning Insulating Systems LLC - Waxahachie; Chaparral Steel Midlothian LP; Martin Marietta North Texas Cement LLC; SDWIS systems such as ROCKETT SUD; CITY OF MIDLOTHIAN; MOUNTAIN PEAK SUD anchor Ellis, TX's EPA extract. Derived burden score 68/100 (High Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
EPCRA disclosures in Ellis total 5.8M lbs; health-flagged SDWIS rows include CITY OF MIDLOTHIAN; MOUNTAIN PEAK SUD; BUENA VISTA BETHEL SUD, while Owens Corning Insulating Systems LLC - Waxahachie leads TRI pounds. AQS median AQI 36 / peak 101 in 2024.
Largest TRI sites in the extract: Owens Corning Insulating Systems LLC - Waxahachie; Chaparral Steel Midlothian LP; Martin Marietta North Texas Cement LLC. Named SDWIS systems: ROCKETT SUD; CITY OF MIDLOTHIAN; MOUNTAIN PEAK SUD. Burden score 68/100 (High Risk) is the only weighted composite here; tables reproduce EPA disclosure history, not a current-safety verdict.
Release-over-release change
What changed for Ellis, TX: EPA TRI 2023 reporting year
Same facilities, both years
+8.4%
37 facilities that filed in 2022 and 2023
Whole inventory
+8.8%
1.1 million lb → 1.3 million lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Ellis, TX's total reported releases rose from 1.1 million lb in 2022 to 1.2 million lb in 2023, based on EPA TRI filings.
- Ellis, TX's water releases rose from 2.2 thousand lb in 2022 to 7.4 thousand lb in 2023, based on EPA TRI filings.
- Ellis, TX's off-site transfers rose from 452.3 thousand lb in 2022 to 527.9 thousand lb in 2023, based on EPA TRI filings.
- Ellis, TX's land releases fell from 191.1 thousand lb in 2022 to 171.9 thousand lb in 2023, based on EPA TRI filings.
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 | 323 (89%) | 38 | 1 | 101 |
| 2023 | 286 (82%) | 60 | 2 | 112 |
| 2022 | 311 (85%) | 53 | 0 | 97 |
| 2021 | 262 (72%) | 100 | 1 | 105 |
| 2020 | 239 (65%) | 126 | 1 | 125 |
Source: 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 (20)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| ROCKETT SUD | 46,614 | 0 |
| CITY OF MIDLOTHIAN | 27,699 | 2 |
| MOUNTAIN PEAK SUD | 23,988 | 2 |
| SARDIS LONE ELM WSC | 20,736 | 0 |
| CITY OF GLENN HEIGHTS | 18,718 | 0 |
| CITY OF RED OAK | 18,577 | 0 |
| RICE WSC | 10,167 | 0 |
| BUENA VISTA BETHEL SUD | 8,218 | 4 |
| CITY OF OVILLA | 4,532 | 0 |
| CITY OF FERRIS | 3,070 | 2 |
| CITY OF PALMER | 3,015 | 0 |
| NASH FORRESTON WSC | 2,277 | 0 |
| CITY OF ITALY | 2,264 | 0 |
| SOUTH ELLIS COUNTY WATER SUPPLY | 1,767 | 0 |
| AVALON WSC | 1,218 | 1 |
| CITY OF MAYPEARL | 994 | 0 |
| CITY OF MILFORD | 796 | 1 |
| CITY OF BARDWELL | 692 | 4 |
| COTTONWOOD CREEK MOBILE HOME PARK | 225 | 0 |
| COMING OF CHRIST FULL GOSPEL CHURCH | 66 | 0 |
TRI Facilities (44)
Cities in Ellis (13)
Frequently Asked Questions
What is the environmental risk level in Ellis, Texas? ▼
Are there Superfund sites in Ellis? ▼
How many toxic release facilities are in Ellis? ▼
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What environmental agencies cover Ellis? ▼
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.