Collin, 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.
Environmental data for Collin in Texas · Population: 1,116,601
TRI sites such as Texas Instruments Inc; Encore Wire Corp; Carlisle Coatings & Waterproofing Inc; SDWIS systems such as CITY OF PLANO; CITY OF FRISCO; CITY OF MCKINNEY anchor Collin, TX's EPA extract. Derived burden score 58/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Collin include CITY OF MELISSA; CITY OF ANNA; TOWN OF FAIRVIEW, while Texas Instruments Inc leads reported TRI pounds among local Form R filers. AQS median AQI 40 / peak 161 in 2024.
Burden score 58/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Collin -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Collin, TX: EPA TRI 2023 reporting year
Same facilities, both years
+21.9%
29 facilities that filed in 2022 and 2023
Whole inventory
+21.8%
206.0 thousand lb → 251.0 thousand lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 3 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Collin, TX's total reported releases rose from 205.8 thousand lb in 2022 to 251.0 thousand lb in 2023, based on EPA TRI filings.
- Collin, TX's land releases fell from 2.2 thousand lb in 2022 to 0 lb in 2023, based on EPA TRI filings.
- Collin, TX's water releases fell from 982 lb in 2022 to 596 lb in 2023, based on EPA TRI filings.
- Collin, TX's off-site transfers rose from 154.4 thousand lb in 2022 to 200.4 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 | 283 (78%) | 71 | 8 | 161 |
| 2023 | 261 (73%) | 74 | 19 | 154 |
| 2022 | 289 (81%) | 63 | 7 | 143 |
| 2021 | 294 (82%) | 55 | 7 | 154 |
| 2020 | 317 (87%) | 45 | 2 | 154 |
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 (35)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CITY OF PLANO | 292,059 | 0 |
| CITY OF FRISCO | 231,910 | 0 |
| CITY OF MCKINNEY | 224,043 | 0 |
| CITY OF ALLEN | 113,746 | 0 |
| CITY OF CELINA | 52,701 | 0 |
| CITY OF WYLIE | 48,393 | 0 |
| TOWN OF PROSPER | 42,598 | 0 |
| CITY OF PRINCETON | 37,019 | 0 |
| CITY OF MELISSA | 26,234 | 2 |
| CULLEOKA WSC | 24,615 | 0 |
| CITY OF ANNA | 23,960 | 3 |
| CITY OF MURPHY | 21,082 | 0 |
| EAST FORK SUD | 17,589 | 0 |
| BEAR CREEK SUD | 15,822 | 0 |
| WYLIE NORTHEAST SUD | 11,430 | 0 |
| TOWN OF FAIRVIEW | 11,100 | 2 |
| NORTH COLLIN SUD | 10,716 | 1 |
| CITY OF JOSEPHINE | 9,800 | 0 |
| CITY OF LUCAS | 8,378 | 0 |
| CITY OF PARKER | 6,486 | 0 |
| CITY OF FARMERSVILLE | 5,312 | 2 |
| NEVADA SUD | 4,218 | 0 |
| VERONA SUD | 3,672 | 0 |
| MILLIGAN WSC | 3,364 | 0 |
| FROGNOT SUD | 2,643 | 0 |
| DESERT WSC | 2,091 | 1 |
| SEIS LAGOS UTILITY DISTRICT | 2,037 | 1 |
| NORWOOD WSC | 1,368 | 0 |
| CITY OF BLUE RIDGE | 1,189 | 0 |
| NORTH FARMERSVILLE WSC | 747 | 7 |
| AIR PARK ESTATES | 96 | 0 |
| NORTH TEXAS MWD WYLIE WTP | 90 | 0 |
| NORTH TEXAS MWD - BONHAM WTP | 0 | 0 |
| NORTH TEXAS MWD LEONARD WTP | 0 | 0 |
| NORTH TEXAS MWD TAWAKONI WTP | 0 | 0 |
TRI Facilities (37)
Cities in Collin (21)
Frequently Asked Questions
What is the environmental risk level in Collin, Texas? ▼
Are there Superfund sites in Collin? ▼
How many toxic release facilities are in Collin? ▼
What is the air quality in Collin? ▼
Is the drinking water safe in Collin? ▼
What environmental agencies cover Collin? ▼
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.