Webb, 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 Webb in Texas · Population: 267,731
TRI sites such as Midwest Sterilization Corp; Reveille Cryogenic Plant; Laredo Border Patrol Sector HQ TX11589; SDWIS systems such as CITY OF LAREDO; WEBB COUNTY WATER UTILITIES; WEBB COUNTY WATER DISPENSER anchor Webb, TX's EPA extract. Derived burden score 43/100 (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 Webb include CITY OF LAREDO; WEBB COUNTY WATER UTILITIES; WEBB COUNTY WATER DISPENSER, while Midwest Sterilization Corp leads reported TRI pounds among local Form R filers. AQS median AQI 45 / peak 129 in 2024.
Burden score 43/100 (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 Webb -- 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 Webb, TX: EPA TRI 2023 reporting year
Same facilities, both years
-8.1%
7 facilities that filed in 2022 and 2023
Whole inventory
-8.1%
2.0 million lb → 1.9 million lb, every facility that filed
- Webb, TX's total reported releases fell from 2.0 million lb in 2022 to 1.9 million lb in 2023, based on EPA TRI filings.
- Webb, TX's chemicals reported rose from 16 in 2022 to 18 in 2023, based on EPA TRI filings.
- Webb, TX's off-site transfers fell from 2.0 million lb in 2022 to 1.9 million lb in 2023, based on EPA TRI filings.
- Webb, TX's air releases rose from 14.2 thousand lb in 2022 to 14.7 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 | 211 (58%) | 140 | 15 | 129 |
| 2023 | 227 (62%) | 133 | 5 | 133 |
| 2022 | 215 (60%) | 144 | 2 | 114 |
| 2021 | 197 (54%) | 168 | 0 | 97 |
| 2020 | 217 (59%) | 146 | 2 | 163 |
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 (8)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CITY OF LAREDO | 260,046 | 8 |
| WEBB COUNTY WATER UTILITIES | 8,358 | 82 |
| WEBB COUNTY WATER DISPENSER | 3,362 | 41 |
| ENCINAL WSC | 1,338 | 0 |
| MIRANDO CITY WSC | 460 | 24 |
| OILTON RURAL WSC | 411 | 1 |
| BRUNI RURAL WSC | 350 | 148 |
| LOS BOTINES WSC | 54 | 0 |
TRI Facilities (7)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Midwest Sterilization Corp | 3.7M lbs |
| 2 | Reveille Cryogenic Plant | 202.4K lbs |
| 3 | Laredo Border Patrol Sector HQ TX11589 | 62.8K lbs |
| 4 | Thompsonville Gas Plant | 27.7K lbs |
| 5 | Pilot Thomas Logistcs LLC - Laredo | 2.1K lbs |
| 6 | Reladyne Sun Coast LLC | 1.0K lbs |
| 7 | Plm Steel Pipes & Tubes | 0 lbs |
Cities in Webb (5)
Frequently Asked Questions
What is the environmental risk level in Webb, Texas? ▼
Are there Superfund sites in Webb? ▼
How many toxic release facilities are in Webb? ▼
What is the air quality in Webb? ▼
Is the drinking water safe in Webb? ▼
What environmental agencies cover Webb? ▼
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.