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Calhoun, TX

Moderate Risk (57/100)

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 Calhoun in Texas · Population: 19,921

TRI sites such as Ineos Nitriles USA LLC Green Lake Plant; Formosa Plastics Corp Texas; Union Carbide Corp Seadrift Plant; SDWIS systems such as CITY OF PORT LAVACA; CITY OF SEADRIFT; PORT OCONNOR IMPROVEMENT DISTRICT; NPL sites such as ALCOA (Point Comfort)/Lavaca Bay anchor Calhoun, TX's EPA extract. Derived burden score 57/100 (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 Calhoun include CITY OF PORT LAVACA; PORT OCONNOR IMPROVEMENT DISTRICT; CITY OF POINT COMFORT, while Ineos Nitriles USA LLC Green Lake Plant leads reported TRI pounds among local Form R filers. No AQS county monitors report here.

Burden score 57/100 (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 Calhoun -- 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 Calhoun, TX: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

-1.7%

8 facilities that filed in 2022 and 2023

Whole inventory

-1.7%

21.9 million lb → 21.5 million lb, every facility that filed

  • Calhoun, TX's total reported releases fell from 21.9 million lb in 2022 to 21.5 million lb in 2023, based on EPA TRI filings.
  • Calhoun, TX's off-site transfers rose from 87.5 thousand lb in 2022 to 428.0 thousand lb in 2023, based on EPA TRI filings.
  • Calhoun, TX's water releases rose from 15.0 thousand lb in 2022 to 50.2 thousand lb in 2023, based on EPA TRI filings.
  • Calhoun, TX's air releases rose from 2.8 million lb in 2022 to 3.3 million lb in 2023, based on EPA TRI filings.
County population (Census ACS)
19,921
TRI Facilities
8
Water Systems
8
Superfund Sites
1
Total Releases
104.5M lbs

Water Systems (8)

System System pop (SDWIS) Violations
CITY OF PORT LAVACA 12,000 80
CITY OF SEADRIFT 1,577 0
PORT OCONNOR IMPROVEMENT DISTRICT 1,139 9
CITY OF POINT COMFORT 759 9
PORT ALTO HOA DISTRICT 1 213 20
SHOALWATER FLATS ASSOCIATION 171 0
PORT ALTO WSC 96 0
SEAPORT LAKES SUBDIVISION 42 32

TRI Facilities (8)

# Facility Total Releases
1 Ineos Nitriles USA LLC Green Lake Plant 90.2M lbs
2 Formosa Plastics Corp Texas 8.3M lbs
3 Union Carbide Corp Seadrift Plant 5.5M lbs
4 Braskem America Inc Seadrift Plant 302.2K lbs
5 Seadrift Coke LP 64.5K lbs
6 Gulfmark Energy Inc 1.4K lbs
7 Alcoa World Alumina LLC 5 lbs
8 Calhoun Chemicals LLC 0 lbs

Superfund Sites (1)

Site Name Status HRS Score
ALCOA (Point Comfort)/Lavaca Bay NPL Site 50.00

Cities in Calhoun (4)

Port Lavaca
4 facilities · 4 water
Point Comfort
2 facilities · 1 water
Seadrift
2 facilities · 1 water
Port O Connor
0 facilities · 2 water

Frequently Asked Questions

What is the environmental risk level in Calhoun, Texas? ▼
Calhoun, TX has an environmental risk score of 57/100 (Moderate Risk), based on 8 TRI facilities, 1 Superfund sites, and 8 water systems on record. 5 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Calhoun? ▼
Yes, Calhoun, TX has 1 Superfund site on the EPA National Priorities List (NPL). Superfund sites are contaminated locations that require long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
How many toxic release facilities are in Calhoun? ▼
Calhoun, TX has 8 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 104.5M lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Calhoun? ▼
Air quality monitoring data (EPA AQS) is not available for Calhoun, TX. This may indicate no EPA monitoring stations are located in the county. For regional air quality data, see the state environmental profile or visit EPA's AirNow.gov.
Is the drinking water safe in Calhoun? ▼
Calhoun, TX has 8 EPA-regulated water systems. 5 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Calhoun? ▼
Environmental compliance in Calhoun, Texas is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Texas state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

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.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro