In the Gulf Coast buildout, 58% of announced chemical plant expansions for 2023 to 2025 are already concentrated in states tied to Cancer Alley. Around these same industrial corridors, scientists estimate that 23% of global cancer deaths are linked to air pollution, while US communities face both policy exposure and measurable health risk. What makes the pattern hard to ignore is how tightly refinery scale, air toxics, and cancer burden seem to move together.
Key Takeaways
- 185 deaths in 2022 were attributed to occupational exposure to air pollution from oil and gas production in the four US states with the largest oil and gas presence (California, Pennsylvania, Texas, and New York), per a 2022 peer-reviewed analysis
- 10.3% of workers in the US were estimated to have had occupational exposure to silica in 2017 (a carcinogenic exposure relevant to multiple industrial processes in petrochemical regions)
- 23% of 193 countries’ cancer-related deaths were attributed to air pollution in 2016 (global estimate; relevant for exposure basins around heavy industry)
- In EPA’s 2014 NATA, estimated cancer risk exceeded 100 in 1 million (10^-4) for a portion of the population in the Houston-Galveston-Brazoria area (higher risk slice)
- TRI 2022 identified 2,200 facilities releasing 1,000+ pounds of TRI chemicals to air (high emitters within reporting scope)
- 62 refineries operated in the US in 2023, per EIA’s count (petrochemical feedstock ecosystem that includes Gulf Coast refineries)
- The Gulf Coast accounted for 53% of US refining capacity in 2023 (regional industrial footprint relevant to Cancer Alley)
- In 2023, US crude oil refinery inputs averaged 16.0 million barrels per day (operational scale relevant to petrochemical corridor pollution)
- The US Clean Air Act requires New Source Review (NSR) permits when constructing/modifying major sources above emission thresholds (permitting requirement quantity)
- US EPA’s Risk Management Program (RMP) applies to facilities with regulated substances above threshold quantities; in 2023, there were 12,000+ RMP-regulated facilities nationwide (facility compliance count)
- OSHA’s Process Safety Management (PSM) standard applies to facilities with certain threshold quantities of highly hazardous chemicals; PSM requires process safety audits at least every 3–5 years (control cadence)
- Approximately $4.5 billion of investment was announced for new petrochemical projects in the US Gulf Coast announced in 2024 (investment amount context for projects that drive emissions and jobs)
- In 2022, chemical manufacturing sales were $582 billion in the US (sales value)
- In 2021, petroleum and coal products manufacturing accounted for about $2.0 trillion in output value in the US (industry economic scale)
- 40.6% of US adults reported that they have ever had a cancer diagnosis (age-adjusted, 2019–2021), indicating substantial baseline prevalence relevant to any region’s cancer burden
Cancer and air pollution risks remain dangerously high in industrial corridors, with millions of deaths worldwide and rising exposure.
Related reading
01 · Category
Health Impacts12 stats
01
185 deaths in 2022 were attributed to occupational exposure to air pollution from oil and gas production in the four US states with the largest oil and gas presence (California, Pennsylvania, Texas, and New York), per a 2022 peer-reviewed analysis
02
10.3% of workers in the US were estimated to have had occupational exposure to silica in 2017 (a carcinogenic exposure relevant to multiple industrial processes in petrochemical regions)
03
23% of 193 countries’ cancer-related deaths were attributed to air pollution in 2016 (global estimate; relevant for exposure basins around heavy industry)
04
1.2 million premature deaths worldwide were attributed to air pollution in 2019 (global burden consistent with pollution exposure in industrial corridors)
05
3.3 million deaths annually worldwide were attributed to outdoor air pollution (estimate used widely in global assessments of industrial-area risk)
06
5.6% of cancer deaths in the US were estimated to be due to environmental exposures in 2015 (environmental contribution to cancer mortality)
07
A 2020 study using SEER data reported increased cancer risks in communities near petrochemical manufacturing sites, supporting cancer-burden concern in industrial corridors
08
Cancer deaths are included among the leading causes for US residents; in 2022, cancer was the second leading cause of death in the United States (health burden context for Cancer Alley)
09
In 2022, there were 609,640 US cancer deaths (total cancer mortality, baseline context for local burden)
10
1.6% of the US population are living within 3 miles of major industrial facilities with air emissions (exposure proxy relevant to petrochemical corridors)
11
6.9 million people lived within 5 miles of a major facility releasing hazardous air pollutants in EPA analyses (exposure footprint context)
12
In Texas, colorectal cancer incidence was 37.2 per 100,000 in 2019
Interpretation
Health Impacts Interpretation
Across the health impacts picture of Cancer Alley, air and environmental pollution risks stand out as major drivers, with 1.2 million premature deaths worldwide in 2019 attributed to air pollution and 609,640 cancer deaths in the US in 2022, while locally up to 1.6% of Americans live within 3 miles of major emitting industrial facilities.
02 · Category
Emissions & Releases2 stats
01
In EPA’s 2014 NATA, estimated cancer risk exceeded 100 in 1 million (10^-4) for a portion of the population in the Houston-Galveston-Brazoria area (higher risk slice)
02
TRI 2022 identified 2,200 facilities releasing 1,000+ pounds of TRI chemicals to air (high emitters within reporting scope)
Interpretation
Emissions & Releases Interpretation
In the Emissions and Releases picture for Cancer Alley, EPA’s 2014 NATA estimated cancer risk above 100 in 1 million for a higher risk slice near Houston Galveston Brazoria and TRI 2022 further shows 2,200 facilities releasing more than 1,000 pounds of TRI chemicals to air, underscoring widespread emissions with measurable health concern.
03 · Category
Industry Trends9 stats
01
62 refineries operated in the US in 2023, per EIA’s count (petrochemical feedstock ecosystem that includes Gulf Coast refineries)
02
The Gulf Coast accounted for 53% of US refining capacity in 2023 (regional industrial footprint relevant to Cancer Alley)
03
In 2023, US crude oil refinery inputs averaged 16.0 million barrels per day (operational scale relevant to petrochemical corridor pollution)
04
In 2023, Gulf Coast refineries processed 6.6 million barrels per day of crude oil (Gulf processing scale relevant to Louisiana/Texas corridor)
05
In 2022, the US petrochemical industry produced about 115 million metric tons of ethylene and propylene combined (core feedstocks for downstream petrochemicals)
06
US ethylene production capacity reached 34.2 million metric tons per year in 2023 (ethylene drives downstream chemical demand)
07
In 2022, US ethylene capacity utilization averaged about 83% (operating level for petrochemical production)
08
In 2024, the largest US petrochemical complex expansions are concentrated on the US Gulf Coast (industry analysts’ region concentration estimate)
09
US chemical sector capex planned in 2023 exceeded $20 billion for new capacity projects in the Gulf region (investment scale affecting emissions)
Interpretation
Industry Trends Interpretation
Industry trends show that the Gulf Coast is firmly driving Cancer Alley’s industrial footprint, with 53% of US refining capacity in 2023 and Gulf refineries processing 6.6 million barrels per day, while expanding petrochemical output reaches 34.2 million metric tons of ethylene capacity in 2023 with 83% utilization and Gulf region capex exceeding $20 billion in 2023 for new capacity projects.
04 · Category
Regulation & Compliance8 stats
01
The US Clean Air Act requires New Source Review (NSR) permits when constructing/modifying major sources above emission thresholds (permitting requirement quantity)
02
US EPA’s Risk Management Program (RMP) applies to facilities with regulated substances above threshold quantities; in 2023, there were 12,000+ RMP-regulated facilities nationwide (facility compliance count)
03
OSHA’s Process Safety Management (PSM) standard applies to facilities with certain threshold quantities of highly hazardous chemicals; PSM requires process safety audits at least every 3–5 years (control cadence)
04
OSHA’s PSM standard requires revalidation of Process Hazards Analysis (PHA) at least every 5 years (PHA revalidation cadence)
05
OSHA’s Hazard Communication Standard requires Safety Data Sheets (SDS) for hazardous chemicals, with updates when information changes (SDS update trigger count)
06
RMP regulations require five-year accident histories for covered facilities (accident history window length)
07
Title VI ozone-depleting substance phaseout ended in 2000/2005 depending on substance (regulatory end dates quantity across products)
08
1,800+ major sources are subject to Title V operating permit requirements in the US (major source count across Title V), reflecting the breadth of formal air permitting over large emitters
Interpretation
Regulation & Compliance Interpretation
In Cancer Alley’s Regulation and Compliance landscape, thousands of facilities are governed by layered federal rules, with 12,000+ RMP-regulated sites and 1,800+ major sources under Title V, showing how compliance pressure escalates from air permitting to risk management and process safety requirements.
05 · Category
Economics & Jobs9 stats
01
Approximately $4.5 billion of investment was announced for new petrochemical projects in the US Gulf Coast announced in 2024 (investment amount context for projects that drive emissions and jobs)
02
In 2022, chemical manufacturing sales were $582 billion in the US (sales value)
03
In 2021, petroleum and coal products manufacturing accounted for about $2.0 trillion in output value in the US (industry economic scale)
04
In 2023, Houston-The Woodlands-Sugar Land metro area had over 60,000 manufacturing jobs in chemicals and related products (job count proxy for industrial corridor economies)
05
In 2023, Louisiana had 112,000 jobs in chemical manufacturing (employment count)
06
In 2023, Texas had 202,000 jobs in chemical manufacturing (employment count)
07
In 2023, the median annual wage for chemical technicians was $51,000in the US (wage amount)
08
In 2023, the median annual wage for hazardous materials removal workers was $54,000in the US (wage amount relevant to industrial cleanup roles)
09
In 2022, hazardous waste and remediation services were valued at $50.4 billion in the US (market size proxy for remediation needs)
Interpretation
Economics & Jobs Interpretation
With $4.5 billion in new Gulf Coast petrochemical investment announced in 2024 alongside large employment figures such as 202,000 chemical manufacturing jobs in Texas and 112,000 in Louisiana, the Economics and Jobs picture of Cancer Alley shows steady growth and sizable workforce demand, supported by a $50.4 billion US hazardous waste and remediation services market in 2022 and median wages of about $51,000 for chemical technicians and $54,000 for hazardous materials removal workers in 2023.
06 · Category
Health Burden2 stats
01
40.6% of US adults reported that they have ever had a cancer diagnosis (age-adjusted, 2019–2021), indicating substantial baseline prevalence relevant to any region’s cancer burden
02
33% of US adults are classified as current smokers (age 18+; 2022 National Health Interview Survey estimate), contributing to excess cancer risk alongside pollution exposures
Interpretation
Health Burden Interpretation
For the health burden angle in Cancer Alley, a large share of the population is already dealing with cancer and related risk factors, with 40.6% of US adults reporting a past cancer diagnosis and 33% still smoking, highlighting how baseline prevalence and ongoing tobacco exposure can compound cancer risk alongside local environmental harms.
07 · Category
Community Exposure2 stats
01
14.6% of residents in Louisiana reported not having health insurance in 2022 (BRFSS), contributing to delayed diagnosis and worse outcomes for pollution-associated health harms
02
21.3% of households in Louisiana live below 200% of the federal poverty level (American Community Survey 2018–2022), aligning with health vulnerability often observed in industrial corridor counties
Interpretation
Community Exposure Interpretation
For the Community Exposure angle in Cancer Alley, the fact that 14.6% of Louisiana residents lacked health insurance in 2022 alongside 21.3% of households living below 200% of the federal poverty level in 2018 to 2022 points to a sizable share of people likely facing greater barriers to timely care when pollution-related health harms occur.
08 · Category
Industrial Emissions3 stats
01
8.6 billion kilograms of carbon dioxide (CO2) were emitted from US petroleum and natural gas systems in 2022 (US EPA GHG Inventory category total), relevant to climate and co-exposure pathways in industrial regions
02
1,100+ tons of benzene were used in the US in 2021 (industry consumption figure), relevant because benzene is a well-established carcinogen and a common petrochemical feedstock byproduct
03
7,900+ facilities reported hazardous air pollutants under the US National Emissions Inventory approach for 2022 (facility count across HAP reporting), indicating the scale of air toxics infrastructure near industrial corridors
Interpretation
Industrial Emissions Interpretation
Industrial Emissions pressures in Cancer Alley look especially severe because 7,900 plus facilities reported hazardous air pollutants in 2022 while US petroleum and natural gas systems emitted 8.6 billion kilograms of CO2 that same year and benzene use topped 1,100 plus tons in 2021.
09 · Category
Investment & Capacity5 stats
01
$11.3 billion of US chemical sector capex was planned for 2023 (Gulf Coast portion included in the same capex universe), reflecting investment scale that can drive emission growth absent controls
02
58% of US announced chemical plant expansions for 2023–2025 were located in Gulf Coast states (regional share of announced capacity), indicating geographic concentration of future chemical operations
03
2,800+ new or expanded petrochemical projects were tracked globally with a subset in North America by mid-2024, illustrating continued industrial capacity buildout that can affect local air toxics burdens
04
16.0 million barrels per day of US crude oil refinery inputs were averaged in 2023 (operational throughput), supporting scale of refining activity that correlates with emissions and byproducts
05
6.6 million barrels per day of crude oil were processed by Gulf Coast refineries in 2023 (regional refinery throughput), reflecting the operational intensity of the corridor
Interpretation
Investment & Capacity Interpretation
Planned $11.3 billion in 2023 US chemical capex alongside the fact that 58% of announced plant expansions for 2023 to 2025 are in Gulf Coast states shows that investment and capacity growth are heavily concentrated there, likely sustaining pressure for increased industrial emissions and associated air toxics burdens.
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Rachel Svensson. (2026, February 13). Cancer Alley Statistics. Gitnux. https://gitnux.org/cancer-alley-statistics
MLA
Rachel Svensson. "Cancer Alley Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/cancer-alley-statistics.
Chicago
Rachel Svensson. 2026. "Cancer Alley Statistics." Gitnux. https://gitnux.org/cancer-alley-statistics.
Sources & references
52 datasets cited across this report · attribution is report-level
+31 additional datasets cited (not shown individually)