Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) at Exxonmobil Oil Corp Joliet Refinery have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Exxonmobil Oil Corp Joliet Refinery
Total reported releases 1.0M lb fell meaningfully year over year (-29%). Total releases concentrations are up 75% since 2010.
25915 S FRONTAGE RD, Channahon, Illinois · 324110 · Petroleum · operated by Exxon Mobil CORP
Anomaly engine
Notable Signals
Total reported releases
Total reported releases at Exxonmobil Oil Corp Joliet Refinery have risen 75% since 2010 (through 2024).
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) releases at Exxonmobil Oil Corp Joliet Refinery fell from 673k lb to 290k lb (57% lower) between 2023 and 2024.
Chemicals reported · most recent year
What This Facility Releases
Nitrate compounds (water dissociable; reportable only when in aqueous solution)
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than doubled since 2010.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations are roughly unchanged from 2010.
Ammonia
Ammonia concentrations have more than doubled since 2010.
Xylene (mixed isomers)
Xylene (mixed isomers) concentrations have more than doubled since 2010.
Hydrogen sulfide
Hydrogen sulfide concentrations have fallen 41% since 2012.
Toluene
Toluene concentrations are up 80% since 2010.
Carbon disulfide
Carbon disulfide concentrations have more than doubled since 2010.
Hydrogen fluoride
Hydrogen fluoride concentrations are up 50% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (5 Census block groups, population-weighted demographics): a population of 9,185. Why we surface this →
10.0%
Low-income
8.9%
People of color
5.1%
Under age 5
15.9%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.