Clean Water Act discharge permit · NPDES IL0002861
EXXONMOBIL OIL CORPORATION, Joliet, IL: NPDES IL0002861 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 39Pollutants under a numeric limit
- 13Pollutants with an effluent exceedance
EXXONMOBIL OIL CORPORATION holds NPDES permit IL0002861, which discharges to Des Plaines River. EPA’s file records it issued May 8, 2015 and expiring April 30, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EXXONMOBIL OIL CORPORATION |
|---|---|
| Permittee as filed | EXXONMOBIL OIL CORPORATION |
| NPDES ID | IL0002861 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 8, 2015 |
| Expiration date | April 30, 2020 |
| Address | Joliet, IL 60410 |
| Receiving water | DES PLAINES RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Jackson Creek (HUC 071200040903) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 39Pollutants on file
- 39Under a numeric limit
- 27With a violation of any kind
- 13With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 83 | 77 | August 31, 2024 | 276% over the limit |
| Temperature, water deg. fahrenheit | 2 | 52 | 49 | July 31, 2026 | 63% over the limit |
| Carbon, tot organic [TOC] | 5 | 40 | 25 | November 30, 2009 | 340% over the limit |
| pH | 14 | 49 | 19 | September 30, 2019 | |
| Nitrogen, ammonia total [as N] | 4 | 22 | 18 | September 30, 2024 | 103% over the limit |
| Oil and grease | 10 | 38 | 17 | January 31, 2026 | 183% over the limit |
| Solids, total dissolved | 1 | 7 | 6 | January 31, 2023 | 22% over the limit |
| Cyanide, total [as CN] | 6 | 8 | 4 | June 30, 2021 | 300% over the limit |
| Chlorine, total residual | 1 | 6 | 2 | May 31, 2002 | 40% over the limit |
| Sulfide, total [as S] | 2 | 4 | 2 | June 30, 2022 | 236% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 5 | 1 | August 31, 2020 | 3% over the limit |
| Fluoride, total [as F] | 4 | 5 | 1 | May 31, 2006 | 27% over the limit |
| Benzene | 1 | 2 | 1 | November 30, 2016 | 9,900% over the limit |
| Flow, in conduit or thru treatment plant | 10 | 17 | 0 | ||
| Chromium, hexavalent [as Cr] | 4 | 4 | 0 | ||
| Chromium, total [as Cr] | 4 | 4 | 0 | ||
| Phenolics, total recoverable | 4 | 4 | 0 | ||
| Iron, total [as Fe] | 4 | 2 | 0 | ||
| Oxygen demand, chem. [high level] [COD] | 2 | 2 | 0 | ||
| Zinc, total [as Zn] | 2 | 2 | 0 | ||
| Phenols | 2 | 2 | 0 | ||
| Sulfate [as S] | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 1 | 1 | 0 | ||
| Phosphorus, total [as P] | 1 | 1 | 0 | ||
| Chloride [as Cl] | 1 | 1 | 0 | ||
| Benzene, ethylbenzene, toluene, xylene combination | 1 | 1 | 0 | ||
| Mercury, total [as Hg] | 1 | 1 | 0 | ||
| Cyanide, weak acid, dissociable | 2 | 0 | 0 | ||
| Arsenic, total [as As] | 2 | 0 | 0 | ||
| Barium, total [as Ba] | 2 | 0 | 0 | ||
| Cadmium, total [as Cd] | 2 | 0 | 0 | ||
| Copper, total [as Cu] | 2 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 0 | 0 | ||
| Lead, total [as Pb] | 2 | 0 | 0 | ||
| Manganese, total [as Mn] | 2 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 2 | 0 | 0 | ||
| Vanadium, total [as V] | 2 | 0 | 0 | ||
| Selenium, total [as Se] | 2 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0002861.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.