Clean Water Act discharge permit · NPDES IL0045012
CHICAGO CSO, CITY OF, Chicago, IL: NPDES IL0045012 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
CHICAGO CSO, CITY OF, held by CHICAGO CSOS, holds NPDES permit IL0045012, which discharges to North Shore Channel. EPA’s file records it issued May 31, 2002 and expiring May 31, 2007. 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 | CHICAGO CSO, CITY OF |
|---|---|
| Permittee as filed | CHICAGO CSOS |
| NPDES ID | IL0045012 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Combined sewer overflows |
| Issued | May 31, 2002 |
| Expiration date | May 31, 2007 |
| Address | Chicago, IL 60604 |
| Receiving water | NORTH SHORE CHANNEL |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | North Shore Channel (HUC 071200030104) |
| Other EPA IDs (FRS) | RCRA handler ILD980997365 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| pH | 6 | 522 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 265 | 0 | ||
| Solids, total suspended | 3 | 262 | 0 | ||
| Flow, total | 3 | 255 | 0 | ||
| Flow | 231 | 253 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES IL0045012.
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 IL0045012.
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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IL0045012.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IL0045012 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.