Clean Water Act discharge permit · NPDES IL0059757
COLONA - GREEN ROCK REGIONAL STP, Colona, IL: NPDES IL0059757 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 30Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
COLONA - GREEN ROCK REGIONAL STP, held by COLONA, CITY OF, holds NPDES permit IL0059757, which discharges to Green River. EPA’s file records it issued May 12, 2015 and expiring May 31, 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 | COLONA - GREEN ROCK REGIONAL STP |
|---|---|
| Permittee as filed | COLONA, CITY OF |
| NPDES ID | IL0059757 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 12, 2015 |
| Expiration date | May 31, 2020 |
| Address | Colona, IL 61241 |
| Receiving water | GREEN RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Green River (HUC 070900070604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 30Under a numeric limit
- 32With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 16 | 121 | 37 | December 31, 2024 | 1,341% over the limit |
| Coliform, fecal general | 1 | 13 | 7 | June 30, 2026 | 575% over the limit |
| Copper, total [as Cu] | 3 | 10 | 4 | May 31, 2026 | 130% over the limit |
| Chlorine, total residual | 2 | 17 | 1 | September 30, 2005 | 4% over the limit |
| Solids, total suspended | 5 | 75 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 68 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 60 | 0 | ||
| Zinc, total [as Zn] | 4 | 32 | 0 | ||
| pH | 2 | 30 | 0 | ||
| Nitrogen, total [as N] | 1 | 17 | 0 | ||
| Phosphorus, total [as P] | 1 | 17 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 15 | 0 | ||
| Cyanide, total [as CN] | 2 | 5 | 0 | ||
| Oil & Grease | 2 | 4 | 0 | ||
| Cyanide, weak acid, dissociable | 2 | 4 | 0 | ||
| Fluoride, total [as F] | 2 | 4 | 0 | ||
| Arsenic, total [as As] | 2 | 4 | 0 | ||
| Barium, total [as Ba] | 2 | 4 | 0 | ||
| Cadmium, total [as Cd] | 2 | 4 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 4 | 0 | ||
| Chromium, total [as Cr] | 2 | 4 | 0 | ||
| Iron, total [as Fe] | 2 | 4 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 4 | 0 | ||
| Lead, total [as Pb] | 2 | 4 | 0 | ||
| Manganese, total [as Mn] | 2 | 4 | 0 | ||
| Nickel, total [as Ni] | 2 | 4 | 0 | ||
| Silver, total [as Ag] | 2 | 4 | 0 | ||
| Selenium, total [as Se] | 2 | 4 | 0 | ||
| Phenolics, total recoverable | 2 | 4 | 0 | ||
| Mercury, total [as Hg] | 2 | 4 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 1 | 0 | ||
| Phenols | 0 | 1 | 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 IL0059757.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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, IL0059757.
Start the watch
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How we handle your data → Privacy
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 IL0059757 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.