Clean Water Act discharge permit · NPDES IL0023248
MURPHYSBORO STP, CITY OF, Murphysboro, IL: NPDES IL0023248 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
MURPHYSBORO STP, CITY OF, held by MURPHYSBORO, CITY OF, holds NPDES permit IL0023248, which discharges to Big Muddy River. EPA’s file records it issued September 30, 2014 and expiring September 30, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MURPHYSBORO STP, CITY OF |
|---|---|
| Permittee as filed | MURPHYSBORO, CITY OF |
| NPDES ID | IL0023248 |
| 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 | September 30, 2014 |
| Expiration date | September 30, 2019 |
| Address | Murphysboro, IL 62966 |
| Receiving water | BIG MUDDY RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mud Creek-Big Muddy River (HUC 071401061201) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 32Pollutants on file
- 32Under a numeric limit
- 30With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 4 | 9 | 8 | October 31, 2016 | 16,400% over the limit |
| Phosphorus, total [as P] | 10 | 8 | 6 | March 31, 2017 | 500% over the limit |
| Chlorine, total residual | 7 | 6 | 4 | October 31, 2011 | 100% over the limit |
| Solids, total suspended | 27 | 11 | 3 | February 28, 2025 | 57% over the limit |
| Nitrogen, ammonia total [as N] | 58 | 7 | 1 | October 31, 2016 | 140% over the limit |
| pH | 8 | 3 | 1 | October 31, 2011 | |
| BOD, carbonaceous [5 day, 20 C] | 24 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 15 | 3 | 0 | ||
| Mercury, total [as Hg] | 13 | 3 | 0 | ||
| Flow, in conduit or thru treatment plant | 8 | 2 | 0 | ||
| Copper, total [as Cu] | 1 | 2 | 0 | ||
| Iron, dissolved [as Fe] | 1 | 2 | 0 | ||
| Nitrogen, total [as N] | 3 | 1 | 0 | ||
| Oil & Grease | 1 | 1 | 0 | ||
| Cyanide, weak acid, dissociable | 1 | 1 | 0 | ||
| Cyanide, total [as CN] | 1 | 1 | 0 | ||
| Fluoride, total [as F] | 1 | 1 | 0 | ||
| Arsenic, total [as As] | 1 | 1 | 0 | ||
| Barium, total [as Ba] | 1 | 1 | 0 | ||
| Cadmium, total [as Cd] | 1 | 1 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 1 | 0 | ||
| Chromium, total [as Cr] | 1 | 1 | 0 | ||
| Iron, total [as Fe] | 1 | 1 | 0 | ||
| Lead, total [as Pb] | 1 | 1 | 0 | ||
| Manganese, total [as Mn] | 1 | 1 | 0 | ||
| Nickel, total [as Ni] | 1 | 1 | 0 | ||
| Silver, total [as Ag] | 1 | 1 | 0 | ||
| Zinc, total [as Zn] | 1 | 1 | 0 | ||
| Selenium, total [as Se] | 1 | 1 | 0 | ||
| Phenolics, total recoverable | 1 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 0 | 0 | ||
| Flow, total | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 5, 2025 | Wet-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| January 13, 2025 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
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
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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 IL0023248 there.
Nearby on the register
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.