Clean Water Act discharge permit · NPDES IL0023264
SALEM STP, CITY OF, Salem, IL: NPDES IL0023264 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
SALEM STP, CITY OF, held by SALEM, CITY OF, holds NPDES permit IL0023264, which discharges to Town Creek. EPA’s file records it issued September 29, 2017 and expiring September 30, 2022. 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 | SALEM STP, CITY OF |
|---|---|
| Permittee as filed | SALEM, CITY OF |
| NPDES ID | IL0023264 |
| 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 29, 2017 |
| Expiration date | September 30, 2022 |
| Address | Salem, IL 62881 |
| Receiving water | TOWN CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Town Creek-Crooked Creek (HUC 071402020803) |
| 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
- 33Pollutants on file
- 32Under a numeric limit
- 31With a violation of any kind
- 2With 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] | 50 | 18 | 3 | April 30, 2007 | 227% over the limit |
| Chlorine, total residual | 2 | 81 | 2 | December 31, 2011 | 5% over the limit |
| Coliform, fecal general | 2 | 39 | 0 | ||
| Solids, total suspended | 8 | 16 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 12 | 0 | ||
| pH | 6 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 10 | 0 | ||
| Zinc, total [as Zn] | 1 | 6 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 4 | 0 | ||
| Flow, total | 2 | 2 | 0 | ||
| Oil & Grease | 1 | 2 | 0 | ||
| Nitrogen, total [as N] | 1 | 2 | 0 | ||
| Cyanide, total [as CN] | 1 | 2 | 0 | ||
| Fluoride, total [as F] | 1 | 2 | 0 | ||
| Arsenic, total [as As] | 1 | 2 | 0 | ||
| Barium, total [as Ba] | 1 | 2 | 0 | ||
| Cadmium, total [as Cd] | 1 | 2 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 2 | 0 | ||
| Chromium, total [as Cr] | 1 | 2 | 0 | ||
| Copper, total [as Cu] | 1 | 2 | 0 | ||
| Iron, total [as Fe] | 1 | 2 | 0 | ||
| Iron, dissolved [as Fe] | 1 | 2 | 0 | ||
| Lead, total [as Pb] | 1 | 2 | 0 | ||
| Manganese, total [as Mn] | 1 | 2 | 0 | ||
| Nickel, total [as Ni] | 1 | 2 | 0 | ||
| Silver, total [as Ag] | 1 | 2 | 0 | ||
| Selenium, total [as Se] | 1 | 2 | 0 | ||
| Phenolics, total recoverable | 1 | 2 | 0 | ||
| Mercury, total [as Hg] | 1 | 2 | 0 | ||
| Cyanide, free [amenable to chlorination] | 1 | 1 | 0 | ||
| Cyanide, weak acid, dissociable | 0 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 7 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 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 |
|---|---|---|
| June 3, 2025 | Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| April 4, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | 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 IL0023264 there.
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.