Clean Water Act discharge permit · NPDES IL0025267
STOCKTON WWTF, VILLAGE OF, Stockton, IL: NPDES IL0025267 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
STOCKTON WWTF, VILLAGE OF, held by STOCKTON, VILLAGE OF, holds NPDES permit IL0025267, which discharges to Mud Run Creek. EPA’s file records it issued July 15, 2020 and expiring July 31, 2025. 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 | STOCKTON WWTF, VILLAGE OF |
|---|---|
| Permittee as filed | STOCKTON, VILLAGE OF |
| NPDES ID | IL0025267 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 15, 2020 |
| Expiration date | July 31, 2025 |
| Address | Stockton, IL 61085 |
| Receiving water | MUD RUN CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mud Run-South Fork Apple River (HUC 070600050501) |
| 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
- 30Pollutants on file
- 12Under a numeric limit
- 29With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 109 | 102 | December 31, 2022 | 7,358% over the limit |
| Nitrogen, ammonia total [as N] | 18 | 85 | 77 | December 31, 2014 | 2,678% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 60 | 51 | April 30, 2019 | 554% over the limit |
| Oxygen, dissolved [DO] | 5 | 17 | 14 | October 31, 2018 | 100% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 8 | 0 | ||
| pH | 2 | 5 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 2 | 0 | ||
| Coliform, fecal general | 2 | 2 | 0 | ||
| Chlorine, total residual | 1 | 2 | 0 | ||
| Phosphorus, total [as P] | 2 | 1 | 0 | ||
| Nitrogen, total [as N] | 1 | 1 | 0 | ||
| Cyanide, total [as CN] | 0 | 1 | 0 | ||
| Arsenic, total [as As] | 0 | 1 | 0 | ||
| Barium, total [as Ba] | 0 | 1 | 0 | ||
| Beryllium, total [as Be] | 0 | 1 | 0 | ||
| Cadmium, total [as Cd] | 0 | 1 | 0 | ||
| Chromium, total [as Cr] | 0 | 1 | 0 | ||
| Copper, total [as Cu] | 0 | 1 | 0 | ||
| Iron, total [as Fe] | 0 | 1 | 0 | ||
| Lead, total [as Pb] | 0 | 1 | 0 | ||
| Manganese, total [as Mn] | 0 | 1 | 0 | ||
| Thallium, total [as Tl] | 0 | 1 | 0 | ||
| Nickel, total [as Ni] | 0 | 1 | 0 | ||
| Silver, total [as Ag] | 0 | 1 | 0 | ||
| Zinc, total [as Zn] | 0 | 1 | 0 | ||
| Antimony, total [as Sb] | 0 | 1 | 0 | ||
| Selenium, total [as Se] | 0 | 1 | 0 | ||
| Phenolics, total recoverable | 0 | 1 | 0 | ||
| Mercury, total [as Hg] | 0 | 1 | 0 | ||
| Flow | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0025267.
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 IL0025267 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.