Clean Water Act discharge permit · NPDES IL0031861
WOODSTOCK - NORTH STP, CITY OF, Woodstock, IL: NPDES IL0031861 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 36Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
WOODSTOCK - NORTH STP, CITY OF, held by WOODSTOCK, CITY OF, holds NPDES permit IL0031861, which discharges to Silver Creek. EPA’s file records it issued October 31, 2014 and expiring October 31, 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 | WOODSTOCK - NORTH STP, CITY OF |
|---|---|
| Permittee as filed | WOODSTOCK, CITY OF |
| NPDES ID | IL0031861 |
| 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 | October 31, 2014 |
| Expiration date | October 31, 2019 |
| Address | Woodstock, IL 60098 |
| Receiving water | SILVER CREEK |
| Subwatershed | City of Woodstock (HUC 071200060902) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler ILR000021030; ICIS-AIR source IL000111095AFO |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 37Pollutants on file
- 36Under a numeric limit
- 11With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| Copper, dry weight | 0 | 6 | 6 | December 31, 2010 | 40% over the limit |
| Solids, total suspended | 5 | 3 | 3 | January 31, 2026 | 42% over the limit |
| Copper, total [as Cu] | 1 | 3 | 2 | February 28, 2003 | 397% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 1 | 1 | August 31, 2003 | 61% over the limit |
| Coliform, fecal general | 1 | 1 | 1 | October 31, 2001 | 190% over the limit |
| Oil & Grease | 1 | 1 | 0 | ||
| Fluoride, total [as F] | 1 | 1 | 0 | ||
| Cadmium, total [as Cd] | 1 | 1 | 0 | ||
| Iron, total [as Fe] | 1 | 1 | 0 | ||
| Zinc, total [as Zn] | 1 | 1 | 0 | ||
| Mercury, total [as Hg] | 1 | 1 | 0 | ||
| Oxygen, dissolved [DO] | 5 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 0 | 0 | ||
| Alkalinity, total [as CaCO3] | 1 | 0 | 0 | ||
| Nitrogen, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Phosphorus, dissolved | 1 | 0 | 0 | ||
| Cyanide, weak acid, dissociable | 1 | 0 | 0 | ||
| Cyanide, total [as CN] | 1 | 0 | 0 | ||
| Arsenic, total [as As] | 1 | 0 | 0 | ||
| Barium, total [as Ba] | 1 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 0 | 0 | ||
| Chromium, total [as Cr] | 1 | 0 | 0 | ||
| Iron, dissolved [as Fe] | 1 | 0 | 0 | ||
| Lead, total [as Pb] | 1 | 0 | 0 | ||
| Manganese, total [as Mn] | 1 | 0 | 0 | ||
| Nickel, total [as Ni] | 1 | 0 | 0 | ||
| Silver, total [as Ag] | 1 | 0 | 0 | ||
| Selenium, total [as Se] | 1 | 0 | 0 | ||
| Phenolics, total recoverable | 1 | 0 | 0 | ||
| Nitrogen, Kjeldahl 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0031861.
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.
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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 IL0031861 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.