Clean Water Act discharge permit · NPDES IL0028347
DEERFIELD WRF, Deerfield, IL: NPDES IL0028347 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
DEERFIELD WRF, held by DEERFIELD, VILLAGE OF, holds NPDES permit IL0028347, which discharges to West Fork North Branch Chicago River. EPA’s file records it issued November 8, 2010 and expiring November 30, 2015. 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 | DEERFIELD WRF |
|---|---|
| Permittee as filed | DEERFIELD, VILLAGE OF |
| NPDES ID | IL0028347 |
| 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 | November 8, 2010 |
| Expiration date | November 30, 2015 |
| Address | Deerfield, IL 60015 |
| Receiving water | WEST FORK NORTH BRANCH CHICAGO RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Upper North Branch Chicago River (HUC 071200030102) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 33Pollutants on file
- 32Under a numeric limit
- 33With a violation of any kind
- 12With 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 | 30 | 80 | 55 | April 30, 2026 | 413% over the limit |
| Coliform, fecal general | 14 | 63 | 46 | April 30, 2026 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 120 | 26 | 13 | June 30, 2021 | 222% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 14 | 6 | February 28, 2017 | 53% over the limit |
| Fluoride, total [as F] | 6 | 8 | 3 | April 30, 2014 | 28% over the limit |
| BOD, 5-day, 20 deg. C | 22 | 19 | 2 | December 31, 2002 | 30% over the limit |
| Chlorine, total residual | 22 | 19 | 2 | January 31, 2026 | 193% over the limit |
| Silver, total [as Ag] | 6 | 6 | 2 | May 31, 2019 | 33% over the limit |
| Oxygen, dissolved [DO] | 18 | 10 | 1 | May 31, 2007 | 10% over the limit |
| Phosphorus, total [as P] | 10 | 6 | 1 | October 31, 2024 | 5% over the limit |
| Phenolics, total recoverable | 6 | 6 | 1 | December 31, 2016 | 20% over the limit |
| Copper, dry weight | 0 | 1 | 1 | September 30, 2008 | 27% over the limit |
| Copper, total [as Cu] | 10 | 61 | 0 | ||
| pH | 28 | 32 | 0 | ||
| Mercury, total [as Hg] | 6 | 28 | 0 | ||
| Flow, in conduit or thru treatment plant | 12 | 10 | 0 | ||
| Flow, total | 8 | 10 | 0 | ||
| Nitrogen, total [as N] | 2 | 2 | 0 | ||
| Selenium, total [as Se] | 2 | 2 | 0 | ||
| Oil & Grease | 2 | 1 | 0 | ||
| Cyanide, weak acid, dissociable | 2 | 1 | 0 | ||
| Cyanide, total [as CN] | 2 | 1 | 0 | ||
| Arsenic, total [as As] | 2 | 1 | 0 | ||
| Barium, total [as Ba] | 2 | 1 | 0 | ||
| Cadmium, total [as Cd] | 2 | 1 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 1 | 0 | ||
| Chromium, total [as Cr] | 2 | 1 | 0 | ||
| Iron, total [as Fe] | 2 | 1 | 0 | ||
| Iron, dissolved [as Fe] | 2 | 1 | 0 | ||
| Lead, total [as Pb] | 2 | 1 | 0 | ||
| Manganese, total [as Mn] | 2 | 1 | 0 | ||
| Nickel, total [as Ni] | 2 | 1 | 0 | ||
| Zinc, total [as Zn] | 2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 18, 2025 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | ST6 |
| February 14, 2025 | Dry-weather SSO 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.
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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 IL0028347 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.