Clean Water Act discharge permit · NPDES IL0071366
LCDPW - MILL CREEK WRF, Old Mill Creek, IL: NPDES IL0071366 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 37Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
LCDPW - MILL CREEK WRF, held by LAKE COUNTY DEPARTMENT OF PUBLIC WORKS, holds NPDES permit IL0071366, which discharges to Mill Creek. EPA’s file records it issued April 30, 2015 and expiring April 30, 2020. 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 | LCDPW - MILL CREEK WRF |
|---|---|
| Permittee as filed | LAKE COUNTY DEPARTMENT OF PUBLIC WORKS |
| NPDES ID | IL0071366 |
| 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 | April 30, 2015 |
| Expiration date | April 30, 2020 |
| Address | Old Mill Creek, IL 60083 |
| Receiving water | MILL CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mill Creek (HUC 071200040202) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 38Pollutants on file
- 37Under a numeric limit
- 31With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 14 | 41 | 5 | April 30, 2025 | 144% over the limit |
| Coliform, fecal general | 1 | 5 | 2 | August 31, 2024 | 613% over the limit |
| Chlorine, total residual | 1 | 10 | 1 | June 30, 2010 | 80% over the limit |
| Copper, total [as Cu] | 3 | 7 | 1 | July 31, 2009 | 12% over the limit |
| Copper, dry weight | 0 | 1 | 1 | December 31, 2010 | 33% over the limit |
| Solids, total suspended | 5 | 85 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 68 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 64 | 0 | ||
| pH | 2 | 34 | 0 | ||
| BOD, 5-day, 20 deg. C | 1 | 17 | 0 | ||
| Lead, total [as Pb] | 3 | 4 | 0 | ||
| Oil & Grease | 3 | 2 | 0 | ||
| Cyanide, weak acid, dissociable | 3 | 2 | 0 | ||
| Cyanide, total [as CN] | 3 | 2 | 0 | ||
| Fluoride, total [as F] | 3 | 2 | 0 | ||
| Arsenic, total [as As] | 3 | 2 | 0 | ||
| Barium, total [as Ba] | 3 | 2 | 0 | ||
| Cadmium, total [as Cd] | 3 | 2 | 0 | ||
| Chromium, hexavalent [as Cr] | 3 | 2 | 0 | ||
| Chromium, total [as Cr] | 3 | 2 | 0 | ||
| Iron, total [as Fe] | 3 | 2 | 0 | ||
| Iron, dissolved [as Fe] | 3 | 2 | 0 | ||
| Manganese, total [as Mn] | 3 | 2 | 0 | ||
| Nickel, total [as Ni] | 3 | 2 | 0 | ||
| Silver, total [as Ag] | 3 | 2 | 0 | ||
| Zinc, total [as Zn] | 3 | 2 | 0 | ||
| Selenium, total [as Se] | 3 | 2 | 0 | ||
| Phenolics, total recoverable | 3 | 2 | 0 | ||
| Mercury, total [as Hg] | 3 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 5 | 1 | 0 | ||
| Phosphorus, total [as P] | 2 | 1 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 0 | 0 | ||
| Specific conductance | 1 | 0 | 0 | ||
| Alkalinity, total [as CaCO3] | 1 | 0 | 0 | ||
| Nitrogen, total [as N] | 1 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Phosphorus, dissolved | 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 IL0071366.
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 IL0071366 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.