Clean Water Act discharge permit · NPDES IL0029173
HIGHLAND STP, CITY OF, Highland, IL: NPDES IL0029173 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 35Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
HIGHLAND STP, CITY OF, held by HIGHLAND, CITY OF, holds NPDES permit IL0029173, which discharges to Sewer Creek. EPA’s file records it issued January 29, 2019 and expiring January 31, 2024. 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 | HIGHLAND STP, CITY OF |
|---|---|
| Permittee as filed | HIGHLAND, CITY OF |
| NPDES ID | IL0029173 |
| 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 | January 29, 2019 |
| Expiration date | January 31, 2024 |
| Address | Highland, IL 62249 |
| Receiving water | SEWER CREEK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Buckeye Branch-Sugar Creek (HUC 071402040102) |
| 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
- 35Pollutants on file
- 35Under a numeric limit
- 35With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Zinc, total [as Zn] | 8 | 13 | 12 | April 30, 2010 | 167% over the limit |
| Nitrogen, ammonia total [as N] | 67 | 19 | 3 | March 31, 2025 | 75% over the limit |
| Copper, total [as Cu] | 8 | 4 | 3 | September 30, 2009 | 13% over the limit |
| Solids, total suspended | 8 | 17 | 2 | December 31, 2008 | 36% over the limit |
| Coliform, fecal general | 2 | 2 | 2 | April 30, 2024 | 625% over the limit |
| Oxygen, dissolved [DO] | 8 | 12 | 1 | August 31, 2007 | 2% over the limit |
| Phosphorus, total [as P] | 3 | 6 | 1 | April 30, 2026 | 36% over the limit |
| Chlorine, total residual | 2 | 4 | 1 | December 31, 2001 | 87% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 12 | 0 | ||
| pH | 4 | 8 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 8 | 0 | ||
| Nitrogen, total [as N] | 1 | 5 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 3 | 0 | ||
| Oil & Grease | 8 | 1 | 0 | ||
| Cyanide, total [as CN] | 8 | 1 | 0 | ||
| Cyanide, free [amenable to chlorination] | 8 | 1 | 0 | ||
| Fluoride, total [as F] | 8 | 1 | 0 | ||
| Arsenic, total [as As] | 8 | 1 | 0 | ||
| Barium, total [as Ba] | 8 | 1 | 0 | ||
| Beryllium, total [as Be] | 8 | 1 | 0 | ||
| Cadmium, total [as Cd] | 8 | 1 | 0 | ||
| Chromium, hexavalent [as Cr] | 8 | 1 | 0 | ||
| Chromium, total [as Cr] | 8 | 1 | 0 | ||
| Iron, total [as Fe] | 8 | 1 | 0 | ||
| Iron, dissolved [as Fe] | 8 | 1 | 0 | ||
| Lead, total [as Pb] | 8 | 1 | 0 | ||
| Manganese, total [as Mn] | 8 | 1 | 0 | ||
| Thallium, total [as Tl] | 8 | 1 | 0 | ||
| Nickel, total [as Ni] | 8 | 1 | 0 | ||
| Silver, total [as Ag] | 8 | 1 | 0 | ||
| Antimony, total [as Sb] | 8 | 1 | 0 | ||
| Selenium, total [as Se] | 8 | 1 | 0 | ||
| Phenolics, total recoverable | 8 | 1 | 0 | ||
| Mercury, total [as Hg] | 8 | 1 | 0 | ||
| Flow, total | 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 |
|---|---|---|
| April 5, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | 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.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.