Clean Water Act discharge permit · NPDES ILG640044
HIGHLAND WTP, Highland, IL: NPDES ILG640044 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
HIGHLAND WTP, held by HIGHLAND, CITY OF, holds NPDES permit ILG640044, which discharges to Silver Lake. EPA’s file records it issued May 30, 2012 and expiring April 30, 2017. 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 WTP |
|---|---|
| Permittee as filed | HIGHLAND, CITY OF |
| NPDES ID | ILG640044 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 30, 2012 |
| Expiration date | April 30, 2017 |
| Address | Highland, IL 62249 |
| Receiving water | SILVER LAKE |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Highland Silver Lake-East Fork Silver Creek (HUC 071402040402) |
| SIC | 4941 – Water Supply |
| Other EPA IDs (FRS) | RCRA handler ILR000126748 |
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
- 4Pollutants on file
- 4Under a numeric limit
- 4With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| pH | 4 | 84 | 20 | August 31, 2025 | |
| Solids, total suspended | 4 | 82 | 18 | May 31, 2024 | 127% over the limit |
| Chlorine, total residual | 2 | 37 | 5 | July 31, 1995 | 60% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 64 | 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 ILG640044.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, ILG640044.
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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 ILG640044 there.
Nearby on the register
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- Every permit record in Illinois, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.