City of Highland
Sewer operator · Illinois · Highland
Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.
Ringed dots mark treatment plant outfalls.
- Federal wastewater discharge permit (NPDES)
- IL0029173
- Wastewater outlets
- 3 treatment plant outfalls listed by EPA or state agencies; no combined sewer outfall is listed · List
- Waters listed as receiving wastewater
- SEWER CREEK
- Tracked waters
- none
- Discharge records counted
- 2 records · latest
- Total reported volume in these records
- 2,094,000 gallons across the 2 records that give a volume
These totals reflect the records we track. Missing volumes and gaps in reporting limit comparisons between operators.
Sources: EPA ECHO and the operator and state sources linked below. Counts use the discharge records on this page. Updated 2026-11-06 09:03 UTC.
Public notices and alerts
We do not list an alert service for this operator yet. Check its website.
Source: City of Highland's public notice and alert pages and the state's notification records.
Report a missing notice or error
Wastewater outlets
Outfall: a pipe or outlet where wastewater enters a water body.
3 treatment plant outfalls listed by EPA or state agencies; no combined sewer outfall is listed.
Treatment plant outfalls
3 outfalls
- Outfall 001 · receiving water in the permit: SEWER CREEK · no water record yet · status not published
- Outfall A01 · receiving water in the permit: SEWER CREEK · no water record yet · status not published
- Outfall B01 · receiving water in the permit: SEWER CREEK · no water record yet · status not published
Source: U.S. Environmental Protection Agency (EPA) permit records (ICIS-NPDES permitted features): where a treatment plant’s permitted discharge leaves. No national source says whether a plant outfall is open or closed.
Reports and advisories
Treatment bypass: wastewater skips one or more treatment steps.
| When | Report | Status |
|---|---|---|
| to Apr 6 ’25, 2:00 AM CDT | “Sewer Creek” · Bypass · 624,000 gallons report · notice · map | ended |
| to 12:00 PM CDT | “Sewer Creek” · Bypass · 1.47 million gallons report · notice · map | ended |
Sources: EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators), retrieved 2026-11-06 08:38 UTC. A report's record id and times show when you hover or focus its "report" link.
All reports in Illinois by year: 2025 (2 from City of Highland)
Reported discharges over time
Historical charts are not available here. See the reports and sources on this page.