City of Mounds
Sewer operator · Illinois · Mounds
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. Small hollow diamonds mark places named in its overflow reports (provisional). Square boat markers mark boat launches listed by OpenBoatLaunch.
- Federal wastewater discharge permit (NPDES)
- ILG582003
- Wastewater outlets
- 1 treatment plant outfall listed by EPA or state agencies; 3 places named in its own overflow reports (provisional locations) · List
- Waters listed as receiving wastewater
- UNNAMED TRIB OF CACHE RIVER
- Tracked waters
- Cache River, IL
- Discharge records counted
- 3 records · latest
- Total reported volume in these records
- 19,302,140 gallons across the 3 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 Mounds'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.
1 treatment plant outfall listed by EPA or state agencies; 3 places named in its own overflow reports (provisional locations).
Treatment plant outfalls
1 outfall
- Outfall 001 · receiving water in the permit: UNNAMED TRIB OF CACHE RIVER · Cache River, IL · 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.
Places named in overflow reports (provisional)
3 places
Provisional location from overflow reports. Where the operator's own reports put an overflow: a manhole, pump station or plant. Not an outfall listed in a permit.
- Reported place · 1 overflow report, latest Jul 11, 2026 · confidence medium · no water record yet
- Reported place · 1 overflow report, latest Mar 5, 2026 · confidence medium · no water record yet
- Reported place · 1 overflow report, latest Apr 5, 2025 · confidence medium · no water record yet
Source: the operator's own overflow reports to the state. DirtyWaterWatch groups reports within 50 metres into one place and finds the water below it with U.S. Geological Survey river maps (NLDI, NHDPlus). Not a permitted outfall; provisional until an official outfall record exists.
Reports and advisories
Treatment bypass: wastewater skips one or more treatment steps. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.
| When | Report | Status |
|---|---|---|
| to Jul 14, 2:00 PM CDT | “unnamed tributary that leads to ohio river” · Bypass · 8.65 million gallons report · notice · map | ended |
| to Mar 10, 3:00 PM CDT | “unnamed tributary that leads to ohio river” · SSO · 7,140 gallons report · notice · map | ended |
| to Apr 16 ’25, 9:15 PM CDT | “unnamed tributary that leads to mississippi river” · SSO · 10.65 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: 2026 (2 from City of Mounds) · 2025 (1 from City of Mounds)
Other sewer operators on these waters
The last 90 days
No discharge, advisory or caution periods are shown for the waters this sewer operator's reports were placed on in this time span. Check downstream stretches and source coverage.
Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-06 09:03 UTC.
Reported discharges over time
Historical charts are not available here. See the reports and sources on this page.