Downers Grove Sanitary District
Sewer operator · Illinois · Downers Grove
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).
- Federal wastewater discharge permit (NPDES)
- IL0028380
- Wastewater outlets
- 6 treatment plant outfalls listed by EPA or state agencies; 5 places named in its own overflow reports (provisional locations) · List
- Waters listed as receiving wastewater
- EAST EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK; EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK
- Tracked waters
- East Branch Du Page River, IL, Saint Joseph Creek, IL
- Discharge records counted
- 7 records · latest
- Total reported volume in these records
- 23,270 gallons across the 7 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: Downers Grove Sanitary District'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.
6 treatment plant outfalls listed by EPA or state agencies; 5 places named in its own overflow reports (provisional locations).
Treatment plant outfalls
6 outfalls
- Outfall 001 · receiving water in the permit: EAST EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK · East Branch Du Page River, IL · status not published
- Outfall 002 · receiving water in the permit: EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK · Saint Joseph Creek, IL · status not published
- Outfall 003 · receiving water in the permit: EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK · Saint Joseph Creek, IL · status not published
- Outfall A01 · receiving water in the permit: EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK · East Branch Du Page River, IL · status not published
- Outfall B01 · receiving water in the permit: EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK · East Branch Du Page River, IL · status not published
- Outfall C01 · receiving water in the permit: EAST BRANCH OF DUPAGE RIVER & ST JOSEPH CREEK · Saint Joseph Creek, 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)
5 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 · 2 overflow reports, latest Aug 1, 2026 · confidence high · no water record yet
- Reported place · 2 overflow reports, latest Mar 16, 2026 · confidence high · no water record yet
- Reported place · 1 overflow report, latest Aug 1, 2026 · confidence medium · no water record yet
- Reported place · 1 overflow report, latest Jun 3, 2026 · confidence medium · no water record yet
- Reported place · 1 overflow report, latest Aug 19, 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
Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.
| When | Report | Status |
|---|---|---|
| to 4:00 PM CDT | “A tributary to the East Branch of the DuPage River” · SSO · 3,600 gallons report · notice · map | ended |
| to 7:00 AM CDT | “A tributary to the East Branch of the DuPage River” · SSO · 120 gallons report · notice · map | ended |
| to 3:29 PM CDT | “Drainage ditch tributary to Lyman Woods pond” · SSO · 4,800 gallons report · notice · map | ended |
| to 5:00 AM CDT | Saint Joseph Creek · SSO · 3,000 gallons report · notice · map | ended |
| to 8:15 AM CDT | “tributary to East Branch of DuPage River” · SSO · 2,730 gallons report · notice · map | ended |
| to 7:50 AM CDT | “Tributary to the East Branch of the DuPage River” · SSO · 4,520 gallons report · notice · map | ended |
| to Aug 19 ’25, 7:15 AM CDT | Saint Joseph Creek · SSO · 4,500 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 (4 from Downers Grove Sanitary District) · 2025 (3 from Downers Grove Sanitary District)
Other sewer operators on these waters
- East Branch Du Page River, IL: Dupage County Department Of Public Works, Glenbard Wastewater Authority, Glenbard Wastewater Authority, Village of Bloomingdale, Village of Bolingbrook, Village of Glendale Heights
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.