Combined sewer overflow (CSO) reported — WOOD RIVER STP, CITY OF, Oct 30, 2026

Ended (as reported) · EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)

Source: EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators), record IL0031852:73:1, reported Nov 2, 2026, 12:00 AM CST, retrieved 2026-11-06 08:38 UTC · Read the original notice

Current status from this report

This report does not set a map status as of Nov 6, 2026, 3:03 AM CST. Check its dates and the status rules.

A report is not a test of the water. See how we assign statuses.

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: WOOD RIVER STP, CITY OF (federal wastewater discharge permit, NPDES, IL0031852). Outlet: A01. Location: 38.85111, -90.10972; location source: given in the source record.

Outfall: a pipe or outlet where wastewater enters a water body.

Source: EPA ECHO wastewater outlet records, permit IL0031852, outlet A01. Location linked by DirtyWaterWatch.

2. Waters named in the notice

The notice names: “Mississippi River”. DirtyWaterWatch links this report to Mississippi River, IL. Match basis: the outlet's permit and number in EPA and state records.

3. Estimated downstream stretch

No downstream estimate is available for this report.

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.

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When it happened and when it was reported

Event and notice times use Eastern Time (EST or EDT). Retrieval times use Coordinated Universal Time (UTC).

Started: Oct 30, 2026, 1:00 AM CDT
Ended: Oct 30, 2026, 2:00 AM CDT
Detail provided by the source: Times known to the minute
Reported to the source: Nov 2, 2026, 12:00 AM CST
Published: Nov 4, 2026, 12:00 AM CST
Source last updated: Nov 4, 2026, 6:21 AM CST
Last retrieved by DirtyWaterWatch: 2026-11-06 08:38 UTC

What and how much

Type: Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.
Status in the record: Ended (as reported)
Material: “combined sewage and stormwater”
Volume: 742,000 gallons (measured or verified)
Volume as reported: “742,000 gallons (Automated Remote Monitoring)”

Advice from EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)

This report includes no advice. Check current local health notices.

Advice period: This report does not state a period. See the rule DirtyWaterWatch applies and its source.
Basis: not stated

Status history from this report

Discharge or advisory reported Mississippi River: Discharge reported ongoing, Oct 30, 2026, 1:00 AM CDT to Oct 30, 2026, 2:00 AM CDT
Caution Mississippi River: Within the caution period after the reported end, Oct 30, 2026, 2:00 AM CDT to Nov 2, 2026, 1:00 AM CST

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-06 09:03 UTC.

Source and versions

Source: Public source
Source record number: IL0031852:73:1
Original notice: Read the original notice
Earlier version: None: this is the first record
Later versions: None

Record details

Record details
Record identifier	echo-sewer-overflow:IL0031852:73:1
Source identifier	echo-sewer-overflow
Source record number	IL0031852:73:1
Earlier version	Not provided
Type	Combined sewer overflow (CSO)
Status in the report	Ended (as reported)
Sewer operator identifier	il-wood-river-stp-city-of
Sewer operator	WOOD RIVER STP, CITY OF
Federal wastewater discharge permit (NPDES)	IL0031852
Outlet number	A01
Outlet name	Not provided
Water named in the report	Mississippi River
Linked waters	mississippi-river-il
How this report was linked to the water	the outlet's permit and number in EPA and state records
Latitude	38.851
Longitude	-90.11
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Oct 30, 2026, 1:00 AM CDT (2026-10-30T01:00:00-05:00)
Ended	Oct 30, 2026, 2:00 AM CDT (2026-10-30T02:00:00-05:00)
Detail provided by the source	to the minute
Reported to the source	Nov 2, 2026, 12:00 AM CST (2026-11-02)
Published	Nov 4, 2026, 12:00 AM CST (2026-11-04)
Source last updated	Nov 4, 2026, 6:21 AM CST (2026-11-04T12:21:15Z)
Last retrieved by DirtyWaterWatch	Nov 6, 2026, 2:38 AM CST (2026-11-06T08:38:59Z)
Material	combined sewage and stormwater
Volume, in gallons	742,000
Volume as reported	742,000 gallons (Automated Remote Monitoring)
How volume was determined	measured or verified
Authority	EPA ECHO Sewer Overflow and Bypass Event report (reported to regulators)
Advice	Not provided
Advice period, in hours	Not provided
Basis of the advice period	Not provided
Original notice	https://echo.epa.gov/detailed-facility-report?fid=IL0031852&sys=ICP

Original source data

{
  "permit_identifier": "IL0031852",
  "program_report_form_set_id": "73",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_key": "28097",
  "sewer_overflow_bypass_event_id_ext": "1",
  "sewer_overflow_bypass_reporting_requirement_code": "3",
  "sewer_overflow_reporting_requirement_desc": "Wet-weather CSO reporting requirement not related to noncompliance reporting",
  "wet_weather_occurance_indicator": "Y",
  "sewer_overflow_structure_type_code": "CSO",
  "sewer_overflow_structure_type_desc": "CSO Outfall",
  "collection_system_identifier": "001",
  "permitted_feature_identifier": "A01",
  "latitude_measure": "38.851111",
  "longitude_measure": "-90.109722",
  "sewer_overflow_bypass_duration_hours": "1.00",
  "sewer_overflow_bypass_start_datetime": "2026-10-30 01:00:00",
  "sewer_overflow_bypass_end_datetime": "2026-10-30 02:00:00",
  "discharge_quantification_method_code": "ARM",
  "discharge_quantification_method_desc": "Automated Remote Monitoring",
  "sewer_overflow_bypass_discharge_volume_gallons": "742000.00",
  "payload_id": "324344605",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-11-02",
  "program_report_start_date": "2026-10-29",
  "program_report_end_date": "2026-10-29",
  "electronic_submission_type_code": "ES1",
  "electr_submission_type_desc": "EPA electronic reporting system",
  "program_report_npdes_data_group_number_code": "G9A",
  "transaction_type": "N",
  "collection_system_owner_type_code": "CTG",
  "collection_system_owner_type_desc": "Municipality",
  "collection_system_population": "10464",
  "types": [
    "Combined Sewer Overflow Event"
  ],
  "receiving_waters": [
    "Mississippi River"
  ],
  "impacts": [
    {
      "code": "NOI",
      "desc": "No observable impacts",
      "other": null
    }
  ],
  "causes": [
    {
      "code": "HLI",
      "desc": "High Levels of Inflow and/or Infiltration",
      "other": null
    }
  ],
  "corrective_actions": [
    {
      "code": "SEP",
      "desc": "Sewer Separation",
      "other": null
    }
  ],
  "treatment": [],
  "collection_system_name": "WOOD RIVER, CITY OF SSCS",
  "percent_collection_system_css": "50",
  "reached_water_rule": "receiving water named",
  "timezone_note": "ECHO gives event times without a timezone; read as America/Chicago, the permit's state's zone (a fall-back hour that happens twice is read as the first)",
  "report_version": "1"
}

Staff names, email addresses and phone numbers are removed from source data before it is stored.