Combined sewer overflow (CSO) reported — BELLEVILLE STP #1, CITY OF, Sep 16, 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 IL0021873:34:1, reported Sep 16, 2026, 12:00 AM CDT, 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.

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1. Reported wastewater outlet

Operator named in the record: BELLEVILLE STP #1, CITY OF (federal wastewater discharge permit, NPDES, IL0021873). Outlet: not stated. Location: 38.57099, -90.05652; location source: given in the source record.

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

2. Waters named in the notice

The notice names: “Powdermill Creek”. DirtyWaterWatch links this report to Powdermill Creek, IL. Match basis: the water named in the report.

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: Sep 16, 2026, 12:30 AM CDT
Ended: Sep 16, 2026, 1:30 AM CDT
Detail provided by the source: Times known to the minute
Reported to the source: Sep 16, 2026, 12:00 AM CDT
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: 50,000 gallons (estimated)
Volume as reported: “50,000 gallons (Best Professional Judgement)”

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 Powdermill Creek: Discharge reported ongoing, Sep 16, 2026, 12:30 AM CDT to Sep 16, 2026, 1:30 AM CDT
Caution Powdermill Creek: Within the caution period after the reported end, Sep 16, 2026, 1:30 AM CDT to Sep 19, 2026, 1:30 AM CDT

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: IL0021873:34:1
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:IL0021873:34:1
Source identifier	echo-sewer-overflow
Source record number	IL0021873:34:1
Earlier version	Not provided
Type	Combined sewer overflow (CSO)
Status in the report	Ended (as reported)
Sewer operator identifier	il-belleville-stp-1-city-of
Sewer operator	BELLEVILLE STP #1, CITY OF
Federal wastewater discharge permit (NPDES)	IL0021873
Outlet number	Not provided
Outlet name	Not provided
Water named in the report	Powdermill Creek
Linked waters	powdermill-creek-il
How this report was linked to the water	the water named in the report
Latitude	38.571
Longitude	-90.057
Location source	given in the source record
Location accuracy, in metres	Not provided
Started	Sep 16, 2026, 12:30 AM CDT (2026-09-16T00:30:00-05:00)
Ended	Sep 16, 2026, 1:30 AM CDT (2026-09-16T01:30:00-05:00)
Detail provided by the source	to the minute
Reported to the source	Sep 16, 2026, 12:00 AM CDT (2026-09-16)
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	50,000
Volume as reported	50,000 gallons (Best Professional Judgement)
How volume was determined	estimated
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=IL0021873&sys=ICP

Original source data

{
  "permit_identifier": "IL0021873",
  "program_report_form_set_id": "34",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_key": "27432",
  "sewer_overflow_bypass_event_id_ext": "1",
  "sewer_overflow_bypass_description_text": "88th Street Lift Station",
  "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": "PUM",
  "sewer_overflow_structure_type_desc": "Pumping Station",
  "collection_system_identifier": "001",
  "latitude_measure": "38.570985",
  "longitude_measure": "-90.056517",
  "sewer_overflow_bypass_duration_hours": "1.00",
  "sewer_overflow_bypass_start_datetime": "2026-09-16 00:30:00",
  "sewer_overflow_bypass_end_datetime": "2026-09-16 01:30:00",
  "discharge_quantification_method_code": "BPJ",
  "discharge_quantification_method_desc": "Best Professional Judgement",
  "sewer_overflow_bypass_discharge_volume_gallons": "50000.00",
  "payload_id": "319887308",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-09-16",
  "program_report_start_date": "2026-09-15",
  "program_report_end_date": "2026-09-15",
  "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": "42404",
  "types": [
    "Combined Sewer Overflow Event"
  ],
  "receiving_waters": [
    "Powdermill Creek"
  ],
  "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": "FLU",
      "desc": "Sewer Flushing, Rodding, Blockage/Debris Removal",
      "other": null
    }
  ],
  "treatment": [],
  "collection_system_name": "BELLEVILLE STP #1, 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.