Combined sewer overflow (CSO) reported — BELLEVILLE STP #1, CITY OF, Sep 10, 2026

Record details

Original source data

{
  "permit_identifier": "IL0021873",
  "program_report_form_set_id": "33",
  "program_report_form_id": "2",
  "sewer_overflow_bypass_event_key": "27407",
  "sewer_overflow_bypass_event_id_ext": "1",
  "sewer_overflow_bypass_description_text": "Lagoon Discharge",
  "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": "038",
  "latitude_measure": "38.497778",
  "longitude_measure": "-89.976944",
  "sewer_overflow_bypass_duration_hours": "36.50",
  "sewer_overflow_bypass_start_datetime": "2026-09-10 07:00:00",
  "sewer_overflow_bypass_end_datetime": "2026-09-11 19:30:00",
  "discharge_quantification_method_code": "ARM",
  "discharge_quantification_method_desc": "Automated Remote Monitoring",
  "sewer_overflow_bypass_discharge_volume_gallons": "72340000.00",
  "payload_id": "319470852",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-09-14",
  "program_report_start_date": "2026-09-10",
  "program_report_end_date": "2026-09-10",
  "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": [
    "Richland 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": "DIS",
      "desc": "Disinfection Treatment of Sewer Overflow or Bypass",
      "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": "2"
}

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