Sanitary sewer overflow (SSO) reported — DANVILLE SANITARY DISTRICT STP SSCS, Aug 15, 2026

Record details

Original source data

{
  "permit_identifier": "IL0020788",
  "program_report_form_set_id": "2",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_key": "27168",
  "sewer_overflow_bypass_event_id_ext": "2",
  "sewer_overflow_bypass_reporting_requirement_code": "2",
  "sewer_overflow_reporting_requirement_desc": "Other noncompliance reporting",
  "wet_weather_occurance_indicator": "Y",
  "sewer_overflow_structure_type_code": "MAN",
  "sewer_overflow_structure_type_desc": "Manhole",
  "collection_system_identifier": "001",
  "latitude_measure": "40.103574",
  "longitude_measure": "-87.596082",
  "sewer_overflow_bypass_duration_hours": "6.00",
  "sewer_overflow_bypass_start_datetime": "2026-08-15 12:30:00",
  "sewer_overflow_bypass_end_datetime": "2026-08-15 18:30:00",
  "discharge_quantification_method_code": "BPJ",
  "discharge_quantification_method_desc": "Best Professional Judgement",
  "sewer_overflow_bypass_discharge_volume_gallons": "285.00",
  "payload_id": "317320970",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-08-20",
  "program_report_start_date": "2026-08-14",
  "program_report_end_date": "2026-08-17",
  "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": "28472",
  "types": [
    "Sanitary Sewer Overflow Event"
  ],
  "receiving_waters": [
    "Stoney 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": "III",
      "desc": "Implement Inflow and Infiltration Control Program",
      "other": null
    }
  ],
  "treatment": [],
  "collection_system_name": "DANVILLE SANITARY DISTRICT STP SSCS",
  "percent_collection_system_css": "0",
  "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.