Treatment bypass reported — CARLINVILLE STP, Sep 20, 2026

Record details

Original source data

{
  "permit_identifier": "IL0022675",
  "program_report_form_set_id": "38",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_key": "27477",
  "sewer_overflow_bypass_event_id_ext": "1",
  "sewer_overflow_bypass_description_text": "due to heavy rain by passed at the plant",
  "sewer_overflow_bypass_reporting_requirement_code": "1",
  "sewer_overflow_reporting_requirement_desc": "5-day reporting for noncompliance that may endanger health or the environment",
  "wet_weather_occurance_indicator": "Y",
  "latitude_measure": "39.268333",
  "longitude_measure": "-89.876667",
  "sewer_overflow_bypass_duration_hours": "2.00",
  "sewer_overflow_bypass_start_datetime": "2026-09-20 07:00:00",
  "sewer_overflow_bypass_end_datetime": "2026-09-20 09:00:00",
  "discharge_quantification_method_code": "ARM",
  "discharge_quantification_method_desc": "Automated Remote Monitoring",
  "sewer_overflow_bypass_discharge_volume_gallons": "0.50",
  "payload_id": "320127937",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-09-21",
  "program_report_start_date": "2026-09-20",
  "program_report_end_date": "2026-09-20",
  "electronic_submission_type_code": "ES1",
  "electr_submission_type_desc": "EPA electronic reporting system",
  "program_report_npdes_data_group_number_code": "G9A",
  "transaction_type": "N",
  "types": [
    "Bypass Event"
  ],
  "receiving_waters": [
    "Briar Creek"
  ],
  "impacts": [
    {
      "code": "NOI",
      "desc": "No observable impacts",
      "other": null
    }
  ],
  "causes": [
    {
      "code": "INT",
      "desc": "Inadequate Treatment Plant Capacity - High Levels of Inflow and/or Infiltration",
      "other": null
    }
  ],
  "corrective_actions": [
    {
      "code": "UWC",
      "desc": "Upgrade WWTP Capacity",
      "other": null
    }
  ],
  "treatment": [
    {
      "code": null,
      "desc": null,
      "bypassed_equipment": "Primary treatment equipment"
    }
  ],
  "collection_system_name": null,
  "percent_collection_system_css": null,
  "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.