Treatment bypass reported — ILLINOIS AMERICAN WATER COMPANY - GRANITE CITY WWTP, Sep 10, 2026

Record details

Original source data

{
  "permit_identifier": "IL0033481",
  "program_report_form_set_id": "27",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_key": "27287",
  "sewer_overflow_bypass_event_id_ext": "1",
  "sewer_overflow_bypass_description_text": "USACE CCTV Levee Inspection",
  "sewer_overflow_bypass_reporting_requirement_code": "4",
  "sewer_overflow_reporting_requirement_desc": "Anticipated bypass notice",
  "latitude_measure": "38.694444",
  "longitude_measure": "-90.180833",
  "sewer_overflow_bypass_duration_hours": "10.00",
  "sewer_overflow_bypass_start_datetime": "2026-09-10 12:00:00",
  "sewer_overflow_bypass_end_datetime": "2026-09-10 22:00:00",
  "discharge_quantification_method_code": "MDM",
  "discharge_quantification_method_desc": "Manual Direct Measurement",
  "sewer_overflow_bypass_discharge_volume_gallons": "1.00",
  "anticipated_bypass_text": "Discharge must be ceased in order to view levee integrity via CCTV. Influent flow directed to COTs for storage, then pumped into treatment plant after conclusion of inspection. Discharge from COTs not anticipated.",
  "anticipated_bypass_expect_limit_violation": "N",
  "payload_id": "318062537",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-09-01",
  "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": "G9C",
  "transaction_type": "N",
  "types": [
    "Bypass Event"
  ],
  "receiving_waters": [
    "Mississippi River"
  ],
  "impacts": [
    {
      "code": "NOI",
      "desc": "No observable impacts",
      "other": null
    }
  ],
  "causes": [
    {
      "code": "ROU",
      "desc": "Routine Maintenance at Treatment Plant",
      "other": null
    }
  ],
  "corrective_actions": [
    {
      "code": "OTH",
      "desc": "Other",
      "other": "COTs as storage, no expected discharge"
    }
  ],
  "treatment": [
    {
      "code": null,
      "desc": null,
      "bypassed_equipment": "Other treatment plant 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.