Illinois / Reports /

Treatment bypass reported, Aug 15, 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 ILG580093:2:1, reported Aug 17, 2026, 12:00 AM CDT, retrieved 2026-11-06 08:38 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: City of Laharpe (federal wastewater discharge permit, NPDES, ILG580093). Outlet: not stated. Location: 40.59167, -90.97667; 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: “Unnamed creek”. DirtyWaterWatch links this report to South Branch La Moine River, IL. Match basis: the report's location, matched to the nearest tracked water.

3. Estimated downstream stretch

No downstream estimate is available for this report.

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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

Aug 15, 2026

Ended

Aug 17, 2026

Detail provided by the source

Times known to the day only

Reported to the source

Aug 17, 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

Treatment bypass: wastewater skips one or more treatment steps.

Status in the record

Ended (as reported)

Material

“wastewater diverted around part of the treatment process”

Volume

volume not reported (not stated whether estimated or measured)

Volume as reported

none

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 South Branch La Moine River: Discharge reported ongoing, Aug 14, 2026, 11:00 PM CDT to Aug 17, 2026, 11:00 PM CDT
• Caution South Branch La Moine River: Within the caution period after the reported end, Aug 17, 2026, 11:00 PM CDT to Aug 20, 2026, 11:00 PM 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

ILG580093:2:1

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "permit_identifier": "ILG580093",
  "program_report_form_set_id": "2",
  "program_report_form_id": "1",
  "sewer_overflow_bypass_event_key": "27106",
  "sewer_overflow_bypass_event_id_ext": "1",
  "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": "40.591667",
  "longitude_measure": "-90.976667",
  "payload_id": "316736934",
  "event_transaction_type": "N",
  "program_report_received_date": "2026-08-17",
  "program_report_start_date": "2026-08-15",
  "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": "G9B",
  "transaction_type": "N",
  "types": [
    "Bypass Event"
  ],
  "receiving_waters": [
    "Unnamed creek"
  ],
  "impacts": [],
  "causes": [
    {
      "code": "FTP",
      "desc": "Flooding of Treatment Plant - Hurricane or Large Stormwater Event",
      "other": null
    }
  ],
  "corrective_actions": [],
  "treatment": [],
  "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",
  "extreme_event_note": "G9B extreme-event report: spills too numerous to list; times are the report period"
}