California / Reports /

Sanitary sewer overflow (SSO) reported — Corning City, Oct 28, 2026

Not stated by the source · California State Water Resources Control Board (CIWQS Sanitary Sewer System Database)

Source: California State Water Resources Control Board (CIWQS Sanitary Sewer System Database) via State Water Board CIWQS Sanitary Sewer System spill data: Cat1-2-3-Spills.txt (nightly flat file), record 908767, reported Oct 28, 2026, 6:15 PM PDT, retrieved 2026-11-05 15:08 UTC · Read the original notice

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1. Reported wastewater outlet

Operator named in the record: Corning City (federal wastewater discharge permit, NPDES, 5SSO10805). Outlet: “Marguerite-Divisadero”. Location: 39.92967, -122.16854; 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 no water. Not linked to a mapped water. Name match too far (8.2 km) and the report's town (corning) is not among the water's towns (Anderson, Butte City, Chico, Clarksburg).

3. Estimated downstream stretch

We estimate routes only on rivers before they become tidal. We do not estimate routes through tidal water or lakes.

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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

Oct 28, 2026, 12:00 PM PDT

Ended

not reported

Detail provided by the source

Times known to the minute

Reported to the source

Oct 28, 2026, 6:15 PM PDT

Published

not given

Source last updated

Oct 29, 2026, 12:00 AM PDT

Last retrieved by DirtyWaterWatch

2026-11-05 15:08 UTC

What and how much

Type

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.

Status in the record

Not stated by the source

Material

“untreated sewage”

Volume

750 gallons (estimated)

Volume as reported

“750 gallons spilled (estimated total leaving the sewer system); 0 gallons reached surface water; 500 gallons recovered”

Advice from California State Water Resources Control Board (CIWQS Sanitary Sewer System Database)

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

Source and versions

Source

State Water Board CIWQS Sanitary Sewer System spill data: Cat1-2-3-Spills.txt (nightly flat file)

Source record number

908767

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "5R",
  "wdid": "5SSO10805",
  "enrollee_status": "Active",
  "system_name": "Corning Indust/Domestic CS",
  "agency_name": "Corning City",
  "spill_event_id": "908767",
  "version": "1.1",
  "spill_status": "Draft Submitted",
  "draft_submitted_on": "29-OCT-26",
  "first_certified_on": null,
  "final_certified_on": null,
  "spill_type": "Category 1 Spill",
  "location_name": "Marguerite-Divisadero",
  "enrollee_notified_at": "10/28/2026 16:25",
  "crew_arrival_at": "10/28/2026 17:10",
  "start_at": "10/28/2026 12:00",
  "caloes_notified_at": "10/28/2026 18:15",
  "caloes_control_number": "26-5598",
  "technical_report_on": null,
  "lat": "39.92967",
  "lon": "-122.16854",
  "appearance_points": "Gravity Mainline",
  "volume_total_gal": "750",
  "reached_drainage_system": "N",
  "volume_recovered_from_drainage_gal": "500",
  "volume_left_in_drainage_gal": "250",
  "volume_to_surface_water_gal": "0",
  "volume_recovered_gal": "500",
  "destinations": null,
  "destination_points_given": null,
  "end_at": null,
  "causes": null,
  "failure_location": null,
  "storm_event": null,
  "response_completed_at": null,
  "receiving_water": null,
  "receiving_water_type": null,
  "public_access_impact": null,
  "closing_entity": null,
  "days_closed_or_restricted": null,
  "within_1000_ft_of_intake": null,
  "samples_collected": null,
  "spill_category": "1",
  "reached_water": true
}