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Sanitary sewer overflow (SSO) reported — Sonoma County Water Agency (SCWA), Sep 20, 2026

Ended (as reported) · 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 908201, reported Sep 20, 2026, 5:13 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: Sonoma County Water Agency (SCWA) (federal wastewater discharge permit, NPDES, 2SSO10196). Outlet: “[house number removed] 5th St. West (MH136-119)”. Location: 38.29344, -122.46802; 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: “Fryer Creek”. Not linked to a mapped water.

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

Sep 20, 2026, 4:24 PM PDT

Ended

Sep 20, 2026, 7:30 PM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Sep 20, 2026, 5:13 PM PDT

Published

not given

Source last updated

Oct 5, 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

Ended (as reported)

Material

“untreated sewage”

Volume

2,790 gallons (estimated)

Volume as reported

“2,790 gallons spilled (estimated total leaving the sewer system); 2,790 gallons reached surface water; 0 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

908201

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "2",
  "wdid": "2SSO10196",
  "enrollee_status": "Active",
  "system_name": "Sonoma Valley County S.D. CS",
  "agency_name": "Sonoma County Water Agency (SCWA)",
  "spill_event_id": "908201",
  "version": "1.3",
  "spill_status": "Certified",
  "draft_submitted_on": "23-SEP-26",
  "first_certified_on": "05-OCT-26",
  "final_certified_on": "05-OCT-26",
  "spill_type": "Category 1 Spill",
  "location_name": "[house number removed] 5th St. West (MH136-119)",
  "enrollee_notified_at": "09/20/2026 16:45",
  "crew_arrival_at": "09/20/2026 19:00",
  "start_at": "09/20/2026 16:24",
  "caloes_notified_at": "09/20/2026 17:13",
  "caloes_control_number": "26-4874",
  "technical_report_on": "29-SEP-26",
  "lat": "38.29344",
  "lon": "-122.46802",
  "appearance_points": "Lateral Clean Out (Private); Manhole",
  "volume_total_gal": "2790",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "0",
  "volume_left_in_drainage_gal": "2790",
  "volume_to_surface_water_gal": "2790",
  "volume_recovered_gal": "0",
  "destinations": "Drainage Conveyance System that discharges to surface water",
  "destination_points_given": "Y",
  "end_at": "09/20/2026 19:30",
  "causes": "Fats, Oil and Grease (FOG)",
  "failure_location": "Gravity Mainline",
  "storm_event": "N",
  "response_completed_at": "09/25/2026 15:00",
  "receiving_water": "Fryer Creek",
  "receiving_water_type": "Stream/Creek",
  "public_access_impact": "Temporary Restricted Use",
  "closing_entity": "Public Health",
  "days_closed_or_restricted": "4",
  "within_1000_ft_of_intake": "N",
  "samples_collected": "N",
  "spill_category": "1",
  "reached_water": true,
  "destination_points": [
    {
      "lat": 38.292,
      "lon": -122.467
    }
  ]
}