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Sanitary sewer overflow (SSO) reported — San Rafael Sanitation District, Aug 25, 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 907854, reported Aug 28, 2026, 12:00 AM 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: San Rafael Sanitation District (federal wastewater discharge permit, NPDES, 2SSO10184). Outlet: “Bayview St. and D St.”. Location: 37.96770, -122.53302; 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: “San Rafael Creek”. DirtyWaterWatch links this report to San Rafael Creek, CA. Match basis: the water named in the report.

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 25, 2026, 10:00 AM PDT

Ended

Aug 25, 2026, 1:55 PM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Aug 28, 2026, 12:00 AM PDT

Published

not given

Source last updated

Sep 9, 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

940 gallons (estimated)

Volume as reported

“940 gallons spilled (estimated total leaving the sewer system); 412 gallons reached surface water; 528 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

Status history from this report

• Discharge or advisory reported San Rafael Creek: Discharge reported ongoing, Aug 25, 2026, 10:00 AM PDT to Aug 25, 2026, 1:55 PM PDT
• Caution San Rafael Creek: Within the caution period after the reported end, Aug 25, 2026, 1:55 PM PDT to Aug 28, 2026, 1:55 PM PDT

Source: DirtyWaterWatch calculations using this report and the published status rules. Updated 2026-11-06 09:03 UTC.

Source and versions

Source

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

Source record number

907854

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "2",
  "wdid": "2SSO10184",
  "enrollee_status": "Active",
  "system_name": "San Rafael SD CS",
  "agency_name": "San Rafael Sanitation District",
  "spill_event_id": "907854",
  "version": "1.2",
  "spill_status": "Certified",
  "draft_submitted_on": "28-AUG-26",
  "first_certified_on": "09-SEP-26",
  "final_certified_on": "09-SEP-26",
  "spill_type": "Category 1 Spill",
  "location_name": "Bayview St. and D St.",
  "enrollee_notified_at": "08/25/2026 10:01",
  "crew_arrival_at": "08/25/2026 11:06",
  "start_at": "08/25/2026 10:00",
  "caloes_notified_at": null,
  "caloes_control_number": null,
  "technical_report_on": null,
  "lat": "37.967704",
  "lon": "-122.53302",
  "appearance_points": "Other (specify below)",
  "volume_total_gal": "940",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "528",
  "volume_left_in_drainage_gal": "0",
  "volume_to_surface_water_gal": "412",
  "volume_recovered_gal": "528",
  "destinations": "Drainage Conveyance System that discharges to surface water; Surface Water",
  "destination_points_given": "Y",
  "end_at": "08/25/2026 13:55",
  "causes": "Pipe Structural Problem/Failure - Controls",
  "failure_location": "Gravity Mainline",
  "storm_event": "N",
  "response_completed_at": "08/25/2026 15:51",
  "receiving_water": "San Rafael Creek",
  "receiving_water_type": "Stream/Creek",
  "public_access_impact": "Other (specify below)",
  "closing_entity": "N/A",
  "days_closed_or_restricted": "0",
  "within_1000_ft_of_intake": "N",
  "samples_collected": "N",
  "spill_category": "1",
  "reached_water": true,
  "destination_points": [
    {
      "lat": 37.968,
      "lon": -122.533
    },
    {
      "lat": 37.968,
      "lon": -122.533
    },
    {
      "lat": 37.968,
      "lon": -122.533
    },
    {
      "lat": 37.968,
      "lon": -122.53
    }
  ]
}