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Sanitary sewer overflow (SSO) reported — Oakland City DPW, Oct 14, 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 908614, reported Oct 16, 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: Oakland City DPW (federal wastewater discharge permit, NPDES, 2SSO11204). Outlet: “Grass Valley & Golf Links Rd”. Location: 37.75119, -122.12408; 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: “Lion creek, Arroyo Viejo creek, and Damon Slough”. DirtyWaterWatch links this report to Arroyo Viejo, 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

Oct 14, 2026, 1:00 PM PDT

Ended

Oct 14, 2026, 4:03 PM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Oct 16, 2026, 12:00 AM PDT

Published

not given

Source last updated

Oct 27, 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

369 gallons (estimated)

Volume as reported

“369 gallons spilled (estimated total leaving the sewer system); 369 gallons reached surface water; 136 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 Arroyo Viejo: Discharge reported ongoing, Oct 14, 2026, 1:00 PM PDT to Oct 14, 2026, 4:03 PM PDT
• Caution Arroyo Viejo: Within the caution period after the reported end, Oct 14, 2026, 4:03 PM PDT to Oct 17, 2026, 4:03 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

908614

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "2",
  "wdid": "2SSO11204",
  "enrollee_status": "Active",
  "system_name": "Oakland City CS",
  "agency_name": "Oakland City DPW",
  "spill_event_id": "908614",
  "version": "1.3",
  "spill_status": "Certified",
  "draft_submitted_on": "16-OCT-26",
  "first_certified_on": "27-OCT-26",
  "final_certified_on": "27-OCT-26",
  "spill_type": "Category 1 Spill",
  "location_name": "Grass Valley & Golf Links Rd",
  "enrollee_notified_at": "10/14/2026 14:00",
  "crew_arrival_at": "10/14/2026 14:43",
  "start_at": "10/14/2026 13:00",
  "caloes_notified_at": null,
  "caloes_control_number": null,
  "technical_report_on": null,
  "lat": "37.75119",
  "lon": "-122.12408",
  "appearance_points": "Gravity Mainline",
  "volume_total_gal": "369",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "136",
  "volume_left_in_drainage_gal": "233",
  "volume_to_surface_water_gal": "369",
  "volume_recovered_gal": "136",
  "destinations": "Drainage Conveyance System that discharges to surface water; Paved Surface; Street/Curb and Gutter (2 3)",
  "destination_points_given": "Y",
  "end_at": "10/14/2026 16:03",
  "causes": "Root Intrusion",
  "failure_location": "Gravity Mainline",
  "storm_event": "N",
  "response_completed_at": "10/20/2026 15:00",
  "receiving_water": "Lion creek, Arroyo Viejo creek, and Damon Slough",
  "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": 37.755,
      "lon": -122.146
    }
  ]
}