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Sanitary sewer overflow (SSO) reported — City of Santa Clarita, Sep 17, 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 908181, reported Sep 17, 2026, 10:13 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: City of Santa Clarita (federal wastewater discharge permit, NPDES, 4SSO10429). Outlet: “1296 - 0788 ([house number removed] Del Monte Drive, Santa Clarita, CA 91355)”. Location: 34.41228, -118.55172; 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: “Santa Clara River”. DirtyWaterWatch links this report to Santa Clara River, 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

Sep 17, 2026, 8:07 AM PDT

Ended

Sep 17, 2026, 9:45 AM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Sep 17, 2026, 10:13 AM PDT

Published

not given

Source last updated

Oct 1, 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

490 gallons (estimated)

Volume as reported

“490 gallons spilled (estimated total leaving the sewer system); 490 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

Status history from this report

• Discharge or advisory reported Santa Clara River: Discharge reported ongoing, Sep 17, 2026, 8:07 AM PDT to Sep 17, 2026, 9:45 AM PDT
• Caution Santa Clara River: Within the caution period after the reported end, Sep 17, 2026, 9:45 AM PDT to Sep 20, 2026, 9:45 AM 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

908181

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "4",
  "wdid": "4SSO10429",
  "enrollee_status": "Active",
  "system_name": "Santa Clarita City CS",
  "agency_name": "City of Santa Clarita",
  "spill_event_id": "908181",
  "version": "1.2",
  "spill_status": "Certified",
  "draft_submitted_on": "21-SEP-26",
  "first_certified_on": "01-OCT-26",
  "final_certified_on": "01-OCT-26",
  "spill_type": "Category 1 Spill",
  "location_name": "1296 - 0788 ([house number removed] Del Monte Drive, Santa Clarita, CA 91355)",
  "enrollee_notified_at": "09/17/2026 08:36",
  "crew_arrival_at": "09/17/2026 09:10",
  "start_at": "09/17/2026 08:07",
  "caloes_notified_at": "09/17/2026 10:13",
  "caloes_control_number": "26-4810",
  "technical_report_on": null,
  "lat": "34.41228",
  "lon": "-118.55172",
  "appearance_points": "Manhole",
  "volume_total_gal": "490",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "0",
  "volume_left_in_drainage_gal": "490",
  "volume_to_surface_water_gal": "490",
  "volume_recovered_gal": "0",
  "destinations": "Drainage Conveyance System that discharges to surface water; Paved Surface; Street/Curb and Gutter (2 3)",
  "destination_points_given": "Y",
  "end_at": "09/17/2026 09:45",
  "causes": "Debris from Construction; Other (specify below); Vandalism (specify below)",
  "failure_location": "Gravity Mainline",
  "storm_event": "N",
  "response_completed_at": "09/17/2026 13:21",
  "receiving_water": "Santa Clara River",
  "receiving_water_type": "River",
  "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": 34.412,
      "lon": -118.552
    },
    {
      "lat": 34.412,
      "lon": -118.551
    }
  ]
}