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Sanitary sewer overflow (SSO) reported — US Marine Corps Base Camp Pendleton, Oct 16, 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 908615, reported Oct 16, 2026, 10:25 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: US Marine Corps Base Camp Pendleton (federal wastewater discharge permit, NPDES, 9SSO10710). Outlet: “Bldg 14036 Mess Hall”. Location: 33.31100, -117.30400; location source: given in the source record, accurate to about 150 metres.

Outfall: a pipe or outlet where wastewater enters a water body.

2. Waters named in the notice

The notice names: “Storm drain ultimately leads to Pilgrim Creek”. DirtyWaterWatch links this report to Pilgrim 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

Oct 16, 2026, 7:25 AM PDT

Ended

Oct 16, 2026, 8:06 AM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Oct 16, 2026, 10:25 AM 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

Ended (as reported)

Material

“untreated sewage”

Volume

205 gallons (estimated)

Volume as reported

“205 gallons spilled (estimated total leaving the sewer system); 191 gallons reached surface water; 14 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 Pilgrim Creek: Discharge reported ongoing, Oct 16, 2026, 7:25 AM PDT to Oct 16, 2026, 8:06 AM PDT
• Caution Pilgrim Creek: Within the caution period after the reported end, Oct 16, 2026, 8:06 AM PDT to Oct 19, 2026, 8:06 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

908615

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "9",
  "wdid": "9SSO10710",
  "enrollee_status": "Active",
  "system_name": "USMC Base, Camp Pendleton CS",
  "agency_name": "US Marine Corps Base Camp Pendleton",
  "spill_event_id": "908615",
  "version": "1.3",
  "spill_status": "Certified",
  "draft_submitted_on": "16-OCT-26",
  "first_certified_on": "29-OCT-26",
  "final_certified_on": "29-OCT-26",
  "spill_type": "Category 1 Spill",
  "location_name": "Bldg 14036 Mess Hall",
  "enrollee_notified_at": "10/16/2026 07:25",
  "crew_arrival_at": "10/16/2026 07:25",
  "start_at": "10/16/2026 07:25",
  "caloes_notified_at": "10/16/2026 10:25",
  "caloes_control_number": "26-5378",
  "technical_report_on": null,
  "lat": "33.31102",
  "lon": "-117.30444",
  "appearance_points": "Lower Lateral (Private)",
  "volume_total_gal": "205",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "0",
  "volume_left_in_drainage_gal": "191",
  "volume_to_surface_water_gal": "191",
  "volume_recovered_gal": "14",
  "destinations": "Drainage Conveyance System; Paved Surface; Unpaved Surface",
  "destination_points_given": "Y",
  "end_at": "10/16/2026 08:06",
  "causes": "Pipe Structural Problem/Failure - Installation",
  "failure_location": "Lower Lateral",
  "storm_event": "N",
  "response_completed_at": "10/16/2026 15:00",
  "receiving_water": "Storm drain ultimately leads to Pilgrim 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": 33.311,
      "lon": -117.304
    }
  ]
}