California / Reports /

Sanitary sewer overflow (SSO) reported — Midway City Sanitation District, Oct 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 908725, reported Oct 25, 2026, 7:33 PM PDT, retrieved 2026-11-05 15:08 UTC · Read the original notice

Read the original notice · Report an error

1. Reported wastewater outlet

Operator named in the record: Midway City Sanitation District (federal wastewater discharge permit, NPDES, 8SSO10588). Outlet: “[house number removed] Lafayette St, Westminster, CA”. Location: 33.74262, -118.00558; 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: “Stormwater catch basin which conveys to Pacific ocean.”. DirtyWaterWatch links this report to Pacific Ocean, CA. Match basis: the water named in the report.

3. Estimated downstream stretch

We estimate routes only on rivers before they become tidal. We do not estimate routes through tidal water or lakes.

Open on the main map

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 25, 2026, 5:00 PM PDT

Ended

Oct 25, 2026, 6:35 PM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Oct 25, 2026, 7:33 PM 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

330 gallons (estimated)

Volume as reported

“330 gallons spilled (estimated total leaving the sewer system); 255 gallons reached surface water; 75 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 Pacific Ocean: Discharge reported ongoing, Oct 25, 2026, 5:00 PM PDT to Oct 25, 2026, 6:35 PM PDT
• Caution Pacific Ocean: Within the caution period after the reported end, Oct 25, 2026, 6:35 PM PDT to Oct 28, 2026, 6:35 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

908725

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "8",
  "wdid": "8SSO10588",
  "enrollee_status": "Active",
  "system_name": "Midway City SD CS",
  "agency_name": "Midway City Sanitation District",
  "spill_event_id": "908725",
  "version": "1.1",
  "spill_status": "Certified",
  "draft_submitted_on": null,
  "first_certified_on": "27-OCT-26",
  "final_certified_on": "27-OCT-26",
  "spill_type": "Category 1 Spill",
  "location_name": "[house number removed] Lafayette St, Westminster, CA",
  "enrollee_notified_at": "10/25/2026 17:19",
  "crew_arrival_at": "10/25/2026 18:20",
  "start_at": "10/25/2026 17:00",
  "caloes_notified_at": "10/25/2026 19:33",
  "caloes_control_number": "26-5537",
  "technical_report_on": null,
  "lat": "33.742615",
  "lon": "-118.005584",
  "appearance_points": "Manhole",
  "volume_total_gal": "330",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "0",
  "volume_left_in_drainage_gal": "255",
  "volume_to_surface_water_gal": "255",
  "volume_recovered_gal": "75",
  "destinations": "Drainage Conveyance System that discharges to surface water",
  "destination_points_given": "Y",
  "end_at": "10/25/2026 18:35",
  "causes": "Fats, Oil and Grease (FOG); Other (specify below)",
  "failure_location": "Gravity Mainline; Manhole",
  "storm_event": "N",
  "response_completed_at": "10/25/2026 19:30",
  "receiving_water": "Stormwater catch basin which conveys to Pacific ocean.",
  "receiving_water_type": "Ocean",
  "public_access_impact": "Other (specify below)",
  "closing_entity": "N/A",
  "days_closed_or_restricted": "0",
  "within_1000_ft_of_intake": "Y",
  "samples_collected": "N",
  "spill_category": "1",
  "reached_water": true,
  "destination_points": [
    {
      "lat": 33.743,
      "lon": -118.006
    }
  ]
}