California / Reports /

Sanitary sewer overflow (SSO) reported — Riverside City, Sep 11, 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 908094, reported Sep 14, 2026, 11:41 AM 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: Riverside City (federal wastewater discharge permit, NPDES, 8SSO10560). Outlet: “[house number removed] Kingsbury Pl”. Location: 33.92955, -117.44835; 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: “Hole Lake”. DirtyWaterWatch links this report to Hole Lake, 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

Sep 11, 2026, 8:00 AM PDT

Ended

Sep 14, 2026, 11:49 AM PDT

Detail provided by the source

Times known to the minute

Reported to the source

Sep 14, 2026, 11:41 AM PDT

Published

not given

Source last updated

Sep 23, 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

4,695 gallons (estimated)

Volume as reported

“4,695 gallons spilled (estimated total leaving the sewer system); 4,406 gallons reached surface water; 289 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 Hole Lake: Discharge reported ongoing, Sep 11, 2026, 8:00 AM PDT to Sep 14, 2026, 11:49 AM PDT
• Caution Hole Lake: Within the caution period after the reported end, Sep 14, 2026, 11:49 AM PDT to Sep 18, 2026, 11:49 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

908094

Original notice

Read the original notice

Earlier version

None: this is the first record

Later versions

None

{
  "region": "8",
  "wdid": "8SSO10560",
  "enrollee_status": "Active",
  "system_name": "Riverside City CS",
  "agency_name": "Riverside City",
  "spill_event_id": "908094",
  "version": "1.2",
  "spill_status": "Certified",
  "draft_submitted_on": "17-SEP-26",
  "first_certified_on": "23-SEP-26",
  "final_certified_on": "23-SEP-26",
  "spill_type": "Category 1 Spill",
  "location_name": "[house number removed] Kingsbury Pl",
  "enrollee_notified_at": "09/14/2026 11:13",
  "crew_arrival_at": "09/14/2026 11:40",
  "start_at": "09/11/2026 08:00",
  "caloes_notified_at": "09/14/2026 11:41",
  "caloes_control_number": "26-4744",
  "technical_report_on": null,
  "lat": "33.92955",
  "lon": "-117.44835",
  "appearance_points": "Lateral Clean Out (Public)",
  "volume_total_gal": "4695",
  "reached_drainage_system": "Y",
  "volume_recovered_from_drainage_gal": "0",
  "volume_left_in_drainage_gal": "4406",
  "volume_to_surface_water_gal": "4406",
  "volume_recovered_gal": "289",
  "destinations": "Drainage Conveyance System that discharges to surface water; Paved Surface; Street/Curb and Gutter (2 3)",
  "destination_points_given": "Y",
  "end_at": "09/14/2026 11:49",
  "causes": "Fats, Oil and Grease (FOG)",
  "failure_location": "Other (specify below)",
  "storm_event": "N",
  "response_completed_at": "09/14/2026 13:45",
  "receiving_water": "Hole Lake",
  "receiving_water_type": "Lake",
  "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": 33.93,
      "lon": -117.448
    },
    {
      "lat": 33.931,
      "lon": -117.451
    }
  ]
}