California / Sewer operators /

City of Sacramento Department of Utilities: Combined Wastewater Collection and Treatment System

Sewer utility with combined sewers · California · Sacramento

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Solid dots mark combined sewer outfalls. Small hollow diamonds mark places named in its overflow reports (provisional). A yellow ring with a dashed edge means discharge likely or possible: heavy rain, no report received. Square boat markers mark boat launches listed by OpenBoatLaunch.

Federal wastewater discharge permit (NPDES)

CA0079111, 5SSO10901, 5SSO10901-C

Wastewater outlets

6 combined sewer outfalls listed by EPA or state agencies; 2 places named in its own overflow reports (provisional locations) · List

Waters listed as receiving wastewater

Sacramento River

Tracked waters

Sacramento River, CA

Discharge records counted

4 records · latest Sep 10, 2026, 8:00 AM PDT

Total reported volume in these records

2,179 gallons across the 4 records that give a volume

These totals reflect the records we track. Missing volumes and gaps in reporting limit comparisons between operators.

Sources: EPA ECHO and the operator and state sources linked below. Counts use the discharge records on this page. Updated 2026-11-06 09:03 UTC.

Public notices and alerts

Pages where City of Sacramento Department of Utilities: Combined Wastewater Collection and Treatment System or the state publishes its notices (check them for an alert sign-up):

• www.waterboards.ca.gov/water_issues/programs/sso/docs/data_files/Cat1-2-3-Spills.txt

Its public-notice channels

• Health department page · Required by law

  Health officer notice not read

  Health and Safety Code 5411.5(a): any person who causes or permits a discharge of sewage in or on waters of the State "shall, as soon as that person has knowledge of the discharge, immediately notify the local health officer or the director of environmental health of the discharge"

• Operator's notice page · Required by a permit (CA0079111)

  CSO public notification not read

  Order R5-2026-0003 (NPDES CA0079111): "The Discharger shall implement its 'Spill Emergency Response Plan' for CSS outflow notifications and the 'Combined Wastewater Collection and Treatment System Plan of Operations' for CSO notifications to ensure that the public is receiving adequate notification of CSS outflows and CSO's in accordance with the U.S. EPA's CSO Control Policy"

Source: City of Sacramento Department of Utilities: Combined Wastewater Collection and Treatment System's public notice and alert pages and the state's notification records; DirtyWaterWatch register of public-notice channels and its page monitor.

Report a missing notice or error

Rain and discharges

The NOAA MRMS radar-only rainfall estimate for the 24 hours to the latest hour, read every hour at each outfall from the radar grid. We show a caution when the rain reaches the amount below and no discharge report has arrived.

Wastewater outlets

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

6 combined sewer outfalls listed by EPA or state agencies; 2 places named in its own overflow reports (provisional locations). Discharge likely or possible now at some of them: see Rain and discharges above.

Reports and advisories

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.

Sources: State Water Board CIWQS Sanitary Sewer System spill data: Cat1-2-3-Spills.txt (nightly flat file), retrieved 2026-11-05 15:08 UTC. A report's record id and times show when you hover or focus its "report" link.

Download these reports as CSV

All reports in California by year: 2026 (4 from City of Sacramento Department of Utilities: Combined Wastewater Collection and Treatment System)

Other sewer operators on these waters

• Sacramento River, CA: City of Anderson, City of Chico, City of Corning, City of Dunsmuir, City of Mt Shasta, City of Red Bluff, City of Redding, City of Rio Vista, Rio Alto WD, Sacramento Area Sewer District

The last 90 days

Reported discharges over time