If you are not using your household water outlets, there may be a problem in the public sewer main. Call the District’s 24-hour customer help line at 415-259-2949 to request service. If your household water outlets are being used, turn them off to stop the running water. This indicates a possible problem in your side sewer (lateral). You’ll need to call a plumbing company as the district is only responsible for public sewer pipes.
Constant Overflow
If the overflow is constant, remove the cap on the cleanout or overflow device (if present) located outside the building. Use towels, sheets, rags, etc. to keep the sewage from spreading and damaging other parts of the house.