Joe and Jennifer Montana are among the people suing San Francisco, alleging city departments did nothing to prevent “torrents of water and untreated sewage” from flooding their homes. The lawsuit, filed in the San Francisco County Superior Court on Aug. 24, was brought by dozens of families who live, rent or own property in the Marina District. The families allege that the San Francisco Public Utilities Commission and Department of Public Works, as well as contractors they hired, knowingly allowed negligent conditions to develop in their neighborhood. … This problem came to a head during winter storms over the past two years, the families say. The suit claims 4.5 million gallons of “untreated wastewater” flooded homes in Oct. 2021, and “torrents of water and untreated sewage” inundated their properties again in the storms of December 2022 and this past January.