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Contingencies
 12 Months Ended
Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]  
Contingencies Contingencies
SJW Group and its subsidiaries are subject to ordinary routine litigation incidental to its business. In October 2023, CWC, a subsidiary of SJW Group, was named as a defendant in a putative class action lawsuit alleging that the water provided by CWC contained contaminants. The case is currently pending in the State of Connecticut Superior Court. CWC is vigorously defending itself in this lawsuit. At this time, SJW Group is unable to provide a reasonable estimate of any loss.
SJWC and CWC are plaintiffs in a lawsuit against manufacturers of certain PFAS compounds for damages, contribution and reimbursement of costs incurred and continuing to be incurred to address the presence of such PFAS compounds in public water supply systems owned and operated by these utility subsidiaries and throughout their respective service areas. The lawsuit is part of Multi-District Litigation (“MDL”), that commenced on December 7, 2018, in the United States District Court for the District of South Carolina. MWC has submitted timely claims as a settlement class member.
On February 8, 2024, the MDL court approved settlements involving defendants The Chemours Company, Corteva, Inc., and DuPont de Nemours, Inc. to resolve claims brought in the MDL against them by public water systems, including SJWC and CWC. On March 29, 2024, the MDL court approved a similar settlement involving defendant 3M. On November 22, 2024, the MDL court approved settlements involving defendants Tyco Fire Products LP, Chemgaurd, Inc., and BASF Corporation. SJW Group is monitoring and evaluating the ongoing litigation and settlement activity with the PFAS manufacturers for potential impacts to the various claims that these utility subsidiaries have asserted.