Plumbing engineers are facing new liability risks from insurance carriers, revealed by new warnings and commentary from industry leadership regarding indoor containment RPZs. Because of the need for pure water in the public water supply and the undetectable nature of the DCs, purveyors are demanding more RPZs and ignoring the legacy hazard guidance. RPZs are designed to engulf the immediate surrounding area. Indoor placement of 3” & larger RPZs adds irrational risk for PO & designer. Placing the CBPA inside costs PO $000s more than outside. There is a need to address sudden flood water flows disqualifies MEP from CBPA Design. Your local water district must be encouraged to adopt new details and guidelines that promote best practices and adoption by CEs.