On Nov. 13, 2019, National Primary Drinking Water Regulations: Proposed Lead and Copper Rule revisions were published in the Federal Register for public comment. 

Microbial quality of building water systems has increasingly become a focus of attention by regulatory authorities and the scientific community. 

Construction, renovation and maintenance of building water systems in complex facilities is inevitable, and each event may pose an infection risk from waterborne pathogens, particularly in healthcare or long-term care settings.