NSF International has expanded its Plastics Certification Program for PE pipe manufacturers to encompass NSF/ANSI Standard 14, Plastic Piping Components and Related Materials, as well as model code plumbing requirements. Also, NSF announced a course in conjunction with HC Information Resources on "Waterborne Pathogens: Minimizing Risk Associated with Building Water Systems," to be held Sept. 14 at NSF'S Ann Arbor, MI, headquarters. The course will be taught by Matt Freije, author of "Legionellae Control in Health Care Facilities: A Guide for Minimizing Risk," and by Kelly Reynolds, an environmental science researcher and public health educator at the Univ. of Arizona.