John M. Rattenbury, PE, CPD, ARCSA AP, LEED AP, is a registered professional mechanical engineer in Massachusetts and several other states. He holds a Certified in Plumbing Design (CPD) credential from the American Society of Plumbing Engineers (ASPE). He has been practicing in the field of plumbing engineering since 1993 and is currently a senior engineer at R. G. Vanderweil Engineers, LLP in Boston, Massachusetts.
The shift to water-saving plumbing fixtures has increased drainpipe corrosion and blockages, especially in cast iron and copper pipes. While regulations like the 1994 Energy Policy Act promote water conservation, they also lead to solids buildup, compromising pipe integrity and highlighting the need for effective plumbing maintenance.
