SB 521

Data centers; rainwater harvesting systems. Requires any new construction or substantial expansion, as defined in the bill, of a data center, as defined in the bill, to (i) include a rainwater harvesting system sufficient to capture rainwater runoff from at least 30 percent of the total roof surface area of such data center and (ii) use such harvested rainwater for non-potable water needs, as defined in the bill, including irrigation or the dissipation of heat from any component of such data center. The bill also requires any such system to be designed, installed, and periodically inspected by a person certified by the American Society of Sanitary Engineering and authorizes the State Board of Health to promulgate regulations in collaboration with the Department of Environmental Quality as necessary to effectuate the provisions of the bill.