Water conservation and efficiency measures

Water conservation and efficiency measures. (1) Persons subject to this chapter shall implement CEMs in compliance with the CEM required elements in Table 1, Table 2, the optional list in sub. (2) , or additional CEM required elements as identified by the department. (2) The department shall maintain a list of optional CEMs by water use sector that have been determined to be adequate and effective to reduce water use or increase water reuse or efficiency. The optional list may be used to meet the requirements in ss. NR 852.05 (3) and 852.06 (1) and the optional list may include retrofitting options.