WAC 246-290-668. Watershed control

(1) The purveyor shall, to the extent possible, exercise surveillance over conditions and activities in the watershed affecting source water quality. The purveyor shall develop and implement a department-approved watershed control program. (2) The purveyor shall include a current evaluation of the watershed as part of the watershed control program within the water system plan under WAC 246-290-100 or small water system management program under WAC 246-290-105 , whichever is applicable. (3) The watershed evaluation must include a description of: (a) Conditions/activities in the watershed that are adversely affecting source water quality; (b) Changes in the watershed that could adversely affect source water quality that have occurred since the last watershed evaluation; (c) Sample results from the monitoring program the purveyor uses to assess the adequacy of watershed protection; and (d) Recommendations for improved watershed control.