The irrigation with potable water of non-functional turf at commercial, industrial, and institutional sites. For the purposes of this subdivision, "non-functional turf" means ground cover surface of mowed grass that is ornamental and not regularly used for human recreational purposes. Non-functional turf does not include school fields, sports fields, and areas regularly used for civic or community events. "Commercial, industrial and institutional" refers to commercial water users, industrial water users, and institutional water users as respectively defined in Water Code Section 10608.12 subdivisions (e), (i), and (j), and includes homeowners' associations, common interest developments, community service organizations, and other similar entities but does not include the residences of these entities' members or separate interests.