Upland, CA Landscaping Rules: Rainwater Harvesting (2026)

11 (Parking and Loading) folds rainwater harvesting into the landscaping standards that apply to parking lots subject to site plan or design review. 100(I)(8), 'Rainwater Management,' directs that rainwater be managed on-site with designs that encourage infiltration, evapotranspiration and water re-use, and lists four tools: permeable paving for parking spaces, drive aisles and overflow parking; trees, shrubs and permeable landscaping planted through the lot for shade and infiltration; bio-retention features such as swales, vegetated islands and overflow ponds; and, in subsection (d), incorporating opportunities to harvest rainwater, active or passive, from rooftops and other hard surfaces for landscape irrigation.

100(I), which also set an 8-foot landscaped buffer against residential zones, shade-tree coverage targets, and permanent-landscape maintenance duties, so a harvesting system is reviewed together with those requirements rather than as a stand-alone permit. Subsection (I)(9) lets a project that incorporates solar panels into the parking lot design apply to the Development Services Director for reduced landscaping requirements, which can change how much rainwater infrastructure a given lot needs. 12. 12's separate, size-triggered water-efficiency thresholds.