Woodland Hills Water Hardness & Quality Report (2026)

Woodland Hills, California, a residential neighborhood in the western San Fernando Valley within the City of Los Angeles — known for its large lots and the Warner Center financial district — receives its municipal water supply from the Los Angeles Department of Water and Power (LADWP), sourcing from a blend of Owens Valley Aqueduct (Eastern Sierra Nevada — very soft, granodiorite watershed) and State Water Project (SWP) imports, with some local San Fernando Valley Groundwater Basin wells. Water hardness in Woodland Hills measures 42.5 mg/L — classified as very soft, among the softest readings in the LADWP system.

Woodland Hills' very soft supply reflects the dominance of Owens Valley and SWP imported water in the western San Fernando Valley LADWP distribution zone. The Woodland Hills–Canoga Park–West Hills corridor is among the softest zones in the LADWP system because the west San Fernando Valley distribution sector draws heavily from the Owens Valley Aqueduct (which originates from the Eastern Sierra Nevada granodiorite — some of the softest natural water in California at 30–55 mg/L). The SWP Sacramento–Feather River import is similarly soft. Local San Fernando Valley Groundwater Basin wells in this zone contribute minimally, and the relatively modern west Valley distribution infrastructure has lower mineral accumulation than the older urban cores.

With hardness at 42.5 mg/L, Woodland Hills residents enjoy very soft water with essentially no scale challenges. Soap and shampoo lather very well. LADWP consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.