Sunland Water Hardness & Quality Report (2026)

Sunland, California, in Los Angeles County — an unincorporated Los Angeles County community adjacent to Tujunga and Shadow Hills in the northeast San Fernando Valley at the base of the San Gabriel Mountains — receives its water from the Los Angeles Department of Water and Power (LADWP), drawing primarily from the Owens Valley Aqueduct (Sierra Nevada snowmelt) through the LADWP northeast San Fernando Valley distribution.

The very soft 33.5 mg/L hardness and low TDS of 67.5 mg/L reflect an Owens Valley Aqueduct-dominant supply — very similar to Atwater Village, CA (36.5 mg/L) and among the softest supplies in the LA metro. The Owens Valley Aqueduct delivers water from Sierra Nevada snowmelt — Precambrian Bristlecone Granite (insoluble), Cretaceous granodiorite (insoluble), and Pleistocene glacial outwash (minimal mineral loading). The essentially insoluble Sierra Nevada crystalline watershed produces the very soft northeast San Fernando Valley supply.

At 33.5 mg/L, Sunland's water is very soft — essentially no scale forms, soap lathers abundantly, and appliances maintain excellent efficiency. Annual descaling is sufficient. The PFAS level of 2.9 ppt is low — the Los Angeles County Sunland-Tujunga northeast San Fernando Valley corridor and the LADWP Owens Valley supply carry minimal PFAS, and the Owens Valley Sierra Nevada source is relatively pristine.