Brentwood Water Hardness & Quality Report (2026)

Brentwood, Los Angeles, California — a major Westside Los Angeles neighborhood (Brentwood is one of the most affluent neighborhoods in Los Angeles — an upscale residential community on the west side between Santa Monica, Bel-Air, and Pacific Palisades, home of many entertainment industry executives, professionals, and wealthy residents), adjacent to UCLA (the University of California Los Angeles campus is directly adjacent to Brentwood in Westwood — one of the most prestigious public universities in the United States), home of the Getty Center (the extraordinary J. Paul Getty Museum campus in the Santa Monica Mountains above Brentwood — one of the most architecturally stunning and culturally significant museum complexes in Los Angeles), a diverse Los Angeles County community with a significant Jewish-American, entertainment professional, and tech professional population, and one of the most prominent of the west Los Angeles Westside neighborhoods — draws its municipal water supply via the Los Angeles Department of Water and Power (LADWP). Water hardness in Brentwood measures 55 mg/L — classified as very soft.

Brentwood's very soft supply reflects the Westside LADWP distribution zone's dominance of the State Water Project supply. The LADWP Westside zone primarily distributes MWD State Water Project supply (Sierra Nevada Feather River — calcareous-poor granite, producing very soft water) to the Brentwood area. The dominant State Water Project produces the very soft 55 mg/L.

With hardness at 55 mg/L, Brentwood residents enjoy very soft water. LADWP consistently delivers water meeting all California DDW and EPA Safe Drinking Water Act requirements.