Inglewood Water Hardness & Quality Report (2026)

Inglewood, California, in southwestern Los Angeles County adjacent to Los Angeles International Airport, receives its water from the Los Angeles Department of Water and Power (LADWP), drawing from the same three-source blend serving greater Los Angeles: the Los Angeles Aqueduct (Owens Valley and Mono Basin Sierra Nevada water); State Water Project (SWP) imports; and groundwater from the West Coast Basin and Central Basin alluvial aquifers beneath the southwestern Los Angeles coastal plain. Water hardness measures 84.5 mg/L — classified as moderately soft.

Inglewood's moderately soft supply reflects the LADWP southwestern distribution zone's character, where the supply blend includes a higher proportion of soft Owens Valley aqueduct water (Sierra Nevada granite and metamorphic batholith snowmelt) blended with the West Coast Basin groundwater — an alluvial coastal aquifer system beneath the southwestern Los Angeles coastal plain recharged by the Los Angeles and San Gabriel Rivers from the mountains. The West Coast Basin groundwater has moderate residence times in sandy coastal plain alluvium with relatively low carbonate content, contributing minimal hardness above the aqueduct-dominated supply.

With hardness at 84.5 mg/L, Inglewood residents experience minimal to moderate scale challenges in household use. Faucet aerators and showerheads develop deposits slowly — bi-monthly cleaning with citric acid solution is sufficient maintenance. Soap and shampoo lather well. Dishwashers produce clean glassware with light rinse-aid use. LADWP consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.