Vermont Square Water Hardness & Quality Report (2026)

Vermont Square, California, a neighborhood in south-central Los Angeles — a historically African-American south Los Angeles neighborhood between Vermont Avenue and Jefferson Boulevard, part of the historic south LA community that was central to the Great Migration and the civil rights movement in Los Angeles, adjacent to the University of Southern California (USC) campus — receives its municipal water supply from the LADWP blended Owens Valley Aqueduct and Metropolitan Water District (MWD) Colorado River imports, distributed through the south-central Los Angeles supply zone. Water hardness in Vermont Square measures 96 mg/L — classified as moderately soft.

Vermont Square's moderate softness — softer than the harbor area Wilmington (166.5 mg/L) but harder than the San Fernando Valley (61 mg/L) — reflects the south-central Los Angeles LADWP blend ratio and distribution characteristics. The south-central LA LADWP zone receives a blend of Owens Valley Aqueduct water (very soft, approximately 50–80 mg/L) and MWD Colorado River import (approximately 270–310 mg/L). Vermont Square's supply zone has a higher Owens Valley fraction than the harbor zone, producing the moderate 96 mg/L — consistent with the inner south-central LA LADWP distribution pattern.

With hardness at 96 mg/L, Vermont Square residents enjoy moderately soft water. LADWP consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.