Wasco Water Hardness & Quality Report (2026)

Wasco, California, in Kern County — a major northern San Joaquin Valley agricultural and rose capital city (Wasco is a significant Kern County city — the self-proclaimed 'Rose Capital of the Nation' (Wasco and the surrounding Kern County area are the most important commercial rose growing region in the United States; California produces approximately 60% of the nation's roses, and Wasco is at the center of this industry; major rose growers and nurseries are located in and around Wasco; the annual Wasco Festival of Roses celebrates this agricultural identity)); Wasco is part of the northern Kern County San Joaquin Valley agricultural corridor — one of the most productive agricultural regions in the world (the Kern County San Joaquin Valley produces enormous quantities of grapes, citrus, almonds, pistachios, and other high-value crops supported by extensive irrigation infrastructure); Wasco is also the home of the Wasco State Prison (a significant California Department of Corrections facility — one of the major correctional institutions in the San Joaquin Valley), a diverse Kern County community with a primarily Hispanic-American, agricultural worker, and working-class San Joaquin Valley population — draws its municipal water supply via the City of Wasco Water Division. Water hardness in Wasco measures 79.5 mg/L — classified as moderately soft.

Wasco's moderate softness reflects the northern Kern County San Joaquin Valley alluvial plain's calcareous-poor character. The State Water Project and local groundwater supply the Wasco zone with effective treatment, producing the moderately soft 79.5 mg/L.

With hardness at 79.5 mg/L, Wasco residents enjoy moderately soft water. City of Wasco Water Division consistently delivers water meeting all California SWRCB and EPA Safe Drinking Water Act requirements.