Lamont Water Hardness & Quality Report (2026)

Lamont, California, in Kern County — an unincorporated Kern County community adjacent to Arvin and Bakersfield in the south San Joaquin Valley — receives its water from the Lamont Public Utility District, drawing from the Kern River and State Water Project (Kern County) imports through the south San Joaquin Valley distribution.

The moderately hard 101 mg/L hardness and TDS of 253.4 mg/L reflect the south San Joaquin Valley Kern County supply's moderate calcareous character — harder than the Fresno-area communities (Ripon: 73 mg/L) due to the south Valley's more calcareous local groundwater and Kern River input with higher calcareous load from the southern Sierra Nevada. The Kern River at Kern County drains the Sierra Nevada — Cretaceous Kern Canyon Granodiorite (slightly calcareous at contact zones), Triassic calcareous metasedimentary terrane (calcareous — primary hardness contributor at the south Sierra), and the south Valley floor alluvial calcareous concentration.

At 101 mg/L, Lamont's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 4.8 ppt warrants a certified drinking water filter — Edwards Air Force Base (Kern County — AFFF, the dominant south San Joaquin Valley PFAS source directly in the Kern watershed) contributes to Lamont's readings.