Herriman Water Hardness & Quality Report (2026)

Herriman, Utah, in Salt Lake County — a major southwest Salt Lake Valley rapidly growing community (Herriman is one of the fastest-growing cities in Utah and one of the fastest-growing in the United States — a Salt Lake County city in the southwest valley that has grown from a small rural community of a few thousand residents in 2000 to a rapidly expanding suburban community of over 60,000; Herriman's growth has been driven by affordable housing relative to the north Salt Lake Valley and new master-planned residential developments), a diverse Salt Lake County community with a primarily young Latter-day Saint family and suburban professional population, adjacent to South Jordan and Riverton in the southwest Salt Lake Valley, home of Herriman City Park and the Real Salt Lake training facility (Utah Royals' and RSL's training complex is in Herriman), and one of the most explosively growing Salt Lake County communities — draws its municipal water supply via the Jordan Valley Water Conservancy District. Water hardness in Herriman measures 284.5 mg/L — classified as extremely hard.

Herriman's extremely hard supply reflects the southwest Salt Lake Valley's Great Basin closed-basin highly calcareous geology. The Jordan Valley Water draws from the Quaternary Lake Bonneville lacustrine deposits and Paleozoic Oquirrh Range limestone (extremely calcareous carbonate). Limited softening produces the extreme 284.5 mg/L.

At 284.5 mg/L, Herriman residents face severe hard water challenges. Water softeners and regular appliance descaling are essential. Jordan Valley Water Conservancy District consistently delivers water meeting all Utah DEQ and EPA Safe Drinking Water Act requirements.