Knik-Fairview Water Hardness & Quality Report (2026)

Knik-Fairview, Alaska, in Matanuska-Susitna Borough — an unincorporated Matanuska-Susitna Borough community adjacent to Palmer and Wasilla on the Knik Arm of Cook Inlet in south-central Alaska — receives its water from local Mat-Su Borough utilities, drawing from the Matanuska River watershed or local alluvial aquifer through the south-central Alaska distribution.

The moderately soft 69.5 mg/L hardness and TDS of 186.9 mg/L reflect the south-central Alaska Matanuska Valley supply's moderate character — slightly harder than the inner Anchorage supplies (Anchorage: ~40 mg/L) due to local Matanuska Valley calcareous glacial input. The Matanuska River watershed drains the Chugach Mountains — Cretaceous Valdez Group (greywacke — insoluble, dominant contribution), Jurassic Talkeetna Formation (insoluble volcanic), and Quaternary Matanuska Valley glacial outwash (slightly calcareous from crushed limestone carried by the Matanuska Glacier). The glacial calcareous contribution and the insoluble Chugach basement produce the moderately soft Mat-Su supply.

At 69.5 mg/L, Knik-Fairview's water is moderately soft — light scale forms slowly in appliances, dishwashers remain efficient, and bathroom fixtures need occasional cleaning. Semi-annual descaling is appropriate. The PFAS level of 1.1 ppt is very low — the Matanuska-Susitna Borough south-central Alaska rural corridor has minimal AFFF military PFAS sources, and the remote Chugach Mountain headwaters are essentially pristine.