Hidden Valley Water Hardness & Quality Report (2026)

Hidden Valley's drinking water is managed by the City of Calgary, drawing from the Bow River at the Bearspaw Water Treatment Plant — Calgary's northwest water treatment facility. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness in Hidden Valley is 244.5 mg/L (14.3 gpg) — classified as very hard by Health Canada, consistent with the Bearspaw plant north Calgary distribution corridor.

Hidden Valley (a residential community in the far north of Calgary near Country Hills Boulevard NE — a community of single-family homes and townhouses at the north Calgary plateau edge between the Hanson Ranch area and the Country Hills NE corridor, adjacent to the Country Hills Golf Club and the north Calgary residential belt near the Calgary International Airport approach corridor, a newer community at the boundary between the established north Calgary developments and the growing Skyview Ranch-Cityscape NE communities) draws from the Bow River Bearspaw plant supply. The Bow River carries dissolved Devonian carbonate from the Rocky Mountain Front Ranges, producing very hard supply throughout the Calgary system. At 244.5 mg/L, Hidden Valley is in the mid-range of the Bearspaw plant distribution.

At 244.5 mg/L, Hidden Valley homeowners face persistent scale challenges — monthly to bimonthly kettle and showerhead descaling is typical. Hot water tanks benefit from periodic inspection and flushing. The City of Calgary provides water quality information at calgary.ca/water. Health Canada lead precautionary guidance applies, though Hidden Valley's newer post-1990 construction features modern plumbing throughout.