The Kalamalka Lake water source has been turned back on and is serving its regular Greater Vernon Water customers. Turbidity levels have returned to acceptable.
On April 22, 2020, the Kalamalka Lake water source was turned off due to increased turbidity. As there is no filtration at the Mission Hill Treatment Plant, this source is vulnerable to weather and other conditions that impact the lake’s water quality.
Turbidity started to increase because melting snow led to higher water levels in Coldstream Creek, which feeds into Kalamalka Lake. The quick-moving water stirs up sediment in the stream channel and lake bottom, causing less clarity and a reduction in water quality.