Posted Saturday, March 28, 2015
Greater Vernon Water (GVW) advises customers that the Kalamalka Lake water source was turned off on Saturday March 28, 2015 at 11:00 a.m. due to turbidity that can reduce the Ultra Violet Disinfection effectiveness at the Mission Hill Treatment Plant.
The Mission Hill Treatment Plant treats water from Kalamalka Lake with Ultra Violet Disinfection but does not have filtration; therefore the water quality can be vulnerable to changes occurring in and around the lake. The decision to turn off the Kalamalka Lake water source was based on increased turbidity from spring run-off, especially noted in Coldstream Creek and its affect on the intake in Kalamalka Lake. All water in the Greater Vernon service area will be supplied from the Duteau Creek Water Treatment Plant (DCWTP) to avoid issuing a Boil Water Notice to customers normally on Kalamalka Lake.
Customers who are not normally on the DCWTP water source may notice that the water is softer and the water has a low alkalinity and pH. This may be of interest to those customers who have in-home water treatment systems or aquariums.
Staff will continue to monitor water quality and notify customers of any further changes. Customers will be notified via radio, newspaper and the Regional District of North Okanagan website at www.rdno.ca when the Kalamalka Lake water source is turned back on.
For further information, please call 250-550-3700 or visit www.rdno.ca.
More About Turbidity
Turbidity results from the presence of tiny particles of clay, silt, or plankton in the water that scatter a beam of light, and is measured in Nephelometric Turbidity Units (NTU). Typically, a turbidity of less than 5 NTU is not visible to the naked eye.
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| Screen Shot Sat. March 28 at 2:55 PM |
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| Screen Shot Sun. March 29 at 8:55 AM |
More About Turbidity
Turbidity results from the presence of tiny particles of clay, silt, or plankton in the water that scatter a beam of light, and is measured in Nephelometric Turbidity Units (NTU). Typically, a turbidity of less than 5 NTU is not visible to the naked eye.
Greater Vernon Water has worked with IHA to determine customer alerts based on enhanced treatment at both the Duteau Creek and the Mission Hill Treatment Plants. Water Quality Advisories will be generated when turbidity rises above 1.5 NTU (24 hr average) for Duteau Creek WTP and above 3.5 NTU (24 hr average) on the Mission Hill WTP. CheckNotifications to find the turbidity index and alert level for your water source.
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| Screen Shot Sat. March 28 at 1:18PM |
Spring run-off forces change in water source for Greater Vernon customers
105.7 SUN FM Posted on 3/28/2015 by Adam Graham
Spring run-off has forced the closure of the water source coming from Kalamalka Lake. The Regional District of the North Okanagan says the run-off has caused an increased turbidity in the water coming from the Mission Hill Treatment Plant, which does not have filtration. Fortunately, the water in the Greater Vernon Service area can be supplied by the Duteau Creek Water Treatment Plant to avoid issuing a Boil Water Notice to customers normally on Kalamalka Lake. However, customers who are not normally on the Duteau Creek Water Treatment Plant water source may notice that the water is softer and the water has a low alkalinity and pH. This may be of interest to those customers who have in-home water treatment systems or aquariums. There's no estimated time as to when the Kalamalka Lake water source could be turned back on.
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