The Municipality of North Grenville provides clean, safe drinking water within Kemptville and to designated subdivisions by delivering approximately 1,800 cubic meters of water a day (395,933 gallons/day) to approximately 4,000 customers and local industries.
The North Grenville water supply system consists of 3 separate groundwater wells located within the urban core (Kemptville). Water is treated at the wellheads with sodium hypochlorite (disinfection) before it enters the distribution system. Each disinfection system consists of two sodium hypochlorite metering pumps with automatic emergency switch-over, chlorine analyzer with data link, in-line turbidity analyzer and a chemical storage tank c/w spill containment. The pump stations also have automatic high lift pump lockouts for all pumps in the event of a problem.
The system supplies water and services to approximately 4,000 customers and local industries. Each well has an on-site reservoir. The total reservoir capacity of all three wells is 2,772 m³ (609,754 imperial gallons). The Municipal water system currently delivers approximately 1,800 m³/day or 395,944 imperial gallons per day (gpd).
The operation and control of the water system is performed by a state of the art SCADA (System Control and Data Acquisition System). The SCADA system monitors the entire water supply 24 hours a day 7 days a week.
The distribution system consists of approximately 35 kilometers of various size (100mm, 150mm, 200mm and 300 mm diameter) water mains. The distribution system is constantly being upgraded and expanded as necessary. The system is looped so as to minimize service disruptions due to emergencies and maintenance.
Water Main Flushing Program – Each year, the water mains are flushed to remove sediment and maintain high quality drinking water. Residents will be advised when water main flushing is due to occur (every spring and fall).
Water Meter Replacement Program – The Municipality will be replacing water meters over the next four years.
Backflow Prevention Program – Backflow is the undesired reversal of water flow against normal direction. Backflow can occur as a result of back pressure which is when the pressure in a private water system, such as a house, is greater than the pressure in the Municipal system. It can also occur as a result of back siphonage which is when there are dips in pressure in the Municipal system (i.e. a water main break). The Backflow Prevention Program outlined in requires all water connections to be outfitted with a backflow preventer in order to ensure the protection of the drinking water supply.