Saltwater Intrusion and How to Prevent It.

Overuse of groundwater from our aquifers can cause saltwater intrusion, particularly during prolonged dry spells and particularly on smaller islands like Thetis and wells close to the shoreline. All of the fresh water in our aquifers comes from the precipitation that falls and percolates into the ground in close proximity to where we pump it out. Once an aquifer is contaminated by salt water, it can take (many) years for it to flush the salt out.
Things to do:
Consider a brown lawn as a badge of honour. Replace "thirsty" plants with native and drought tolerant alternatives. Use captured rainwater for all of your landscape wateringIf it's yellow, let it mellow. Create a "culture of conservation" since climate models suggest that our summers are only going to get longer, hotter and drier in the years to come. Fix any leaks, drips or running toilets immediately. A 1 gallon per minute leak can waste 1,440 gallons of fresh water per day. A single hose running full volume can take 300 gallons of water out of your aquifer every hour! And thousands of gallons can be removed in only 12 hours by a single sprinkler.
For more information, please feel free to contact me.
David Slade
Retired Well Driller and past president of the BC Groundwater Association
dslade@telus.net phone 250-732-0256