Cyclone / Flood advice for your Bore and Pump
For insurance related information on your bore or pump, please see below.
Before a potential flood:
Your Bore: If the area surrounding your bore is prone to having water accumulate in a flood event, then it’s best to act now.
Inspect the top of the bore casing and make sure there is a good seal around the hole in the cap where the poly pipe(s) go into the bore casing. If there are large gaps (more than 3mm on each side), use a wet area sealant to fill in the gaps. If that is not available, do your best to stuff a rag into the gaps all the way around.
If you don’t have a bore cap at all, it’s best to get duct tape and go nuts sealing that PVC casing off! Afterwards, contact us to get a replacement bore cap and a free bore appraisal so you are prepared for next time.
Your Pump: Look to see where your surface pump is, if it’s likely to get covered (even partially) by flood waters, lift the pump up. The best way is to put a Besser block or bricks under the pump. All pumps directly above the bore casing will lift straight up; it may take two people to complete this task but you could lose thousands if you don’t act.
During Flood event:
If you can see or hear water leaking into your bore casing, or you can see the bore casing is completely covered by flood waters, the best thing is to turn the pump on and pump that water out ASAP. Obviously, if you are experiencing a cyclone, don’t go outside. Just remember, if your pump is under water, don’t turn it on!
Run the pump and discharge the water into a functioning drain for as long as the water is covering the bore casing.
If all the drains are backed up, don’t run the pump, this will make the flood worse. As soon as the flood waters drop below the level of the casing, run the pump and pump the surface flood waters out of the bore. We need to protect our precious aquifers as best we can.
After the flood, cleanup:
Bore water should not be used for drinking or food preparation following flooding.
If you suspect the bore was underwater, it's best to disinfect the water in the bore, the following disinfection procedure is recommended:
Add 15 grams of dry pool chlorine per 100 litres of bore water. A 4” bore casing has approx. 10L per metre, if your bore is 10m deep, add 15g of dry pool chlorine. Leave it in the bore for 4 hours then turn the pump on but put the outlet hose back down into the casing, creating a loop. Pump the water back into the bore for 30 minutes then take the outlet hose out and continue to pump the bore water onto grass or down the drain for 2 hours.
If there is any sign the pump went under water (or the control box if you have a submersible), then DO NOT USE IT! Call us ASAP 0418 193 194 to arrange for a free pump inspection. See the insurance section below if you can claim it.
If you know the bore went underwater but but your pump (or control box) did not, then at the very least, run the pump for 3-4 hours once the water has subsided to clean out the introduced flood waters. The bore water may be discoloured from flooding or just from the amount of rain entering the aquifer over the last few days.
We can arrange for the bore water to be tested for a fee.
If your pump got flooded/submerged/inundated, we can inspect the pump and provide a document stating the pump was damaged in the flood thereby allowing you to claim this on your insurance. We can also supply and install your new pump. Please call us for a full quote on your replacement pump.
Please ask your insurer if you bore is insured as it may be necessary to drill a new bore due to the amount of damage the flood waters caused. We can provide a quote for the replacement of your bore.
If you continue to have concerns about the quality of your bore water, or you have questions about insurance, or you would like more advice specific to your bore, please contact us at firstname.lastname@example.org or call 0418 193 194.