25 May 2008
Now that you have collected your rainwater, what now?
You live in the city and have put a lot of money and effort into installing a rainwater harvesting system, now what are you going to do with the water? The answer is, whatever you can.
One of the simplest a most effective uses for your collected rainwater is to use if for flushing your toilet. Toilets are responsible for using around 10% of the water used in your home, and depending on overall household water usage, this can be around 25 - 35 litres per day, or 9000 - 13000 litres per year.
But, for the water to be connected to your toilet cistern you will need to have a back up system in case your water tank level gets too low. Products such as the Davey Rainbank and the OngaWaterswitch are the answer.
Both products are connected to the pump which sends the water to your toilet cistern. When the water level in your tank gets too low, the Rainbank and Waterswitch sense the low water level and divert the water supply source from your rainwater tank, to the mains water. After rainfall and your tank has filled again, either unit will sense that the water level in your tank has increased and will switch back to your water tank to supply the toilet cistern.
This ensures that you will always have a water supply to fill your toilet cistern, but ensures that whenever possible, it will come for free from your rainwater tank.