Rainwater Tanks and Pumps
Will the rainwater in my tank remain fresh?
While rainwater has always been a dependable source of domestic water supply in rural and regional Australia, there has been a steady uptake in the use of rainwater in urban areas from simple garden watering systems to more sophisticated household reticulation systems.
While there is versatility in the uses of rainwater, there is also a corresponding risk as the collection and storage of rainwater introduces the potential for chemical, physical and microbial contamination, particularly after rain events that follow long dry spells.
Good system maintenance will ensure freshness
The good news is that in most cases roof catchments, guttering, piping and rainwater tanks are relatively simple systems, and by building the appropriate defences and implementing a sensible maintenance programme, you can ensure the freshness of the rainwater in your tank.
The keys to fresh water are as follows:
+ Minimise debris entering the tank
+ Keep out unwanted visitors
+ Drain water from pipes to eliminate anaerobic fermentation
+ Periodically clean out the water tank
+ Keep your filters clean
Disinfectant treatment is an option
If your tank water has been unused for a while and you are concerned about using it, a disinfectant treatment is a good idea. Tank water disinfectant is a tasteless, odourless and safe alternative to harmful chemicals such as chlorine, and can kill up to 99.9% of all germs, bacteria and viruses in stored water. Unlike chlorine which dissipates quickly, tank water disinfectant has a residual effect and will protect water for up to 2 months after application.