Water Tank Maintenance

Industrial emissions and pollution in highly populated areas can reduce the quality of water harvested by your water tank, these factors you have minimal influence over. Regular maintenance to your water tank and the catchment area is an important process you can undertake to ensure the quality of your water you harvest is not compromised.

Implementing a maintenance program is the most effective method to ensure it is carried out regularly and effectively.

The water you conserve in your rain water tank comes directly from your roof. For the best quality water ensure that your roof, gutters and downpipes are clean at least every six months.

Filters and strainers should be installed and kept clean also.

Inspect your tank structurally ensuring the lid is firmly closed, repairing any holes or gaps. Check for evidence of access by animals, birds or insects. If there is evidence of algal growth, repair and ensure no light access.

Check piping to ensure they are firmly fastened and draining correctly.

The table below will assist you in implementing a maintenance program for the care of your water tank, controlling the quality of your harvested water.

How Often Required Maintenance
Every 3 months
  • If your tank has a pump – clean and check the operation of first flush devices
  • If your tank has a pump – remove the cover of the pump, clean leaf litter and dust
  • Inspect gutters as they are cleaned, if large amounts of debris are present, increase the regularity of your cleaning program.
Every 3-4 months
  • Clean screens and inlet points
Every 6 months
  • Clear leaf litter and other debris from your roof, check for overhanging branches to be pruned.
  • Check if animals, birds or insects have accessed the tank, especially in hot weather. If they have close access points.
  • If mosquito larvae is present contact the health section of your local council for advice on treatments
  • Check the inside of your tank for evidence of algal growth. If there is, close points of light entry.
  • Check the tank to see if any general maintenance needs to be undertaken, any defects or repairs to be made to the tank
  • If your tank has a pump – clean pump filters and strainers
  • If the pump is loose secure it.
  • Clean or replace water filters
Every 12 months
  • If your tanks has disinfection systems – replace UV lamps
  • If you have a below ground tank with mains back-up – get your local plumber to check your back flow prevention valves
  • Check structure of tank
  • Check that surface water does not enter during storm events
2 – 3 years
As required
  • Remove accumulated sediment from your tank
  • Check your water quality – if you notice a difference in the quality – get your local plumber to check it out
For more information on how to install a rainwater tank contact Perth Water Tanks
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