Guidance on use of rainwater tanks

Chlorination

Page last updated: March 2011

Rainwater collected in tanks is usually soft, clear and of good chemical quality.

Water filters should not be necessary as a method for maintaining microbial, chemical or physical quality of rainwater. If problems occur, the preferred approach is to instigate remedial action to prevent contamination (as discussed above) rather than installing a system to treat symptoms of inadequate maintenance.

If water filters are installed, they should be maintained to manufacturer’s specifications to avoid problems associated with microbial growths on the filters.