Health Services Information Sheet 34
Rainwater Tanks
Many people prefer to use rainwater; for bathing, in the laundry; for flushing toilets, in the garden and drinking. Some people say that rainwater can reduce water bills, helps protect the environment (reduce stormwater run-off), ease the demand on our precious water supplies and tastes better than scheme drinking water.
You should be aware that if you choose to collect rainwater for drinking, there may be an increased risk of pollution by airborne pollutants and micro-organisms (bacteria) that can cause gastroenteritis. It is not recommended for rainwater to be used for drinking if it has been collected in areas affected by airborne pollution from heavy traffic and industrial activities.
If the rainwater is not clear, has an odour or taste, then it may not be safe to drink. Ways to make the rainwater safe to drink can be through chlorination or boiling the water for several minutes. Filters can also assist in reducing sediment and organic matter provided they are well maintained and replaced on a regular basis. Ensuring the rainwater tank is well maintained can also be beneficial.
Further Information
Water Quality Branch
Environmental Health Directorate
PO Box 8172
PERTH BUSINESS CENTRE WA 6849
Telephone: (08) 9388 4999
Facsimile: (08) 9388 4955
http://www.public.health.wa.gov.au
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