How Safe Are Rainwater Tanks?

Rainwater Tank Safety:

You might think that collecting nature’s gift of hydration from the heavens above might be safe to drink, right? Well your wrong, the untreated rainwater is not safe for human consumption. However, many parts of Australia drink rainwater as they prefer it to municipal water or because they are in remote locations where rainwater is their primary source of water. Several studies identified high levels of metals such as lead, zinc, copper and cadmium were found in collected rainwater around the country.

Metals aren’t the only problems found in rainwater tanks though, another big concern is the amount of microorganisms and bacteria discovered inside rainwater tanks. The bacteria that strives inside rainwater tanks and the toxic traces found from roof runoffs can cause serious illness to humans if consumed.

rain water roof

The main contaminants that are found in rainwater tanks are bacterial microorganisms such as E.coli that cause gastrointestinal illnesses. These microorganisms are found in faeces from animals such as possums and birds, which are commonly found in roof catchments that run down to the rainwater tank. Poorly maintained rainwater tanks have also been known to be breeding grounds for disease spreading mosquitoes; a great way to protect the rainwater tank from this infestation is to cover the inlet and outlets of the tank are secured with mesh screen.

Rainwater tank safety is vital for anyone consuming the water or even using it on their body. The safest thing to do with rainwater is to have it filtered through one of our Rainwater tank filter systems, the filtration procedure will ensure that the water is safe to drink as long as the system is maintained correctly with annual filter and UV lamp replacements.

Our Rainwater tank filter systems are an excellent way of filtering and eradicating contaminants such as metals and 99.99% of all microorganisms and bacteria. This is achieved through the different filtration stages and the ultraviolet light sterilization process. Our top of the line rainwater filter system RWTF4 has 4 stages of filtration including the UV sterilization stage; it is the ultimate filtration system for you and your family.

With all this being said it is very important to maintain a healthy rainwater tank, CSIRO suggest the following steps to ensure the highest rainwater tank safety:

  • Every three months: Check your gutters and clean to avoid faecal matter being washed into your tank. Gutter mesh can help limit what ends up in the tank
  • Every three months: Check your tank’s mosquito mesh is in good repair to limit disease-carrying insects and other vermin getting into your water
  • Every six months: Check your water quality, looking at the colour, smell and level of sediment
  • Every six months: Check your pumps and pipes are all intact and functioning
  • Every two years: De-sludge. It’s recommended you use a qualified contractor to remove the sediment that builds up in water tanks

water tank health tips