Frequently Asked Questions...

We recommend sterilising your tank every 6-12 months to maintain safe, healthy water year-round.  

We use KIWIOXIDE®, a chlorine-dioxide based disinfectant that complies with WHO guidelines. It eliminates harmful microorganisms, biofilm, and contaminants in your tank, ensuring clean, safe water.  

KIWIOXIDE® works faster, more effectively, and more safely than traditional methods like chlorine or bleach. It eliminates bacteria and biofilm, neutralises odors, and leaves no residue behind.  

Yes! After treatment, your water meets WHO drinking water standards. For best results, wait 12-24 hours before consuming, to allow complete disinfection.  

No, KIWIOXIDE® is safe for plants, livestock, and pets (fish excluded). Once treated, the water is free from harmful residues.  

Yes, rainwater often carries contaminants like bird droppings and debris. A filtration system removes sediment and bacteria, ensuring your water is safe to drink.  

We recommend changing your filters once a year. If they clog more frequently, it may indicate an issue with your gutters or tank that needs addressing.  

A UV system sterilises water by neutralising harmful microorganisms, ensuring safe, pathogen-free water from every tap.  

While not essential for everyone, a UV system is highly recommended for households with vulnerable individuals, such as newborn babies, the elderly or immune-compromised people.

A pre-tank filter is installed between your roof’s downpipes and your water tank. Rainwater first passes through a coarse mesh basket to trap vermin and large debris like leaves and twigs. It then moves through a much finer filter membrane that removes particles such as silt and pollen, letting much cleaner water enter your tank.

Prevents debris, silt, and pollen from contaminating your tank water. It blocks birds, rodents, and other pests from accessing your tank. It reduces servicing costs - removing the need for frequent tank cleaning - a pre-tank filter can remove the need to clean your tank for up to 7+ years. 

Yes! RAINMAN® pre-tank filters are compatible with all plastic and concrete tanks. Our team can adjust your tank’s spouting and access points for a secure and seamless fit.

RAINMAN® can service your pre-tank filter every three months, providing a brand-new filter membrane each time for optimal performance.

An unmaintained pre-tank filter will clog, leading to overflow and preventing rainwater from entering your tank. Additionally, any trapped birds or vermin in the filter can rot, contaminating incoming water. Regular maintenance is crucial to avoid these issues and ensure your rainwater system functions smoothly.

We recommend cleaning and inspecting your filter every three months. Regular maintenance ensures the filter works efficiently and prevents clogging or overflow.

With annual sterilisation, most tanks only need cleaning every 3-5 years. Installing a pre-tank filtration system can extend this to 5-7 years.  

Bad smells, discolored water, or visible sludge in the tank are clear signs it needs cleaning.  

Yes, our process is designed to conserve water, making it ideal for drought-affected areas.  

Our advanced vacuum cleaning system removes sludge and debris while retaining most of your tank’s water. We then filter and sterilise the remaining water.  

We avoid entering tanks to prevent contamination, but for underground or complex designs, careful entry may sometimes be necessary.  

Yes, we’re experienced in cleaning all tank types, including underground systems and those in hard-to-reach areas.  

This standard sets out best practices for maintaining safe drinking water from rainwater systems. We ensure our treatments comply fully with these guidelines.  

Yes, we align with WHO guidelines to ensure your water is clean, safe, and free from harmful contaminants.