Crystal-clear, Safe Tank Water — Chemical-free Ozone Treatment in Warkworth & Rodney

Ozone tank water treatment uses ozone (O₃) — a form of oxygen with three atoms instead of two — to purify your stored tank water by oxidising and destroying contaminants such as bacteria, viruses, odours, and dissolved metals. It treats the whole tank volume, not just the water at the tap.

This technology has been used globally for decades and is now applied to tank-water systems in New Zealand. 

Yes — when properly designed and installed. After treatment, ozone reverts back to oxygen, leaving no harmful chemical residues behind. In New Zealand, this method is recognised and complies with the relevant drinking-water standards.

The system can treat rainwater tanks, bore/spring systems, and even delivered/catered tank-water supplies. It works effectively for many local conditions around Warkworth, Rodney and North Auckland — including removing smells, metallic tastes, heavy metals and organic contamination.

It helps with:

• Bacteria, viruses and other pathogens

• Odours (e.g., hydrogen sulphide “rotten egg” smell)

• Colours and turbidity (cloudy water)

• Dissolved metals such as iron and manganese

• Organic compounds (tannins, leaf-matter, roof contaminants)
  Ozone is highly effective in these areas compared to many conventional treatments.

Unlike chlorine, ozone leaves no chemical taste or odour residue, and no long-term by-products.

Unlike UV, which treats only flowing water through a chamber, ozone can treat the entire stored volume of your tank — improving overall water quality.

Because ozone oxidises a wider range of contaminants (not just microbes), it offers broader improvement (taste, clarity, metals) than some singular technologies.

Maintenance is relatively low compared to chemical dosing systems. Typical ongoing costs include periodic system checks, cleaning of diffusers/filters in the tank, and electricity to run the ozone generator (which is modest). The exact cost depends on your tank size, water source and local conditions in Warkworth/Rodney.

If the ozone generator is not running, your tank will no longer be continuously treated by ozone. While stored water remains, you will lose the active purification benefit until power is restored or the system is reactivated. For this reason, properties with unreliable power supply or off-grid setups may require a backup plan (e.g., supplementary UV or filter system).

Often yes — depending on your water source and quality, we may recommend a pre-filter (to remove sediment or larger particles), activated carbon (for taste/odour), UV treatment (for residual disinfection), or a combination system. At Aqua Works, we’ll assess your entire setup in Warkworth/Rodney and tailor a solution accordingly.