On this page, you'll find all the information you need to understand the Water Index. How is it calculated? What are its colour codes?
What is the Water Index?
The Water Index, unique technology, patented by Ondilo, lets you see at a glance the quality of the water in your pool. It is displayed at the top left of the control panel.
This Water index summarises the balance between the healthiness and comfort of the water.
The calculation of this index is based on 4 parameters measured by ICO: pH, disinfection (ORP or Redox), conductivity (or minerality) and temperature.
How to read the water index colors
The Water Index has five colors. The color displayed in your bathing index is the result of the latest analysis of your ICO. It indicates the quality of your water.

The water index color code also applies to water parameters (Temperature, pH, Disinfection).
ICO will give you the recommendations you need to keep your water healthy, clear and comfortable, so that your Water Index stays crystal clear.
- light blue: optimal
Perfect water quality, so you can swim without fear.

- dark blue: satisfactory
The water quality is satisfactory, so you can go for a swim, but ICO will surely have some recommendations for you.

- yellow: poor
Water quality is poor, so it's best to follow ICO's advice before taking a dip.

- red : bad
The quality of the water is unbalanced, and swimming is strongly discouraged.

- grey: no measurements

More information on measures and customising thresholds minimum and maximum