Water treatment

Water treatment is essential for ensuring the health and comfort of bathers, as well as the longevity of a swimming pool or spa. Although based on similar principles, water balancing and disinfection differ between swimming pools and spas due to variations in volume, temperature and usage. Poorly balanced water can cause skin irritation, reduce the effectiveness of the treatments applied, or damage the equipment. Understanding these parameters enables you to take effective action and prevent imbalances.

Why water treatment is essential

The water in a swimming pool or spa is constantly interacting with its surroundings. Factors such as temperature fluctuations, frequency of use, weather conditions and external inputs constantly affect its balance. The aim of water treatment is to ensure stable conditions that are beneficial for both bathers and the facilities.

To ensure your water remains pleasant and healthy at all times, here are the key parameters to monitor:

• There are several indicators used to assess water quality:
• The pH level determines how comfortable the water is for swimming and how effective the pool maintenance products are.
• The oxidation-reduction potential (ORP) reflects the overall effectiveness of the treatment.
• TAC (total alkalinity) acts as a buffer, stabilising the pH and preventing sudden fluctuations.
• Water hardness affects limescale build-up and the lifespan of the systems.

These parameters are closely interlinked; a change in one affects the others. That is why it is important to monitor them regularly to ensure optimal water quality.

Differences between pool and spa water treatment

• Although the fundamentals of the treatment are similar, the constraints differ:
  In swimming pools, high volumes require consistent quality over time.
• In a spa, the high temperature and small volume make the water more susceptible to fluctuations and rapid imbalances.

To ensure the water remains clean and pleasant at all times, it is essential to adjust the frequency of checks and the dosage of chemicals to suit each specific use.

How can you properly test the water in your swimming pool or spa and keep it balanced?

Regular water testing enables any deviations to be identified quickly and parameters to be adjusted in a targeted manner. Accurate measurements are the key to greater peace of mind: they prevent overdosing, ensure greater stability over time and help extend the lifespan of equipment, in both swimming pools and spas.

Further reading on water treatment

For further reading, Ondilo offers a wide range of educational content dedicated to each parameter:
A practical guide to swimming pool water treatment
Specific advice on spa water treatment
Understanding and adjusting the pH of your swimming pool or spa
Controlling the chlorine level
Stabilise the alkalinity (TAC)
Optimising redox potential
These resources help you develop good habits and gain a better understanding of how water works.

Key points

Effective water treatment relies on understanding key parameters and monitoring them regularly. Effective water management depends on tailoring treatment methods to the specific requirements of each application, whether it be a swimming pool or a spa, in order to maintain water quality in the long term.