Keep the water free from pathogenic (harmful) bacteria.
Keep the water free from growth of algae.
Ensure the water is neither toxic nor irritating to swimmers.
Prevent the formation of undesirable smells or taste in the water.
Prevent corrosion of the pool surroundings.
Prevent scale formation in the pool.

Water disinfection is one of the key treatment steps for all types of swimming pools, whether public or private. Efficient water disinfection is essential for pools. In order to ensure safe bathing water, most public facilities must follow strict water disinfection standards and practices.

A proper balance of the water chemistry factors will provide water that will not damage pool components and is non-irritating to swimmers. It is then necessary to provide for disinfection of the water to prevent the spread of disease organisms from person to person and prevent unwanted growth of bacteria and algae in the pool.

After filtration and pH correction the microorganism must be killed or inactivated. The most common practice choice for sanitation is chlorine, UV-light and ozone treatments are effective sanitizers.

A proper balance of the water chemistry factors will provide water that will not damage pool components and is non-irritating to swimmers. It is then necessary to provide for disinfection of the water to prevent the spread of disease organisms from person to person and prevent unwanted growth of bacteria and algae in the pool.

Organic contaminants not captured by the filter must be eliminated before they react to form DBPs (Disinfection Byproducts). Chlorine, ozone and UV all work to varying degrees to break down chemicals and some recirculated DBPs in pool water.

A proper balance of the water chemistry factors will provide water that will not damage pool components and is non-irritating to swimmers. It is then necessary to provide for disinfection of the water to prevent the spread of disease organisms from person to person and prevent unwanted growth of bacteria and algae in the pool.