Home Natural Pool School What Are Chlorine Disinfection By-Products (DBPs)?

What Are Chlorine Disinfection By-Products (DBPs)?

Last updated on Mar 11, 2026

When chlorine is added to pool water, it reacts with organic matter such as sweat, skin cells, cosmetics, and other contaminants brought into the pool by swimmers. These reactions create substances known as disinfection by-products (DBPs).


Common Chlorine DBPs

Some of the most common by-products formed in chlorinated pools include:

  • Chloramines – responsible for the strong “chlorine smell” often associated with pools

  • Trihalomethanes (THMs)

  • Haloacetic acids (HAAs)

These compounds are created when chlorine reacts with organic material in the water.


Why DBPs Matter

DBPs can affect the comfort and air quality around a pool. In some cases they may cause:

  • Eye irritation

  • Skin irritation

  • Respiratory discomfort

  • Strong chemical odours

These effects are often more noticeable in indoor pools, where DBPs can accumulate in the air above the water.


How Origin Aqua Is Different

Because the Origin Aqua system does not rely on chlorine for disinfection, chlorine-related by-products are not produced in the water.

Instead, the system uses biological filtration and mineral enrichment to maintain luxuriously balanced pool water.