Effect: Can cause irritation to the skin and eyes and may contribute to digestive issues if consumed in large quantities. Chlorine is added to water for disinfection but has a relatively low evaporation point, which means it can dissipate quickly. To ensure that chlorine remains effective during transportation and storage, ammonia is often added to form chloramine. Chloramine has a higher stability, allowing it to stay in the water longer, both during transport and in water reservoirs. This is why shower steam is worse than drinking water directly.