What is Chlorination?

Chlorination is the process of adding chlorine to drinking water to disinfect it and kill germs. Different processes can be used to achieve safe levels of chlorine in drinking water. Chlorine is available as compressed elemental gas, sodium hypochlorite solution (NaOCl) or solid calcium hypochlorite (Ca(OCl)2. While the chemicals could be harmful in high doses, when they are added to water, they all mix in and spread out, resulting in low levels that kill germs but are still safe to drink.

Are there any health issues associated with Chlorine?

Current studies indicate that using or drinking water with small amounts of chlorine does not cause harmful health effects and provides protection again waterborne disease outbreaks.

What are safe levels of Chlorine in drinking water?

Chlorine levels up to 4 milligrams per liter (mg/L or 4 parts per million (ppm) are considered safe in drinking water. At this level, no harmful health effects are likely to occur.

For more information regarding disinfection with Chlorine visit:
CDC Website