Effects of Chlorine Treatment

By disinfecting tap water with chlorine (sodium hypochlorite), safety is maintained so that it can be safely drunk.
Chlorine has a strong sterilization power against various bacteria and pathogenic bacteria, but the concentration contained in tap water does not affect health even if drinking tap water for a lifetime.

Chlorine remains in tap water, so the disinfection effect lasts and prevents the generation of various bacteria.

One of the test items to confirm the disinfection effect is "general bacteria", which is an index for grasping bacterial contamination in tap water.
The photo below shows the results of a general bacteria test in tap water and raw water.

General bacteria have been killed in tap water that has been disinfected and disinfected, but in raw water that has not been purified, white and yellow spots, which are lumps (villages) of general bacteria.

"General bacteria" in water quality standards are used as indicators for grasping bacterial contamination in tap water, and formed when 1 ml of tap water is cultured at 36 ± 1 ° C for 24± 2 hours using a specific medium. It is stipulated that the number of villages is 100 or less.