For almost 100 years, chlorine has played a vital role in public health as a disinfectant in treated drinking water. Cited as one of the "most significant health advances of the millennium," chlorine disinfection and filtration helped to virtually eradicate typhoid in the U.S. earlier in the 20th century. Today, it continues to be an effective safeguard against pathogens.

In WaterOne's treatment process, chlorine output is controlled electronically with precise and continual tracking so the level is consistent with optimal health and safety standards. WaterOne specifically uses chlorine dioxide and monochloramine to control trihalomethanes (THMs), a substance that at levels above EPA limits has demonstrated carcinogenic activity in laboratory animals.

Public safety is our priority. If WaterOne detects harmful substances in the water supply, we are required by law to notify the public. To ensure we reach you with important information about water quality and your water service, sign-up for Notify JoCo.