First, it is important to ensure that the concentration of chlorine dioxide in the water is within safe limits. The US Environmental Protection Agency (EPA) has set a maximum contaminant level (MCL) of 0.8 milligrams per liter (mg/L) for chlorine dioxide in drinking water. This level is considered safe for most people to consume on a regular basis.

Second, it is important to ensure that the chlorine dioxide is not reacting with other chemicals in the water to form harmful byproducts. When chlorine dioxide reacts with certain organic compounds, it can form disinfection byproducts (DBPs) such as trihalomethanes (THMs) and haloacetic acids (HAAs), which have been linked to health risks such as cancer and reproductive problems. Therefore, it is important to monitor the levels of DBPs in the water and take steps to minimize their formation.

Finally, it is important to note that some people may be more sensitive to chlorine dioxide than others. People with certain medical conditions, such as asthma, may be more susceptible to respiratory symptoms when exposed to chlorine dioxide. Therefore, it is important to consult with a healthcare professional if you have concerns about the safety of chlorine dioxide in your drinking water.