The safe levels of chloramine in drinking water are typically regulated by government agencies such as the Environmental Protection Agency (EPA) in the United States.
The EPA sets a maximum contaminant level (MCL) for chloramine in drinking water of 4 milligrams per liter (mg/L), which is the highest level at which chloramine is not expected to cause any adverse health effects.
It’s important to note that this MCL is a guideline and not a strict limit, and water utilities may choose to maintain lower levels of chloramine in their water if they feel it is necessary. It’s always a good idea to check with your local water utility to find out the specific levels of chloramine in your area.
Although EPA regulatory agency has set the maximum safety standard for the amount of disinfectant in your drinking water at 3 to 4 parts per million or 4 milligrams per liter (mg/L)it is not truly known whether it is safe or not.
The number of cancer cases that can be traced back to these chemicals indicates that there may be no “safe” level.