What level of chlorine is considered safe for drinking water according to most standards?

The level of chlorine that is considered safe for drinking water, according to most standards, is 4.0 mg/l. This concentration is set to ensure effective disinfection while minimizing any potential harmful effects on human health. Chlorine is commonly used as a disinfectant in water treatment processes to eliminate pathogens and maintain water quality. Regulatory bodies, such as the U.S. Environmental Protection Agency (EPA), have established guidelines that recommend a maximum residual disinfectant level of 4.0 mg/l to ensure that water remains safe for consumers and does not pose health risks associated with high concentrations. It balances both safety and efficacy, making it the appropriate choice for drinking water quality standards. Lower levels, such as 0.2 mg/l, may not provide sufficient disinfection, while levels of 10.0 mg/l and above can lead to undesirable taste and potential health risks.