Yes. The U.S. Environmental Protection Agency (EPA) limits the amount of chlorine in drinking water to levels that are safe for human consumption. The levels of chlorine used for drinking water disinfection are unlikely to cause long-term health effects.
During water treatment, chlorine can combine with naturally occurring organic matter in the water to form compounds called disinfection byproducts (DBPs). DBPs can cause negative health effects after regular, long-term exposure.
The EPA has set limits for several types of DBPs. All public water systems that disinfect must regularly test their treated water to measure levels of regulated DBPs. If they are above the limits set by EPA, the water system must take action to reduce the DBPs. This action includes notifying all of their customers of the DBP levels.