One concern, Kong said, is that chlorine and ultraviolet light in combination can create disinfection byproducts, including ...

Chlorine plus UV light degrades toxins caused by harmful algae blooms. ScienceDaily. Retrieved June 11, 2025 from www.sciencedaily.com / releases / 2025 / 02 / 250219154656.htm.

There's chlorine in your drinking water, America. Or maybe there's a different chlorine compound called chloramine. This isn't meant to alarm you, though of course it's alarming to many.

Researchers say chlorine in combination with ultraviolet light works to degrade deadly toxins created by harmful algae blooms in drinking water.