YMCA in Durham reopens after hazmat leak hospitalizes 40 children

DURHAM, North Carolina (WTVD) -- A total of 42 people were hospitalized, including 40 children after a chemical leak in a pool at the Durham Downtown YMCA on Wednesday afternoon. Six of the children were in serious condition at the scene, but improved after receiving treatment, officials said.

Jonah Kaplan takes a look at what swimming pools are required to do to maintain safety and cleanliness.