High levels of chlorine in pools has been linked to asthma in small children. (mindbodygreen.com)
While the concentration of chlorine in swimming pools isn't dangerous for dogs under normal circumstances, it can still cause health issues. (pethelpful.com)
The parasite can be killed with chlorine bleach (ratio 1 cup of bleach for 1 gallon of water). (dog-health-guide.org)