While spaying is traditionally recommended for kitties between 4 and 6 months of age, spaying as young as 8 weeks old is considered safe, according to Cat Channel.
The national drinking water standards state that the maximum residual amount of chlorine is 4 mg/L. Untill recently the USA used chlorine gas extensively for wastewater treatment. Today, the use of chlorine has been forced back.
To keep bacterial, pathogens, and algae from growing in your water, the chlorine (sanitizer) level needs to be at a safe level for swimming. A chlorine test reading between 1.0 and 3.0 ppm is optimal. If you use bromine tablets instead of chlorine as the sanitizer, then the reading should be between 2.0 and 4.0 ppm.