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.
In a traditional pool, if you had low levels of chlorine you would have to add the chlorine and add additional cyanuric acid to protect the added chlorine. Low levels of chlorine in a traditional pool are about 3 to 10 ppm, whereas saltwater pools can function with .5-1 ppm of chlorine. With the traditional pool you are likely to add about a pound of stabilizer with every two pounds of chlorine.