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.
You generally want to maintain a level of 1 â 3 ppm (parts-per-million) of chlorine in your pool, although for commercial pools they generally need a level of 3 â 5 ppm. The low limit of 1 ppm is important, as levels less than 1 ppm are not effective at keeping the water sanitized. Because of this, experts often recommend you keep your residential chlorine level at 2-3 ppm. The diagram below shows where your home swimming pool chlorine level fits in a chlorine range of 0 â 10 ppm: