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.
At a point not more than 10 ft downstream from the beginning of the new main, water. entering the new main shall receive a dose of chlorine fed at a constant rate such that the. water will have not less than 50 mg/L and not greater than 100 mg/L free chlorine residual.