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.
removal of residual chlorine generating unpleasant odor and taste in tap water, in order to encourage utility customer to use tap water as drinking-water. Three experiments on the removal of residual chlorine in tap water were carried out in this study as follows: 1) Chlorine removal by solar radiation (UV), 2) Chlorine removal by activated carbon filtration, 3) Chlorine removal by aeration at various temperatures. Free chlorine concentrations greatly decreased from 1.59 to 0.09 mg/L for sample #1 (S1)