Chlorine to purify water can lead to cancer if used excessively and continuously. In many countries, chlorine has started to be abandoned and replaced by other, more secure technologies such as ultraviolet. To maintain the bacteriological quality of the tissue farthest, chlorine needed just as much as 0.2 ppm.
In the pool we can also feel the chlorine that is too high can cause skin irritation especially if we drink it and enter the digestive tract. Chlorine are carcinogenic that can cause cancer.
The use of chlorine can not be replaced just by one method, but it has to combine various methods of water purification for the results in order to more secure. Water purification method that can be combined is a reverse osmosis (RO). This method is considered the most economical and able to remove 90-99 percent of contaminants, including bacteria and organic material larger than 300 daltons. But because it involves membranes that are very tight, this method produces a slow flow rate. This limitation makes RO method can not treat water in large amounts, so it should combined with other methods.
