How does one select a water filter?
Step 1: Understand raw water quality. Find out the contaminants in water, its hardness and its total dissolved solid contents. Also find out if the water has heavy metals, pesticides or any other chemical
Step 2: Find out what is the desirable water quality? Refer to IS 10500:1991 specifications for drinking water quality published by the Bureau of Indian Standards. This is under revision
Step 3: Ascertain the best technology to remove contaminants in your water? Find out which purifier is the best for the purpose
Step 4: Understand capital costs, benefits and limitations of these purifiers
Step 5: Understand operational costs and maintenance aspects of purifiers
Step 6: Asses the amount of water wasted by the filter and the mechanisms to deal with these
Step7: Verify all claims made by the purifier manufacturer