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    				| 1. | Methods for the treatment of water to make it potable | 
| Answer» Answer: Explanation: When reverse osmosis is not available, there are 4 water PURIFICATION methods that you can use to make your water safe for drinking. 1 – Boiling. Boiling water is the CHEAPEST and safest method of water purification. ... 2 – FILTRATION. ... 3 – Distillation. ... 4 – Chlorination. | |