• Use the bark of maple tree to roll up into a funnel instead of bottles and bottle caps.
• Use a shirt or towel instead of the coffee filter.
• Use nuts, roots or grass as a filter.

Use the sedimentation method. When there is no means to filter the water, you can remove large particles by settling the water filter. Fill a bowl or jar with water and let stand for 1-2 hours. During sedimentation, heavier particles will sink to the bottom and lighter matter will float to the surface of the water.

• Remove any particles that are lightly floating in the water.
• To remove heavier scale, pour water slowly and gently into a clean bowl or jar. Stop pouring before the water has reached the bottom so that the heavier particles will remain in the container.

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Method 2 of 4: Treat the water with chemicals

1. 

   
   
   Clean water with iodine. Liquid iodine can also be used to kill pathogens in water, but many people dislike its taste. To clean water with iodine, simply fill the bottle with water and add a 2% iodine solution. Add 4 drops of bleach per liter of water and let stand for 30 minutes. advertisement

Method 3 of 4: Filter pollutants

1. 

   Use commercial water purification equipment. Commercial water purifiers are the easiest and most effective means of removing sediment, pathogens, metals and other contaminants from water. Water filters are made up of special materials such as coal, carbon, ceramic, sand and fabric that are specifically designed to filter harmful pollutants. There are many types of water purification equipment you can use, including:
   • The upstream water filtration system will filter all water supplied to the house.
   • The point-of-use water purifier attaches to certain taps and filters water coming out of the tap.
   • Benchtop water filters are manually filled with water
   • The water tank and the straw have a water filter attached
   • Handheld UV water purifier works to kill bacteria, viruses and other contaminants used to treat small amounts of water.

2. 

   
   
   Filter pathogens with pine trees. Some plants are very good at removing pathogens in the water, and pine is one of the most effective. You can break a few pine branches to kill bacteria and viruses in the water. Peel off the pine branches and place the bare branches in the bucket. Slowly pour water into small jets of pine branches to flow into the bucket.
   • When water flows to the sap inside the branches, the sap filters and collects the water pathogens.

3. 

   Get rid of heavy metals with coriander. Similar to pine, coriander is also very effective at removing heavy metals from water. Fill the jar with water and add a handful of cilantro. Stir the water and let the cilantro stay in the water for at least 1 hour. Remove the discarded coriander before drinking the water.
   • Cilantro has been shown to remove lead and nickel from water, but has not been proven effective against other heavy metals such as arsenic and mercury.

4. 

   
   
   Water distillation by solar energy. Distillation is an effective way to remove many impurities in water, including heavy metals, pathogens, salts, and even radiation. You can make your own solar water distiller to capture and store groundwater. You only need a pot to collect water, a shovel and a piece of plastic cloth.
   • Solar water distillers are most effective in wet soils to capture a lot of water vapor.
   • To avoid removing the jar, you can insert a straw or a hose into the bottle.

5. 

   Use SODIS method. SODIS stands for solar water disinfection (water disinfection by solar energy). When done properly, it is a very effective method for killing pathogens in water. Pour water into a clear and smooth water bottle. Tighten the cap and lay the bottle down in direct sunlight for 6 hours to kill parasites, bacteria and viruses in the water.
   • This method is effective because the plastic material takes the role of collecting heat from the sun transferred to the water bottle, and UVA rays help sterilize the water.
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