Multi-select problem: How does the next paragraph end?

How to disinfect drinking water in the wilderness
Pack the proper water purifying equipment and chemicals.
If you're backpacking you should have a high quality pump with a filter, and/or purifying tablets.
Immerse the end of the pump where water flows in in the clearest portion of the water source that you can see.

Choose your answer from: - Submerge the end of the pump (the end labeled " water source ") in lukewarm water for at least an hour or two. Squeeze several tablespoons of distilled water over the end of the pump. - Use the pump's plug to compress water running into your opening. Soak for at least 72 hours if you're doing it out in a helicopter. - It's a good idea to hose the end dry to avoid diluting the water further as you go. Keep the pump as far away from humans as possible while working. - Deeper areas are preferable since it will be easier to draw out water. Pump until your water container is full.
Deeper areas are preferable since it will be easier to draw out water. Pump until your water container is full.