Depending on what water source you use, if your using faucet water your food will be clean but not totally.
If your using a lake, ocean, bodies of water your food will not be as clean, water from bodies of water are full of bacteria, and other contaminants.That being said, using a faucet is your best bet or even try to clarify water from bodies can help.
I would say Recycling or using alternate power sources such as solar or wind
Make sure that Jeff wears the correct safety equipment. Some examples are a ski mask, gloves, and a winter jacket!
Medication for psychological disorders is generally prescribed by psychiatrists.