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.
The number specifically designated for "vendors" or medical staff. It won't be the regular customer service number. That number is for the members or those carrying that particular insurance.