Here in the desert, I consume a lot of water. I installed the Raintree under sink filtration system, which supposedly filters out everything. I'm an engineer and know too well about system failure. So, I use the Raintree tap for washing fruits and vegetable and for filling my 10 cup Life Straw pitcher for drinking water. I feel pretty confident that the water I drink is NTM free, Note: 10 cup pitcher may be too big for some refrigerators. When I'm travelling, I buy Spring water and bring my LifeStraw water bottle.