Can you use two water filters,...?!
Answers:
actually, minerals do occur in water. Spring water comes from the ground , municipal water comes from a lake or watershed, each has trace minerals from their origin. Some minerals are good for you like magnesium, calcium and potassium. Some water companies actually filter their water then add some minerals back in for taste.
You CAN filter twice if you want, but it doesn't remove any more of the impurities you're trying to eliminate and only adds to the cost.
Nothing you need occurs naturally in water, except for the water itself. You can't over filter it.
B)
no you can't over filter the water.