Ineffective Amway eSpring Filter, Increased TDS Following Replacement
For almost 5 years, I've been using the Amway eSpring water filtration system at home. I change the filter every year. Y...esterday, it was time to change the filter again, so I decided to take a TDS meter reading. First, I tested the tap water, which indicated 380 ppm (undrinkable). Then I measured th