Excellent at bringing down the dismal numbers for our water. I also have a Brita and was shocked at how poor the results are compared to ZeroWater! I only use Brita for water I know I’m going to boil anyway (like pasta or tea). ZeroWater filters need to be replaced frequently (I always know without even testing, because the water starts to taste very lemony),, but the expense is worth it to us because the water quality is amazing!
It really works as advertised! Shipping was fast and free. This is the second box of 12 I have purchased. They last over 30 days even when used daily. Tried the water without using the filter and it confirmed that they work.