The water in my city is not good. According to the EWG's Tap Water Database there are six contaminants above health guidelines. In addition to that my water also contains barium, fluoride, haloacetic acids and nitrate. Considering the drug epidemic in my area - I suspect that this 2015 test is missing contaminants. 

After installing this water filter I sampled the water slowly.. Finally, I can drink the tap water in my city. [This review was collected as part of a promotion.]