Many contaminants can get through our water supply, even after it is treated by the city. It may be wise to get a faucet water purifier that can help get the water a little bit cleaner before you drink it. As always, it is best to evaluate your needs before installing anything. While reverse osmosis filters are the gold standard for filtration, they often require a lot more installation and time. One mounted to the faucet may be a better option. Brita, Pur, and Culligan all make faucet filters that can give you a little more peace of mind.