Bottled water is one sure way to calm your concerns over the purity or taste of tap water. However, installing an under-sink water-filtration system is a less-expensive solution. If you're new to plumbing, don't worry. The system's two components, a plastic filter and compact gooseneck faucet, are easy to install for novices.
Find guidance from TOH
plumbing and heating expert Richard Trethewey at How to Install a Water Filter