Reverse Osmosis Systems
Reverse Osmosis units are typically installed under the kitchen sink and provide you with a separate faucet for drinking water. The units typically have three filters and a membrane and can filter out a number of impurities. The most common are nitrates and lead; however, they can also remove nitrite, chlorides, and metals.
Having a reverse osmosis system is like having bottled water at your kitchen sink
These units generally need their filter replaced annually and the membrane every five years.