Researchers at Temple University are looking for families who drink water from a private well for a paid study. They are interested in keeping children safe from illnesses that can be spread by drinking water from private wells. Families will receive a free whole-home UV water treatment system (value of device + installation = $1,000). Families can participate from home. To be part of this NIH-funded study, families must have a child three years old or younger and live in Berks, Bucks, Chester, Lancaster, Lehigh, or Montgomery county.