The drinking water at CIS is from the Cayman Water Company Ltd. This is the same water company that supplies water for all residences, hotels, business, doctor offices, dental clinics, etc. from roughly Marbel Drive (near St. Matthew’s University Residence) to West Bay.
Water on Grand Cayman Island, unlike many other places in the world, is not drawn from lakes, rivers, or reservoirs, thus island drinking water is not affected by groundwater. The water comes from the desalination plants on Grand Cayman Island.
The drinking fountains at CIS are all individually filtered, and the filters are changed on a regular basis.
The DEH (Department of Environmental Health) conducts additional tests on our water annually. This is beyond the regular monitoring by the Cayman Water Company.