Water is scarce in India and much of what water there is, is badly polluted. Surface wells are polluted as seasonal rains wash trash and disease into surface “bore wells”. Animals often wade into the water source polluting it with feces and standing pools of water breed mosquitos. Many children die each year from water-borne illnesses. We teach the Indian nationals to build water filter systems from common materials found in every country (i.e. sand, gravel & cement).