Ceramic candles used for water filtering and fitted inside of the steel tubler or pot for dfilter the water, and to get it bacteria free and these are made of various ceramic raw materials like china clay, Aluminia,Quarz,Feldsfar,and combustible materials. Among the two varities used (1) Candle which gives bacteria free water and (2)the other gives water free from suspended impurities. As per note of filteraion the candels are classified as domestic type and community type in which rate of filteration is 2 to 3 liters per hour and 6 to 7 per hour respectively. Interested enterpreneurs may contact MSMEDI, 111 & 112 B.T. Road,opposite ISI, Kolkata and central Glass & Ceramic Research Institue, P.O. Jadhavpur University, Kolkata,for technical Know how for manufacture candles for getting bacteria free water.