Comparative examination of three main sources of water supply in Independence layout Enugu was carried out with a view to determine their levels of contamination of bacteria. The sources of water examined are tap water, well water and stream water. The pour plate method was used to examine the water samples. Bacteria isolated from the water samples include coliforms especially Escherichia coli. Stream water and well water were found to contain bacterial isolates unlike the tap water that has none.

Following the theory of creation, it is clear that water is as old as man. From time immemorial, man has restorted to the use of this unique commodity for domestic and other purposes.

Most of our water supplies are from surface water which include: rivers, streams, lakes, oceans and seas and there water bodies are likely to be polluted with domestic and Industrial as well as agriculture waste, As populations increase, the problem become more serious and as such, water can endanger the health and life of human beings because when polluted by fecal materials it becomes potential carrier of pathogenic organism (Carpenter, 1977).

Water, is of course, absolutely essential to life, not only human life but all life, animal and vegetable. Most of the biochemical reaction that occur in metabolism and growth of living cells involved water, and all take places in water. (Camp et al,1974).