The use of biological index of pollution (BIP) in assessing quality of rural water sources in Zaria, Nigeria
The biological index of pollution (BIP) which hinges on the responses of aquatic biota to pollution of water sources was used to assess the quality of some water sources in Zaria area, Nigeria. Water samples were collected from 15 stations comprising three open water sources (lakes) and twelve hand-dug wells on a monthly basis for a period of 24 months. Ten liters of the samples from wells were concentrated to 50 ml by filtering through 70 meshes per cm2 plankton net. Collections from the lakes was by means of dragging net over a 3 meter distance in the water.