This study was carried out to solve problems associated with low groundwater pH encountered by poultry farmers in Owerri which results to bird mortality and low production of eggs and meat. Groundwater samples from different areas in Owerri were collected for characterization using standard methods and the pH were tested using pH meter. The pH results ranging from 4.8 to 5.8 through dry and wet seasons indicate that the groundwater in Owerri is acidic and below the acceptable range required for poultry consumption as suggested by the World Health Organization. An acidic water treatment capsule containing agricultural liming materials (as in this case, Periwinkle shells) was constructed after several experimentations and was tested to be effective in stabilizing the pH of acidic groundwater prior to supply to poultry farms in the study area. The capsule contains 7mm crushed periwinkle shells of 7 litres volume weighing 6.21kg, designed and constructed to allow proper contact and flow of untreated water through the shells contained in it at a flow-rate of 1.8l/min, in the process, stabilizing the water pH to the required range. Equation predicting the pH to flow-rate required to stabilize acidic water using 7litres volume of granulated shells as liming material was developed with correlation coefficient of 0.96.

Acidic Water, Calcium Carbonate, Periwinkle Shells, Water Treatment Capsule