Evaluation of parasitic contamination of local potable water sources in Doma Local Government Area of Nasarawa State, Nigeria

Abstract

The health and well-being of individuals in a nation absolutely depends on the quality of water available for consumption. Therefore, this study evaluated parasitic contaminants of drinking water sources in Doma Local Government Area of Nasarawa State, Nigeria. A total of 48 water samples were collected from different sources (boreholes, wells and streams) from March to July 2017. The water samples were analyzed using the Calcium Carbonate (CaCO3) floatation method and the samples were examined microscopically for the presences of parasites. A total of 32 (66.67%) water samples were parasitized by a trematode (Fasciola hepatica), two protozoans (Entamoeba histolytica, and Giardia lamblia) and three nematodes (Trichuris trichiuria, Ascaris lumbricoides and Hookworm). The nematode group had the highest contamination rate 19 (59.38%) followed by the protozoan group 12 (37.50%) while trematode was the least with 1(3.13%). The stream source was the most contaminated in late dry and early wet seasons having 69.23% and 94.74% respectively, followed by wells which had 30.77% and 5.26% in late dry and early wet seasons respectively while boreholes had 0% contamination in both seasons. Therefore, prevalence of parasites in relation to sources of water showed a very high significant association (X2= 49.741, df = 2, P < 0.0001), while there was no significant association with seasons (X2 = 2.3438, df = 1, P = 0.1258).Result indicated high rate of parasitic contamination of drinking water sources in the study area. Hence, the need for advocacy and enlightenment of the inhabitants of the area on the importance of proper treatment of potable water.Key words: Parasites, potable water sources, seasons