Vol. 3, Issue 2 (2019)
Assessing the pollution indicator in groundwater in Hadejia metropolis, Jigawa state, Nigeria
Author(s): Ahmed G, AH Santuraki, Mukhtar M
Abstract: Study was carried out to determine the nitrate levels in groundwater samples in Hadejia Metropolis Jigawa State, Nigeria. Water samples were collected from 20 selected hand pumps in the area, the CHEMetrics nitrate vacu-visuals test kit was used which employs the cadmium reduction method. The results obtained from the study shows that Sample sites of Majema, Matsaro, Hudu and Gagulmari have the highest concentration of 34.50 ± 0.25, 32.73 ± 0.03, 28.78 ± 0.02 and 21.59 ± 0.01 respectively. Kofar Yamma and Titin Yahai have moderate nitrate concentration among the sampling sites of 14.83 ±0.03 and 13.31 ± 0.09 respectively. Eleven sampling sites recorded least concentrations, while nitrate was not detected in three sampling sites of Unguwar Mu’azu, Sabon Garu and Dallah. It can be concluded that all the water samples which contained nitrate have its concentration below the maximum permissible level of 50mg/L recommended by WHO implying that the water is safe for human consumption from the point of view of nitrate concentration.