Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 23 Issue 1

Figure 8b: Results of Water Quality Plotted on Schoeller Diagram Tapping Middle and Lower Aquifer in Boreholes a) Suitability of water for drinking, domestic use and agriculture based on its major ions The first thing to think about the Basin is that, is there enough water to drink both for domestic uses and livestock rearing before talking of small scale irrigation. This is the question to answer before talking about its suitability of the water in the research area. In fact there is no enough water for consumption. The only available water in the study area is little water from A and B sub- zones in Upper aquifer bed with sodium, magnesium and sulphate are higher above the WHO, 2021 limit as detected from analyses of water samples. Wilcox plot enable water to be classified base on the conductivity of the water analysed in the study area. From the Wilcox plot it can be read that, one of the sample is excellent for irrigation with low sodium hazard with conductivity < 250 µS/cm while ten of the samples are good for irrigation with conductivity between < 250 – 750 µS/cm and five of the sample are moderatly good for irrigation with conductivity between 750 – 2250 µS/cm in the Upper aquifer tapping through hand dug wells. In the borehole tapping Middle and Lower aquifer, five of the samples is excellent for irrigation with low sodium hazard with conductivity < 250 µS/cm while twenty of the samples are good for irrigation with conductivity between < 250 –750 µS/cm, This means that the water in deeper Chad Formation is more conductive than those in the phretic zone as a result of higher total dissolve solid ( Figure 9a and 9b). C a M g N a C l S O 4 H C O 3 P a r a m e t e r s 0 . 0 0 . 1 1 . 0 1 0 . 0 Concentration (meq/l) S c h o e l l e r P l o t A A A A A A F F F F F F N N N N N I I I I I I I I I I U U U U U U J J J J J J M M M M M M G G G G G N N N N N N U U U U U I I I I I I Z Z Z Z Z A A A A A K K K K K K S S S S S O O O O O O Q Q Q Q Q Q Y Y Y Y Y P P P P P L E G E N D E B H 1 I B H 2 L B H 3 K B H 4 P B H 5 S B H 6 O B H 7 Q B H 8 Y B H 9 F B H 1 0 N B H 1 1 I B H 1 2 I B H 1 3 U B H 1 4 J B H 1 5 M B H 1 6 G B H 1 7 N B H 1 8 U B H 1 9 Z B H 2 0 Hydrochemical Assessment of Surface and Groundwater in Some Selected Communities of Borno and Yobe State 1 Year 2023 65 © 2023 Global Journals Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( H )