Physicochemical quality of drinking water in Mubi-North, Girei and Mayo-Belwa local government areas, Adamawa State Northeastern Nigeria was investigated. Water samples were collected using 100ml wide open plastic well sterilized (using distilled water). Sampling was done in the months of August-October for the wet season and January-March for dry season using a portable dissolved oxygen analyzer for DO. Hanna portable pH/EC/TDS/temperature meter for pH, conductivity, total dissolved solids and temperature at sample collection point. The results revealed that in well water during rainy season, the mean temperatures readings ranged from (29.30 – 30.71 oC), and dry season range was (30.33 – 31.12 oC) while (29.85 – 31.42 oC) and (30.39 – 33.19 oC) were recorded for bore-holes during rainy and dry seasons respectively, in well water during rainy season, the mean pH values ranged from (7.3 – 8.24), while during dry season it ranged from (8.68 – 9.36), for borehole water, during raining season ranged from (6.94 – 8.13) and during dry season, it ranged from (8.51 – 9.43). it was revealed that in well water during rainy season, the mean TDS values ranged from (377.67 – 617.00 PPM) and (568.56 – 630.00 PPM) during dry season, for borehole it ranged from (74.44 – 589.44 PPM) and (113.56 – 637.44 PPM) during rainy and dry seasons respectively. During rainy season, the mean conductivity values ranged from (283.25 – 462.75 µS/cm3), and (426.42 – 472.50 µS/cm3) during dry season while for borehole water it ranged from (55.83 – 478.08 µS/cm3) and (85.17 – 442.08 µS/cm3) for rainy and dry season. In well water during rainy season, the mean BOD values ranged from (1.60 – 2.48 mg/l), during dry season it ranged from (0.63 – 1.16 mg/l), for borehole water, during raining season, it ranged from (0.90 – 2.39 mg/l), while during dry season, it ranged from (0.47 – 0.59 mg/l). This study has shown through its findings that the physical parameter for drinking water in the study area are generally within the threshold values stipulated by WHO but fluctuates seasonally (rainy and dry). Hence, both wells and boreholes are suitable for drinking, domestic activities and healthy environment which promote primary productivity as at the time of this study.
