QUALITY ASSESSMENT OF SHEREHILLS DAM WATER FOR IRRIGATION PURPOSES IN JOS, NIGERIA

Ezekiel Oiganji, Donatus Obiajulu Onwuegbunam, Nancy Esohe Onwuegbunam, B.A. Abok

Abstract


The Sherehills dam serves as source of irrigation water and domestic usage for communities around the dam. However, there has been no baseline data on the water quality of the dam; in view of, a study was carried out to assess physiochemical parameters and to investigate the variations of the element at different sections of the dam for some element present in the Sherehills dam reservoir situated in Jos North Area of Plateau State. Water samples were collected in three (3) different locations namely; upper, center and lower section, analyzed in Bauchi State Water Quality Laboratory. The temperature ranged from 22.0°c-35.2°c, pH ranged from 2.66-6.49, EC ranged from 72.6-94us/L, TDS ranged from 36.6-45.9mg/l, Total hardness ranged from 18-39mg/l, Copper ranged Null, Sulphate ranged from 0-22mg/l, Chloride ranged from 0-5.6mg/l, Nitrate ranged from 1.64-15mg/l, Nitrite ranged from 0.01-0.07mg/l, Alkalinity ranged from 6-85mg/l. The result of the analyzed parameters when compared to the standard for irrigation water quality of NESREA (2011) and NSDWQ were within the permissible limit, but turbidity and color were high with respect to NSEREA and NSDWQ standard. Turbidity and color does not have much effect on plant development and growth but with regards to consumption, it must be treated with activated carbon filter and alum flocculation.

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