Determination of Physiochemical Properties of Groundwater in Al-Abbasiya Locality, South Kordofan State, Sudan

Groundwater is main source of drinking water in Al-Abbasiya locality. The study aimed to evaluate Physiochemical properties of ground water comparing with Sudanese Standardization Metrology Organization (SSMO) and World Health Organization (WHO). This study was conducted in 2019. 20 samples of water were randomly collected from different areas, and carefully stored. the samples were analysed using an Atomic Absorption Spectrometer (A.A.S), pH Meter, Conductivity meter (E.C), Turbidity meter. the analyses were carried out in Water Quality Lab Unesco Khartoum. the following parameters such as: pH, Electronic Conductivity (E.C), Turbidity, Total Hardness (T.H), Total Dissolved Salt (T.D.S), and total alkalinity (T.A), in addition to some cations, (Na+, Mg2+, K+, Ca2+, Mn2+, Fe2+) and anions such as: (F-, CI-, SO43-, NO32-, NO2-). The results showed that, pH ranging between (7.7-6.7), Electronic Conductivity (E.C), (3450-575 μs/cm), Turbidity (10.5 - 1.1) NTU, Total Hardness (T.H) (436-308 mg/L) and Total Dissolved Salt (T.D.S) (1170-286 mg/L), the values of alkalinity (TA) found (450 - 316 mg/L), Na+ (87-33 mg/L), K+ (2.0 -1.1 mg/L), Mg2+ (69.5-5.35 mg/L), Ca2+ (81.6- 25.8 mg/L), Mn2+ (0.9-0.02 mg/L), Fe2+ (0.08-0.03 mg/L), NH4+ (0.35- 0.10 mg/L), F- ( 2.10- 0.5 mg/L ), Cl- (23- 3.54 mg/L), NO3- (36.1- 0.03 mg/L), NO2- (11.8- 0.02 mg/L), SO42- (440- 011 mg/L), CO42- (364 - 170 mg/L), all samples revealed pH and total solubility values of salt within permissible limits according to drinking water quality guidelines of WHO and SSMO, except sample No. S10 (Al-gabal Al- ahamar), which contained slightly higher than the acceptable limit (1170 mg/L), and all showed higher electrical conductivity than the approved limit excluding samples No (S4 and S7) which were recorded values less than permitted standard (120 and 98) respectively. The hardness of the all samples were within allowed range and from analysed the values of dissolved bicarbonate, nitrate and salts were noted lower than their standard values, 0.3 mg/L. Concentration of Magnesium 25 mg/L and Calcium 45 mg/L in some samples are less than suggested range. As the result of these findings the water can be use without treatment with the exception of (S4 and S7) remained unfit for human usage due to increase in total dissolved salts.