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Seasonal variation of some chemical quality indicators of drinking water from selected villages around Zakho district Kurdistan region Iraq

2nd International Conference on Advanced Science and Engineering (ICOASE 2019)
Drinking water samples were taken from 18 villages around Zakho district, Kurdistan region, Iraq in annual seasons of 2018 year and chemical analysis of most important water quality parameters were carried out. Water temperature is varied about 13.2◦C to 18.7◦C, four villages have slight acidic water while other 15 locations are tend to be slight alkaline and highest pH value reaches 8.4, electrical conductivity (µs/cm) is over the permissible values of standard drinking water in two villages and high in 4 location while normal in the rest 13 locations, statistical analysis of dissolved oxygen ranges between 6.73 - 8.40 mg/l, statistical analysis of total hardness revealed that the all villages around Zakho district have hard to intensive hard water over 500 mg/l and gives them a slight bitter taste, calcium hardness gives extremely ranges between 72-392 mg/l, and Mg hardness between 39-250 mg/l, statistical analysis of chloride shows is around 250 mg/l which is typical standard for drinking water, SO4 is low and their means located between 18-58 mg/l and NO3 not exceeded 5 mg/l along year months reflecting their purity from pollution. The content of heavy metals Cd, Cu, Mn, Zn, Fe, Ag, Ni, Cr ,Co, are below maximum permissible WHO guidelines and save for drinking while lead is over WHO permissible levels in this rank Mala> Jajoe >Easlam> Bntate> Banee villages and considered a dangerous indicators for drinking water quality in these villages.

Evaluation of physical and chemical quality of well water in Zakho District, Kurdistan region, Iraq

International Conference on Advanced Science and Engineering (ICOASE 2018) IConMEAS 2018
This study evaluates the physical and chemical characteristics of well water in Zakho district, Duhok governorate. Standard field and laboratory methods were followed. In order to characterize ground water quality in Zakho district, eight wells were selected to represent their water quality. Monthly samples were collected from the wells for the period from October 2016 to April 2017. The samples were tested for electrical conductivity (EC), total alkalinity (TA), total dissolved solids (TDS), pH, Nitrate (NO3-), total hardness (TH) and chlorides, according to the standard methods (American Public Health Association. The results of statistical analysis showed significant difference among the wells water quality in the measured parameters. Ground water of Zakho district have high dissolved ions due to the dissolved rocks of the study area. Total dissolved solids of more than 1000 mg/l made the wells Frawla, Kealk and Zarek need to be treated to made taste palatable. Additionally high electrical conductivity and TDS made Zakho ground water have a slight to moderate restriction to crop growth. The high alkalinity of Zakho ground water indicated stabilized PH . The water quality of all the wells were found excessively hard. The nitrate concentration of Zakho well water ranged between 0.19 to 42.4 mg/l below the guidelines for.