control is an important aspect of safe drinking water supplies. The effects of corrosion
which may not be evident without monitoring are an important issue concerning
both public health and economical aspects. Chemical stability parameters of
water quality in water treatment plants in Baghdad city can improve drinking
water quality. The treated water quality from water treatment plants in Baghdad
city was investigated along the water flow path in this study. The water
quality parameters related to chemical stability included temperature, alkalinity
as mg/L CaCO3, calcium mg/L as Ca, pH and total dissolved solids
(TDS) mg/L for different samples from WTPs within Baghdad city were
investigated. The two water quality indices, Langelier saturation index (LSI)
and the Ryznar stability index (RSI), were calculated in order to evaluate the chemical
stability of the drinking water samples. The results of LSI and RSI of the
effluents from Baghdad’s WTPs during 2000-2013 classified that corrosive water
is produced and this indicates that the water is not safe for domestic use and will
need the further treatment. The present study demonstrated the application of
water stability indices in estimating/understanding the treated water chemical
stability and appeared to be promising in the field of treated water quality
Cite this paper
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