| Abstract | Irrigation is the largest single purpose beneficial
consumptive use; among the multipurpose uses for which water
resources are developed . Hence , the quality of irrigation water
become more and more significant as water resources development
increases within each river bas in. The quality of an irrigation
water is judged not only by the total concentration of ions, but
also by the individual ions present. ·The most common cations in
irrigation water are Calcium, Magnesium, Sodium a nd Potassium;
and the most common anions are bicarbonate , sulphalt, and
chloride , also other solutes , such as nitrate , carbona , and
some trace elements may_ affect irrigation water quality in some
instances.
With the growing world wide shortage of water, there is an
increasing tendency, especially in a rid. and semiarid regions to
recycle s e wage , municipal, and industrial wastewaters for the
purpose of irrigation. While this is a praiseworthy measure for
the conservation of resources, it may create various health
hazards . But much study has been devoted to this problem and
various standards have been suggested in different countries. A11
in all, the following topics have been outlined in details in
this study, such as - the analysis of quality of water
irrigation , comprising sampling techniques and methods of
analysis, the classification and evaluation, comprising
salinity hazards, .sodality hazards, and specific ion toxicity
hazards, - the physical quality of irrigation water, comprising
sediment , debris , weed seed , corrosion, .reuse of wastewater for
irrigation, health hazard , - the treatment to improve irrigation
water quality and trends in irrigation water quality as a whole.
|