ABSTRACT: In recent, years,, the Suf area, has `become highly populated, increasing- the demands on water resources for various uses.. This, study aims, to evaluate the water quality of major` springs In the. Suf area.. In this respect. 11 mainsprings emerging from two different aquifers (Hummer aquifer` A4,, and Nau`r limestone aquifer Al) werechemically analyzed... Chemical analyses performed include -TDS,, Ca3+, Mg2+, Na+ K+, CT, HCO3 ; SO42" .and NO3as, well as pH, EC and. temperature. Results, show that these springs, have different chemical compositions, which,reflect., to a. large extent, the geological character of the two aquifers. In. addition.,, historical data on. spring chemistry were also used to show the variations and. long term trends in water quality., Generally,» the waters of majorsprings in the area, are of HC0` 3 and. Ca2+ type... Chloride ,and sodium ions make the main contribution to- the salinity of spring waters,, while $Q2 4 and Mg21" concentrations are moderate. Over all, chemical content of groundwater from various, springs is dominated by NO3, HCO`3, Cl",, Na+, and, Ca2+`.. Suf, Fawwer,, Um-Faraj, Al-garaj andNabhan springs show, to some extent, degradation in. the water quality.