uncontaminated
/ˌʌnkənˈtæmɪneɪtɪd ˌअन्कन्ˈटैमिनेटिड्/ adj. that has not been polluted (= made dirty by harmful substances) अदूषित; संक्रमित या गंदा न किया हुआ, असंदूषित
uncontaminated water