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| List-$I$ | List-$II$ |
| $A$. Sulphate $(> 500 \ ppm)$ | $I$. Methemoglobinemia |
| $B$. Nitrate $(> 50 \ ppm)$ | $II$. Brown mottling of teeth |
| $C$. Lead $(> 50 \ ppb)$ | $III$. Laxative effect |
| $D$. Fluoride $(> 2 \ ppm)$ | $IV$. Kidney damage |
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