Question

why cannot groundwater be used for irrigation?

Answer 1

HERE IS YOUR ANSWER MATE ✌

GROUND WATER CAN'T BE USED FOR IRRIGATION BECAUSE THEY CONTAIN LOT OF NATURAL MINERALS

Answer 2

the ability of improved irrigation effency to result in real watersaving has been questioned because much of irrigation exced to through to return to stream aquifier and saved water is often use for expend irrigation or irrigate more power intensive