Reduced rainfall, drought, and lack of surface water resources in desert areas have led to excessive extraction of aquifers and threatened groundwater quality. The Kerman study area, one of these areas, is facing a decline in water quality due to population growth, urbanization, and industry. This research evaluates and zones the groundwater quality of the plain using kriging in GIS and Hydrochemical analysis (Piper, Schoeller, and Wilcox diagrams) over a 22-year period (2002-2024). Data for 10 parameters (Ca, Mg, pH, TDS, Th, EC, SO₄, Cl, Na, SAR) were analyzed at 27 sampling points. The results showed that the dominant groundwater type was sodium bicarbonate and there was no significant change during the study period. In terms of quality, the eastern, southeastern and southern regions (Mahan and Joupar) have good to acceptable quality for drinking and agriculture. In contrast, the northwestern areas (Ekhtiar-Abad and Naghshineh) have unsuitable drinking water and a large part of the north and west of the plain is unsuitable to temporarily drinkable. For industrial uses, the water of the eastern, southern and western areas is suitable for industrial processes of the first and second groups (sensitive industries), while the northern and northwestern areas with the maximum chlorine concentration are suitable for industries of the third and fourth groups (relatively sensitive industries). For sustainable management, it is recommended that: transferring water from high-quality areas, improving the quality of polluted sources, cultivating salt-tolerant plants in the north, and eliminating unauthorized wells be on the agenda.