if you really want to build your model (DRASTIC) with ArcGIS from scratch this video is for you.
shape file link: https://data.humdata.org/dataset/admi....
Related reference article: https://doi.org/10.1016/j.envc.2021.1...
we would be grateful if you can cite our article

lat, long, well depth and water parameters data link:https://www2.bgs.ac.uk/groundwater/he...

mail address:
[email protected]