Table 1.

Codes assigned to the cities/regions, with GPS location, from which well water and filtered water were collected in the Southwest region of KSA.

City/Regions	GPS Location	Code Assigned to Well Water	Code Assigned to Filtered Water
Tanomah	18.92901, 42.17702	C1	F1
Belqarn	18.93053, 41.92956	C2	F2
Al Namas	19.11342, 42.16714	C3	F3
Bellasmar	18.79251, 42.25596	C4	F4
Bellahmar	18.63841, 42.32379	C5	F5
Rigal Alma	18.21253, 42.27384	C6	F6
Ahad Rafidah	18.1952, 42.82051	C7	F7
Muhayil	18.54739, 42.05343	C8	F8
Tareeb	18.56551, 43.20596	C9	F9
Abha	18.24646, 42.51172	C10	F10
KhamisMushayat	18.30933, 42.76623	C11	F11
SaratAbedah	18.09931, 43.11656	C12	F12