It is obvious that you can ...
Published by LOKESH PUNJ, A B.TECH. Agr Engg, PGDM-SPA IIMA (1977-9) 25 yrs in Water Piping / Irrigation/Infra Projects
It is obvious that you can not allow Hand pump discharge to be consumed directly. Hand pump flows have to go to a storage tank where a dose of Potassium Permanganate is easily possible. There after, it needs to be filtered to remove Arsenic salts. Then various options are : 1. Let individual Households use it as input to their individual R.O. to remove TDS for Drinking water purposes and washing of hair/ skin etc. The RO reject should get used for toilet flushing, etc.(Individual ROs are better maintained than community RO.) Or
2. Use Focused Sunlight Energy/ Power to heat water in tanks and collect the vapour/ steam condensate for drinking water purpose.
3. Invest in Rain water harvesting to reduce the TDS of Ground water and dispose off Reject waters at far off locations.