Dear Researcher Dr Chainga 
Appreciates to you
Pl assess
SAT - Soil Aquifer Treatment 
For Shallow Aquifer Management for insitu clean up of ground water.
If in the vicinity of ref boreholes, there are old village dugwells 
Please maintain them well
The data may be sourced for comparison use Etc

Well wishes 
Prof Ajit Seshadri
The Vigyan Vijay Foundation Ngo at New Delhi India 

We are presently considering viable models for bolstering the sustainable operation and maintenance of water handpumps, with a particular focus on the establishment of mechanisms to enable local stocking of crucial spare parts and repair tools. This strategic approach aims to minimize system downtime and, in turn, guarantees the sustained functionality of boreholes. In light of this objective, we seek insights into the most appropriate and effective models currently available for addressing this imperative. Thanks, your expertise and guidance in this matter would be greatly appreciated.