Information Required on Borewells and RWH


I have 2 questions, requesting guidance:

  • Please let me know if it’s advisable to dig a borewell in an already fully constructed house? Will it affect the foundation?
  • Can RWH be implemented, the house is constructed on a site measuring 30-40 site ( 1,200 Sq Feet), if yes, can the water collected through this be re-used. 

Thanks & Regards