An openwell as a source of water in Bangalore city

Here is a 7 household apartment in Cooke town, which is east-ish Bangalore and close to the Ulsoor lake. The apartment had a well in its site, but still did not build infrastructure to use the well water. Now Mr George discovers that the water is clean enough at least for all non-potable purposes, and is trying to get the apartment to invest for the same. This well water to be used needs to be pumped up 3 floors from at most 10 feet depth. Compare this with water coming from the river Cauvery (Bangalore's main source) which is pumped over a gross head of 500m and needs an institution to supply.