Sir,
I dug a 6.5" borewell in Bangalore south, 8 days ago for domestic use with following details
- First and only water struck at 665'-good pressure, borewell person claimed it is 4".
- Silt layer afterwards and digger stopped at 670'. Declined to go further; reason given heavy water pressure
- Muddy water flow observed
- Casing depth 20', rock formation started at 5' and continued down without break up to water strike.
- Digger suggested to put slotted pipes up to 670'to avoid silt and damage to bore well pump.
But I did not do recheck water with compressor with following observation
- Static water level at borewell-100'
- At 400' water was somewhat clear
- Below 400'water is muddy
- Water discharge about 4000-4500litre/hr
- Water collected in a vessel is brownish with whitish tinge and is colloidal and is not clear even after 24 hrs.
Please advise
- Whether I have to put slotted pipe up to 670'(it costs a lot) before installing the pump
- Whether I can install now a 2hp,30stage submersible pump at say 450' and start using it and hope to get clear water after some days
- Are there any alternatives?
Regards,
Navada