We dug a borewell on 17th March 2012 on a vacant plot of 30x40 at BDA Layout, BSK V Stage, Uttarahalli, Bangalore. The digging was stopped at 863 ft. as there was no noticeable water strikes (as the dust suggested that it was a huge single rock till 863 ft., and there was little noticeable moisture in the dust produced). MS pipe was inserted upto 32 ft.
On completion of drilling, the borewell company official told me that we might have got water of about 1/2 " sufficient for a family of 5. After 2 days of digging, we tried to measure the depth of water and depth of borewell. First we dropped a small stone into the well, and it struck water within 24 seconds. By multiplying it with 9.8, we assumed water depth at 235.2 metres i.e. at 771.5 ft.
Then we took up rope test by tying a small stone to one end of the rope and inserting into the borehole. This could not be completed properly due to the following: The stone tied into one end of the rope hit the depth of the borewell, after which we tried to pull back the rope to test the depth. However, about 25 ft. of rope right from the end where the stone was tied, came out full of oil. It may be due to the oil used by the borewell digger, which has entered the well and settled above the water. Hence, this test of ours failed, and we could not do much here.
Today, after 4 days, we again conducted the exercise of dropping the stone, and it took 18 seconds for striking the water level. By this we assumed water depth at 176.4 metres i.e. 578.59 ft.
With the above details, can any water/borewell expert clarify the following:
1. Do I have enough water in the borewell for a family of 5 i.e. atleast 1/2"of water?
2. What is the process of removing oil from the borewell and whom should I contact for the same in Bangalore?
3. Can I engage borehole camera test to verify the water fissures? If possible, whom should I contact for such test in Bangalore?
4. What type of motor is to be used for pumping the water and the frequency of pumping?
I am very desperate in getting proper help in this matter as I have already spent about 1.2 lakhs for digging the borewell.
Please respond as soon as possible.