Borewells and Tubewells

India being an agrarian country, our farmers depend mainly on groundwater for irrigation. With increasing population, lesser land holdings and urbanisation, deeper borewells are dug for groundwater abstraction. Borewells & tubewells, are very similar. Both are basically vertical drilled wells, bored into an underground aquifer in the earths surface, to extract water for various purposes. The difference in the two lies in the type of casing used, the depth of this casing and the type of soil where they are drilled. Casing to support the external surfaces of the borehole against collapse may be needed at certain depths, and usually is made up of PVC pipes. Electrical pumps are usually used to pump out the water fro the borewells, though the government is now giving subsidy for solar pumps. This convenience of pumps may increase the depletion of the groundwater at an increased pace.

Our FAQ on borewells, deals in detail with topics ranging from the initial planning, selection of site to final commissioning, maintenance of the structure and problems associated with existing borewells,. Another Frequently asked questions (FAQ) on Groundwater - Understanding the basics, narrows down the existing knowledge gaps amongst the common groundwater users.

Excessive drilling of borewells has led to exploitation of groundwater at higher rates than the rate of water recharge and caused depletion of the groundwater levels. To monitor this many states like Karnataka & Kerala have come up with laws & a statutory authority to regulate and keep tabs on the groundwater utilisation. Some states have implemented groundwater legislation acts which prevent drilling of borewells without the permission of Government Bodies in water scarce regions. However, some states allow only drilling of drinking water borewells without the need for obtaining permission. Therefore, it is advisable to explore the details of it before drilling a borewell.

Central Ground Water Board (CGWB) has come with reports on the groundwater status in the country. Uncontrolled use of bore well technology leads to exploitation of groundwater at higher rates than the rate of water recharge, which may cause drastic depletion of groundwater. 

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Hi,

A borewell was drilled upto 300 ft but unfortunately found no water. It was suggested by a few people that we can install a compressor pump and water will accumulate due to dampness underneath and can be pumped out.

Would like to know if we can install a compressor pump as suggested. 

 

 

 

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Hello,

We dug a borewell in our premise for domestic purposes upto a depth of 200ft. The driller said he had encountered a sand bed and that there was plenty of water, hence there was no need to drill further. The PVC casing  pipe was lowered to 197 ft after an hour of compressor based on air flushing.

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Hi,

I have dug a borewell of 550 ft depth but found no water during drilling. After a month, we had lowered a motor at 340 ft depth and approximately got 2100 ltrs of water in 24 hours.

Can you guide me, if I can go ahead and use this well for my household use or do I need to go for another borewell ? 

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Hello,

I would like to dig a borewell in my agricultural land. I have a well on my land which is 100 ft deep and has water. 

How do I identify a good source of water in my land for the borewell?

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 Hi,

Please suggest the minimum depth to which the drilling of borewell is to be continued upon hitting the water surface.

 

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Dear Sir,

Last summer I dug a new borewell which is yielding good amount of water. Recently we have noticed a change in the colour of water which has turned blackish. The mud in this area is slight whitish as we seen in the farms hence we are not sure if its because of silt.

My questions are:

- Is this blackish colour normal ?

- How do we make sure that this water is safe for drinking?

 

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Hello,

I got a borewell drilled in my site in december 2012. My site is around 500 meters from a lake. I got the drilling done using a gas drilling machine and hit water source at 65-70 ft getting around 2 1/2 inch water. The drilling was stopped at 80 ft as pebbles were encountered. The entire 80ft was cased using 6.5" casing pipe with small perforation done using a razor. 

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Hi,

Water gushed out of our 370ft borewell while neighbors drilled a borewell for about 340 feet. Distance between the borewelsl is just 30 ft.

  1. There is deep muddy water coming from our borewell. What could be the reason for this?
  2. What is the potential threat to our borewell because of this recent development
  3.  What should be done to handle this situation?

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