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Borewell contractors are the professionals who are experienced, skilled and hold knowledge about borewell drilling and other things related to it. The borewell is popularly known as the best source for water for domestic purposes. The borewell contractors drill a hole on the ground to reach the underground water levels and bring up the water through pumps for domestic and commercial usage. The borewell contractors in Kolkata provide best services in terms of drilling a borewell.
Here are a few things that you need to know about the borewell drilling process before hiring a borewell contractor
The borewell is required to be drilled in the right place to get water. It is important to call a geologist or water diviners to the site and identify the suitable place. In cases of commercial purposes, some also do the geophysical survey in special cases which are very expensive while comparing to the other techniques. The local well diviners use wooden sticks and magnetic blocks to find the right site for drilling a water-yielding borewell. But, these diviners’ techniques do not work when the geological formation is critical under your land.
It is advisable to drill in summers so that the water is present at the minimal level. This ensures deep drilling and provides water at next summers too. Some others also think the other seasons work well. Depending on the land and its geological formation, you need to decide on the time to drill the well.
As per the order from the supreme court of India, anyone who needs to drill a borewell needs to get permission from the related authorities at least 15 days prior to the day of drilling. It is also recommended that the homeowner got to hang a board communicating that the particular area is getting drilled.
There are many methods of borewell drilling depending upon the type of geological composition under the ground, and the purpose of the borewell drilling. It is important to find the suitable drilling method for your borewell project.
Here is the list of drilling method according to the boring type and geological composition.
Type of drilling
Hard rock and alluvial
Large and deep
Large and deep
Tube well drilling and open well digging is also most common in Kolkata. You can also get open well digging estimate from the contractors.
The pipe and casing are the main components that help to yield the water in a good and usable quality. The casing is also the pipe which supports the borehole and prevents it from getting collapsed. The pipe is present inside the casing to bring up the water from the underground with the help of the pumps. Most of the casings and pipes are made of PVC. The size of the pipes ranges from 4.5” to 12” according to the purpose of the borewell. Make sure that the borewell contractor makes use of quality products to enhance the life of the borewell. It is mandatory to check if the pipes confirm with IS 12818: 1992 Standards which governs the specification for the unplasticized PVC screen and casing under the Bureau of Indian standards.
Some of the commonly used pumps for borewell are jet, compressor and submersible pumps when it comes to domestic purposes. The jet pumps are installed on the ground while the submersible and compressor pumps are installed in the lower levels. The height of the installation of the pump also plays a major role in water yield. The height of the pump installation is decided on the basis of the depth of the borehole or the pipes. The capacity of the borewell pump is decided on the basis of the depth at which the pump is meant to be installed and the desired discharge.
The cost of the borewell drilling depends on many factors and it is really difficult to estimate the expenses before drilling the borewell. The main factors on which the borewell contractors charge are the drilling cost per feet, the cost of the materials like the casing and the pipes per feet, installation of the casing pipe per feet, flushing charges per house and the transportation charge for the borewell drilling machine or borewell truck per km. The drilling rates differ for different depths and the expenses increases as the borewell depth increases.
The borewell services use V-notch to determine the yield of water from the borewells while drilling. The yield of the borewell is referred in inches which is the depth of the water flowing from the notch. Recharging of borewells is enhancing or supporting the borewell by harvesting the rainwater or any other source of water. Doing this increases the water-yielding capacity of borewells.
Hire the best borewell contractors in the city by filling in the form given above. We filter the suitable contractors who can cater to your requirements and allow them to contact you. Discuss with two or more contractors and finalize the one who comes with the best deal.