| Water Level | 290 Feet |
|---|---|
| Ideal Borewell depth | 290 Feet |
| Good Borewell depth | 375 Feet |
| 4.5 Inch Dia Drilling Rate | Small Home | ₹ 90 / Feet |
|---|---|---|
| 6.5 Inch Dia Drilling Rate | Home / Flats / Shops | ₹ 104 / Feet |
| 7.5 Inch Dia Drilling Rate | Commercial / Society | ₹ 162 / Feet |
| 12 Inch Dia Drilling Rate | Agriculture / Industry | ₹ 181 / Feet |
| Total drilling Cost | ₹ 26100 |
|---|---|
| * PVC Pipe Cost | ₹ 11890 |
| Additional Cost for Narrow Space / Equipment | ₹ 2900 |
| Total Bore well Cost / Estimate | ₹ 40890 |
| Total drilling Cost | ₹ 30160 |
|---|---|
| *PVC Pipe Cost | ₹ 15950 |
| Additional Cost for Narrow Space | ₹ 4350 |
| Total Bore well Cost / Estimate | ₹ 50460 |
| Total drilling Cost | ₹ 46980 |
|---|---|
| *PVC Pipe Cost | ₹ 19140 |
| Additional Cost for Narrow Space | ₹ 5800 |
| Total Bore well Cost / Estimate | ₹ 71920 |
| Total drilling Cost | ₹ 52490 |
|---|---|
| *PVC Pipe Cost | ₹ 27550 |
| Additional Cost for Narrow Space | ₹ 7250 |
| Total Bore well Cost / Estimate | ₹ 87290 |
*Above Bore well cost for Ideal Drilling Depth
*For Narrow Space additional equipment required, hence may incur Extra Cost
* PVC Pipe Installation may varry based on the Soil / Rock type. Here we calculated Average !
Borewell drilling in Kolkata involves navigating the complex crystalline basement of the Indian Peninsular Shield. The geological profile here is dominated by ancient Granite and Gneiss, which are known for their extreme hardness and lack of primary porosity. In Kolkata, groundwater is primarily stored within secondary fractures, fissures, and weathered zones (Murrum). Our drilling process utilizes high-pressure DTH (Down-the-Hole) hammers capable of penetrating these dense formations at significant depths. Because the water-bearing 'veins' are localized, we often recommend a professional geophysical survey to pinpoint the most productive fracture zones. We utilize heavy-duty button bits to ensure straight-hole verticality even in tilted rock layers. For long-term sustainability in Kolkata, we advise installing high-stage stainless steel submersible pumps designed to handle deep-head pressure. Our team ensures that the top weathered layer is properly cased with MS or UPVC pipes to prevent surface water contamination and borehole collapse. This systematic approach guarantees a reliable water source for agricultural, industrial, and residential needs across the region.
Technical Setup for Hard Rock Terrain:
High-Pressure DTH Hammering Rig for Granitic Formations.
*Regulations updated as per 2026 state-wise groundwater policies. Non-compliance may lead to sealing of the borewell and environmental fines.
A: For residential properties in Kolkata, the 6.5 inch dia drilling rate is ₹104 per feet. A typical 290 feet borewell here costs approximately ₹30,160 for drilling alone.
A: In Kolkata, the average water level is around 290 feet. However, to ensure a perennial supply, we recommend an ideal drilling depth of 290 feet.
A: PVC casing pipes in Kolkata vary by brand. For Hard Rock terrain, we use Class-4 or Class-5 pipes to withstand underground pressure.
A: The Hard Rock soil determines the bit type we use. Harder formations require tungsten carbide bits which we use as standard in Kolkata.
A: Summer months (March to June) are best in Kolkata because the water table is at its lowest, ensuring your well never goes dry in the future.
A: It is a maintenance technique we use in Kolkata to remove silt and debris from the bottom of the well using high-pressure air.
Find the borewell cost for your land based on the state, city, and locality. The cost estimate for a borewell tends to vary from area to area. For example, the borewell cost in a village is not the same as the cost in a city. It also depends on factors such as the accessibility of the borewell point, the type of soil (rock or loose soil), labor rates in the locality, PVC pipe and lid prices, and the availability of borewell equipment nearby.