| Borewell Size (Diameter) | Recommended Usage | Rate Per Feet |
|---|---|---|
| 4.5 Inch Dia | Small Residential / Individual Home | ₹ 95 |
| 6.5 Inch Dia | Standard Home / Apartments / Shops | ₹ 103 |
| 7.5 Inch Dia | Commercial / Large Housing Society | ₹ 161 |
| 12 Inch Dia | Agriculture / Industrial High-Yield | ₹ 193 |
*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 !
In the fertile plains of Purnia, the geology consists of deep, unconsolidated alluvial deposits including sand, silt, clay, and gravel. Unlike rocky terrains, the challenge in Purnia is not the hardness of the ground, but the stability of the borehole. We utilize Direct Rotary or Reverse Rotary drilling technologies to manage these soft strata effectively. A crucial part of our service in Purnia is the design of the assembly, where we strategically place 'V-Wire' screens or slotted pipes against the most productive sand aquifers. To prevent the 'sand-pumping' issue common in this region, we perform precision gravel packing, filling the annular space with graded pebbles to act as a natural filter. This ensures crystal-clear water and protects your submersible pump from premature wear and tear. Because Purnia may have multiple aquifer layers, we help clients identify the second or third layer to avoid the risk of surface pollutants or agricultural runoff. Our development process includes high-velocity surging and air-compressor cleaning to stabilize the aquifer and maximize flow. This professional approach results in a high-discharge tube well capable of supporting large-scale irrigation or high-capacity residential requirements.
Technical Setup for Alluvial Terrain:
Direct Rotary (DR) Rig with Gravel Packing for Sand Aquifers.
*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 Purnia, the 6.5 inch dia drilling rate is ₹103 per feet. A typical 290 feet borewell here costs approximately ₹29,870 for drilling alone.
A: In Purnia, the average water level is around 270 feet. However, to ensure a perennial supply, we recommend an ideal drilling depth of 290 feet.
A: Our team is rated as a top service provider in Purnia, offering transparent pricing at ₹103/ft and using advanced Alluvial-specific technology.
A: Industrial wells in Purnia start with larger diameters and involve EIA (Environmental Impact Assessment) costs in addition to the drilling rate.
A: Muddy water usually indicates a casing failure or poor filtration in the Alluvial layer. We offer repair and re-casing services across Purnia.
A: Based on local data for Purnia, we recommend reaching at least 290 feet to tap into the secondary fracture zones for a reliable yield.
This Borewell Cost is also applicable to Purnia, Kasba, Banmankhi, Dhamdaha, Baisi, Amour, Baisa, Bhawanipur, Dagarua, Jalalgarh, Krityanand Nagar, Rupouli, Srinagar, Gulabbagh, Line Bazar, Madhubani, Khushkibagh, Maranga, Harda, Belori.
Purnia, located in the fertile Kosi-Seemanchal subregion of Bihar, is defined by its vast alluvial plains and a dense network of Himalayan rivers, including the Kosi, Mahananda, and Saura. Despite this abundance of surface water, the dependency on groundwater for both drinking and agriculture remains paramount. In the Purnia district headquarters and thriving urban hubs like Gulabbagh, Khushkibagh, and Maranga, the reliance on independent borewells is almost absolute to ensure a consistent year-round supply. While the Saura River flows east of the main city, seasonal fluctuations and the need for high-quality potable water drive residents toward sub-surface extraction.
The possibility of water shortage is relatively low in terms of quantity, as the district benefits from high annual rainfall and constant recharge from its river systems. However, the availability of clean water is a recurring concern. In rural blocks like Kasba, Jalalgarh, and Baisi, the shallow water table—often found at just 2 to 5 meters below ground level—is easily accessible but prone to surface contamination. For the growing urban population and the local agrarian economy centered on jute and maize, a deeper borewell is the most reliable strategy to tap into safer, perennial aquifers that remain unaffected by the dry summer months.
The process for securing a borewell in Purnia is governed by Bihar’s state regulations and the guidelines established by the Central Ground Water Board (CGWB). Any resident or business in the Purnia Nagar Nigam limits or rural tehsils like Amour and Dhamdaha must adhere to a formal approval procedure to ensure environmental compliance. The initial step typically involves notifying the local urban or rural local bodies at least 15 days before commencing drilling. For commercial or industrial units in the Maranga industrial area, a more rigorous No Objection Certificate (NOC) from the Department of Ground Water or Public Health Engineering Department (PHED) is required.
A specific localized requirement in Purnia involves providing land ownership documents and a site plan to the concerned authorities. During the drilling process, it is mandatory to follow the safety rules issued by the District Collector to prevent accidents and protect the local aquifer from cross-contamination. While the "Safety Zone" regulations generally apply to distance from public water schemes, private property owners are increasingly encouraged to register their wells post-installation. Furthermore, the local administration advocates for the installation of rainwater harvesting systems as a prerequisite for clearing large-scale borewell applications, aiming to maintain the district’s favorable groundwater balance.
Groundwater in Purnia is primarily stored in quaternary alluvial formations, which significantly influence its chemical profile. Residents across different localities encounter a variety of water characteristics based on the depth of their wells:
Drilling a borewell in the alluvial terrain of Purnia is relatively straightforward compared to rocky regions, as the subsoil consists mostly of loose sand, silt, and clay. In the Purnia headquarters and surrounding plains, the average water level is quite shallow, but an ideal depth of 325 to 345 feet is recommended to reach cleaner, stable aquifers. The primary method used here is Direct Rotary (DR) drilling or Water Jetting for shallow bores, which are highly efficient in the soft Gangetic alluvium. The success rate for borewells in Purnia is exceptionally high, often exceeding 90%, due to the vast and easily penetrable groundwater reserves.
The total cost involved in a Purnia borewell project is largely determined by the diameter of the casing and the drilling depth. For a standard 6.5-inch diameter borewell (ideal for homes and apartments), the drilling rate in 2026 is approximately ₹101 per foot, with total estimates for a 345-foot well ranging between ₹55,000 and ₹60,000 including PVC casing and site logistics. Challenges in this region include the risk of "sand pumping" if the casing is not correctly screened and the presence of silt in newer wells. The typical life of a well-constructed borewell in Purnia is 15 to 20 years. To ensure longevity, local contractors recommend using full-length slotted or V-wire casing to effectively filter out the fine sand common in the Kosi river's historical channels.
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.