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Vishal Borewell Drilling Service FAQ

Frequently asked questions about our Services like Borewell Drilling Service, Rechargewell, Rainwater Harvesting Consulting, Groundwater Survey, CGWA NOC and Products like Piezometer Digital Water Level Recorder DWLR, Electromagnetic water Flowmeter, SS Vee Wire Filter Screen.

Frequently Asked Questions

Groundwater Exploration

Site selection for borewell drilling requires careful planning and expert analysis:

  •  Lithology Analysis: Groundwater consultants must understand the area’s lithology.
    Depth
  •  Assessment: Evaluate the current borewell depths and the water availability at each aquifer stage.
  •  Geological Testing: Perform practical tests, including low-lying area selection, rock meeting points, and a geological compass dip test.
  •  Resistivity Plotting: Use electrical sounding, magnetic resonance, or induced polarization methods to plot earth’s resistivity every 30 feet.
  •  Depth Comparison: Identify the least resistive depths and compare them with pre-borehole logs.
  •  Permeability Calculation: Calculate permeability ratios using the least resistivity values and satellite maps.
  •  Station Selection: Choose a minimum of three stations based on these analyses, and select the best point for drilling.

Scientific groundwater exploration provides a clearer understanding of aquifer depth and station conditions before drilling. Geophysical methods play a vital role in accurately identifying subsurface hydrogeological conditions. The effectiveness of these methods relies on detecting contrasts between the target and its surroundings. Successful groundwater exploration requires integrating various techniques for better results, both technologically and economically.

For precise borewell location identification, contact Vishal Borewell Drilling.

Groundwater exploration investigates underground formations to understand the hydrologic cycle, assess groundwater quality, and identify aquifers. Various methods exist, and one key approach is the surface geophysical method.

To maximize groundwater potential, drill borewells when the site has sufficient water. Experts often recommend summer for drilling to ensure optimal conditions. Agricultural sites, accessible mainly in summer, benefit from this period for borewell installations.

Borewell Drilling DTH & Rotary

The choice of drilling methods depends on factors such as geological formation type (e.g., alluvial, bouldery, hard rock), cost considerations, borewell diameter, depth requirements, and intended purpose. Common drilling methods include:

  •  Water Jetting: Suitable for shallow bores in alluvial formations.
  •  Augur Drilling: Effective for shallow bores in alluvial formations.
  •  Calyx Drilling: Suitable for shallow borewells in both hard rock and alluvial formations.
  •  Percussion Drilling: Ideal for deep bores in bouldery formations.
  •  Rotary Drilling: Most widely used for large and deep bores in alluvial formations.
  •  Down the Hole Hammering (DTH) Drilling: Preferred for large and deep borewells in hard rock formations.

DTH, short for “down-the-hole,” was initially developed to drill large-diameter holes downwards in surface-drilling applications. The method gets its name from the percussion mechanism that follows the bit down into the hole. Later, applications were discovered underground, where drilling typically goes upwards.

DTH Borewell Drilling utilizes a vehicle equipped with a high-power hydraulic unit and air compressor machine. This method involves a down-the-hole drill, commonly referred to as DTH, which features a hammer at the bottom of the drill rod. The rapid hammer action effectively breaks hard rock into small cuttings and dust, which are then cleared away by air. It is widely used for drilling on soil surfaces and through hard rock.

DR Borewell Drilling specializes in extracting water from unconsolidated formations using direct rotary drilling. During this process, mud is pumped through the hollow drill pipe and ejected through jets in the drill bit. This fluid carries the cuttings up to the surface where it’s either recycled through a containment system or pit. The cuttings settle in a designated pit, and a suction hose returns the mud to the drilling bit for continuous use.

The charges for drilling a specified borewell size include:

  •  Drilling cost per foot
  •  Cost of casing pipe per foot
  •  Drilling and installation charge for casing pipe per foot
  •  Flush charges per hour for borewell flushing
  •  Transportation charges for rig delivery per km from the nearest town

Drilling rates vary by depth, often in specified ranges. Rates depend on rig availability, local demand, and site conditions. For accurate pricing, compare quotes from multiple drillers. Contact Vishal Borewell Drilling for detailed commercial information.

  • Start your borewell drilling project in summer when water levels are lowest.
  •  Avoid traditional methods for checking water availability. Water levels are dropping; consider borewell longevity.
  •  Consult a hydrologist for water predictions.
  •  Check municipal restrictions and permit procedures before digging.
  •  Trust government-approved contractors for borewell drilling.
  •  Inquire about drillers’ licenses and experience.
  •  Ensure contractors visit your site to quote appropriately for rig size.
  •  Use appropriate rig sizes for easy manoeuvrability.
  •  Experienced contractors offer hydraulic rigs for narrow areas.
  •  Secure rigs to minimize vibration during operation.
  •  Use durable, branded casing pipes to reduce wear.
  •  Opt for PVC casings to avoid corrosion.
  •  Drill deeper to maintain the water supply.
  •  Install submersible pumps for efficient water extraction.
  •  Consider storage tank height for pump efficiency.
  •  Avoid sites near polluted water bodies or sewers.
  •  Add water for lubrication and heat reduction during drilling.
  •  Use thick-clad electrical cables for pump operation.
  •  Use gravel packing to prevent sand passage.
  •  Immediately secure borewells to prevent gravel contamination.

Bore wells and tube wells are distinct groundwater extraction structures used to access subsurface aquifers. Bore wells are drilled in hard crystalline rocks, while tube wells are typically drilled in soft sedimentary strata, especially along coastal areas. In bore wells, casing pipes extend only to the bedrock, whereas tube wells utilize pipes that reach the full depth of the bore.

Construction methods differ as well. Bore wells employ the down-the-hole drilling (DTH) technique, known for its efficiency in breaking hard rock into small particles blown clear by air exhaust from the DTH hammer. Tube wells, on the other hand, utilize the Rotary Drilling method. This method involves rotary rigs with clockwise rotational force applied to the drill string, facilitating the borehole drilling process.

In Direct Rotary (DR) drilling, muddy water is pumped into the bore through hollow drill pipes, allowing it to carry drill cuttings (mostly sand) to the surface. Controlled water usage maintains mud viscosity, preventing temporary bore collapse. Conversely, Reverse Rotary drilling allows water to enter along the drill rod’s outer surface and is suctioned out through the central hollow, providing a more precise strata chart.

Borewell Utilities

A yield test assesses the balance between the maximum water extraction from a borehole and the recharge from surrounding groundwater sources. Several factors must be considered during borehole testing. Two key rules determine sustainable yield: total water abstraction should not exceed natural groundwater recharge, and pumping should prevent water levels from reaching the main water strike point, typically a fracture. Failure to adhere to these rules can diminish yield and eventually deplete the borehole.
Testing pumping boreholes serves two main purposes: establishing borehole potential and estimating sustainable yield and hydraulic performance for water supplies. It also determines aquifer potential and assesses hydraulic characteristics to gauge groundwater resources.

A pumping test involves pumping a borehole at a specified rate while monitoring water levels in both the pumping well and nearby observation boreholes at set intervals. By applying these measurements to flow equations, hydraulic parameters are determined. These parameters, along with qualitative assessments of discharge-drawdown characteristics, help evaluate the borehole or aquifer’s recommended yield.

During a Step Test, pump rates increase incrementally over time, offering insights into borehole effectiveness but not long-term sustainability. In contrast, the Constant Rate Test (CRT) involves pumping at a steady discharge rate for 8 to 48 hours or longer, providing critical data on sustainable yield. Hydrogeologists analyze time-drawdown data using mathematical models to estimate this yield.

Following the CRT, a Recovery Test measures water level recovery in the borehole after pumping stops. This test assesses aquifer dewatering and determines residual drawdown levels post-recovery.

For borewell yield assessments, contact Vishal Borewell Drilling.

To maintain optimal yield from bore/tube wells over time, constant use may lead to declining yields. Well screens in tube wells can clog, while clay particles may cement in limited fracture areas, causing reduced yield. Additionally, silt and sand particles can fall due to transient flow, further hindering pumping. The solution involves cleaning the well using water jetting or pressure injection techniques known as flushing. For borewell cleaning services, contact Vishal Borewell Drilling today.

Choosing the right site for borewell drilling involves several crucial steps:

  •  Firstly, the groundwater consultant must assess the lithology of the target area. Understanding the current borewell depths and water availability in each aquifer stage is advantageous.
  •  Identifying low-lying areas and geological formations where rocks meet is essential. This involves conducting a geological compass dip test and utilizing methods like electrical sounding or magnetic resonance to measure earth’s resistivity every 30 feet.
  •  Based on changes in resistivity, areas with the lowest resistivity are selected for further evaluation against existing borehole logs.
  •  Using permeability ratios and satellite maps, the least resistive depths are calculated to pinpoint the optimal drilling location. This rigorous process typically involves selecting a minimum of three potential sites, ensuring the best location is chosen based on comprehensive comparisons.

Scientific groundwater exploration plays a crucial role in accurately assessing aquifer depths and conditions before drilling. Geophysical methods are integral to this process, detecting subsurface hydrogeological conditions by contrasting physical properties. Effective application and integration of these techniques are key to successful and cost-effective groundwater exploration.
For expert guidance on borewell location identification, contact Vishal Borewell Drilling.

Regular flushing of borewells using a high-pressure air compressor ensures optimal yield and safety. Groundwater conditions can fluctuate, making periodic flushing crucial. High-pressure air effectively removes raw water, dust, and any decomposed particles, ensuring continued efficiency and cleanliness.

Borewell development enhances water yield by clearing accumulated materials such as sand, clay, and rock cuttings, while also increasing borewell permeability. This process is crucial for restoring water output in borewells experiencing reduced yields due to silt and mineral deposits clogging pore spaces.

Methods typically used include flushing and over-pumping with air pressure. In hard rock areas, drilling is preceded by a 2-3 hour flushing using compressed air. This step, often skipped due to its additional complexity, is essential before completing the drilling process at any site. Flushing with air pressure or over-pumping are standard methods to improve borewell yield.

Bore blasting, involving explosives ranging from 14 to 230kg, opens up fracture zones in hard rock borewells to potentially access water. Professional assistance is crucial due to the method’s impact on borewell stability.

Hydro-fracturing uses high-pressure water to create and clean fractures deep in rocky layers, significantly improving water flow. This process, adopted by government water supply departments and increasingly by private agencies, involves pressures up to 3000 PSI. Prior to hydro-fracturing, a borewell camera identifies fracture zones, ensuring optimal results.

Gravel packing prevents sand production in wells by stabilizing formations like sandstone and limestone. It complements hydraulic fracturing at lower pressures. Sand formation occurs naturally in these rocks, impacting well productivity. For gravel supply, reach out to Vishal borewell Drilling.

The well’s yield relies on the Transmissivity (T) and Storativity (S) of the aquifer, determined by its thickness and material composition. Bore wells draw from fractured aquifers, potentially interconnected, with yield dependent on the extent of these fractures. Variations in fracture depth and distribution within short horizontal distances cause differential yields among bore wells nearby.
Water remains a critical issue today. Profiting from water sales defines our era. While many blame borewells for groundwater depletion, the reality is human misuse. Borewells extract water from shallow depths, but some violate regulations, exacerbating the problem. Boosting borewell water levels involves several methods:
  •  Use filtered taps.
  •  Reuse filtered wastewater for washing and gardening.
  •  Implement effective rainwater harvesting.
  •  Create small stone-filled pits near borewells to channel rainwater, aiding groundwater saturation.
  •  Build percolation tanks to replenish wells and borewells.
Measuring exact water levels relies on estimated time, pressure, ropes, and sound methods. Quality water, free from contaminants, is crucial for borewell recharge, vital for sustaining water levels. Reboring dry borewells ensures continuous water availability, while indirect recharging maintains water supply year-round.

Choosing between a borewell and an open well depends on several factors like location, land structure, usage, cost, etc. Let’s compare open wells and borewells to help you decide:

Open wells typically yield less water compared to borewells. They are highly susceptible to contamination, making the water unsuitable for drinking or cooking without treatment. Additionally, there is a higher risk of accidents, especially with children falling into them. Drawing water from an open well is traditional, requiring the use of a rope and pulley system.

For easier access, especially for elderly or young children, borewells are the preferred solution. Unlike open wells, borewells provide a more environmentally friendly and long-term water solution.

While open wells have historical significance, such as in the Harappan Civilization, borewells offer a modern solution. They ensure regular access to clean and safe water, making them the optimal choice in today’s world.

 
Sealing defunct or unused borewells is crucial to prevent groundwater contamination. If left open, these borewells can rapidly contaminate groundwater by allowing contaminants directly into aquifers. Use high-quality clay materials to seal the borewell effectively, following various methods after removing the casing pipe (details provided in the reference). If sealing isn’t feasible, securely cover the borewell with a well cap or a concrete or stone slab covered with earth. Ensure no wastewater or external materials enter the unused borewell. Alternatively, convert unused borewells into rainwater recharge wells with proper filtration and intake arrangements around the well.
To prevent water reservoir depletion and reduce over-exploitation, it’s crucial to implement large-scale groundwater aquifer recharge initiatives in urban areas. As urban populations grow, so does the strain on freshwater sources, especially underground water, which faces excessive pumping without adequate replenishment. This imbalance threatens water tables, risking dry wells and depleted reservoirs. Key strategies include:
  •  Bore Well Recharging: Direct filtered rainwater from rooftop collection systems to bore wells via filtration tanks and drain pipes. Ensure initial rain showers are separated out to maximize filtration efficiency.
  •  Recharge Pits: Construct small, masonry-walled pits with weep holes and filled with filter materials like pebbles. Cover with perforated lids and size according to catchment area and rainfall intensity to optimize percolation.
  •  Dug Well Recharging: Use dug wells as recharge structures by directing rainwater through filtration beds. Regular cleaning and desalting are essential to maintain optimal recharge rates.
  •  Recharge Trenches: Dig trenches in areas with shallow impenetrable soil layers, filled with filter materials such as pebbles or brickbats. Tailor trench length to expected runoff for effective surface water harvesting.
  •  Percolation Tanks: Submerge highly permeable land areas to facilitate groundwater recharge. Implement in suitable terrains to maximize percolation and replenish groundwater reserves.
Implementing these strategies will help sustain urban water resources, mitigate over-exploitation, and ensure future water security for cities.
Several factors can cause reduced yield in domestic or commercial water boreholes. These include:
  •  Mechanical Blockage: Soil particles or well-wall by-products can accumulate, causing blockages or reduced flow.
  •  Chemical Encrustation: Chemical deposits on the well screen or gravel pack can restrict water flow.
  •  Bacteriological Plugging: Bacteria and microorganisms can also clog boreholes.
To rehabilitate a borehole, the steps vary based on the cause of blockage or reduced flow. Here’s an overview of the typical process:
  •  Firstly, a survey assesses the borehole: Initial depth, original versus current yield, and borehole diameter are evaluated.
  •  Next, the pumping mechanism and parts are cleaned with a chlorine solution. Sediment and debris are removed by draining and thorough cleaning.
  •  Damage inside the borehole is repaired; extensive damage may require re-lining.
  •  The borehole undergoes chlorinated water cleaning and, if necessary, chemical cleaning, which takes 1 to 3 days and requires dewatering afterward to remove chemicals.
  •  Chlorination disinfects the borehole, followed by dewatering until chlorine levels drop below 0.5mg per liter.
  •  Finally, the borehole is resealed.

Submersible Motor Pumping

To select the right pump horsepower, consider the pump’s installation depth and desired discharge. Determine the total head by factoring in pump depth, overhead tank level, and expected pipe friction loss. Refer to pump rating curves from different manufacturers to match the total head and desired discharge for optimal horsepower selection.
Jet, compressor, and submersible pumps are widely used for domestic purposes in India. Jet pumps, installed above or near the borewell, are suitable for depths up to 150 feet. For lower groundwater depths, submersible or compressor pumps are preferred. Compressor pumps, suitable for low-yielding borewells, are easy to install and maintain at ground level. However, they can be noisy and may require frequent repairs. Submersible pumps, now available in 4” diameter for single-phase electricity connections, are increasingly preferred for domestic borewells due to their ability to meet higher water requirements. However, if installed in borewells with heavy silt particles, submersible pumps may require frequent repairs.
A submersible pump, also known as an electric submersible pump, operates fully submerged in water. The motor, hermetically sealed and closely coupled to the pump body, converts rotary energy into kinetic energy and then into pressure energy, pushing water to the surface. Water enters the pump through the intake, where the impeller’s rotation propels it through the diffuser before reaching the surface. One major advantage of submersible pumps is their self-priming capability, as they remain submerged in the fluid. They are highly efficient, benefiting from water pressure to minimize energy consumption during operation.
  •  Borewell Size: The diameter of the hole dug for submersible installation. Opt for a pump with a smaller outer diameter to fit the bore well size, avoiding mismatches.
  •  Head of the Borewell Submersible Pump: Determines the maximum water lift height. Choose the appropriate model based on house size and local water table. Total head combines pump depth and tank height, measured in feet or meters.
  •  Outlet/Delivery Size: Pipe diameter for water ejection. Match it with your storage tank pipe size, usually measured in inches or mm.
  •  Discharge Rate of Borewell Submersible Pump: Measures water output per minute or hour. Larger areas require higher discharge rates, measured in liters per minute/hour.
  •  Stage: Efficiency varies by stage selection based on motor rating and head, crucial for maximizing pump efficiency.
  •  Cooling System of Borewell Submersible Pump: Options include oil-filled and water-filled motors. Water-filled motors allow refillable coolant, making them superior to non-refillable oil-filled ones, despite the latter being cheaper.
  •  Material of Construction: While not affecting pump performance, materials like Noryl impeller and CI motor body enhance longevity.
For complete water pumping solutions, Contact Vishal Borewell Drilling.
Borewell water is typically safe to drink. Water from borewells in hard rock areas usually lacks bacteria and chemicals. After drilling, experts test the water for contaminants. You can test water at National Accreditation Board for Testing and Calibration Laboratories (NABL) or government-approved labs. Filtration and other treatments remove impurities and enhance water quality.

Rainwater Harvesting & Rechargewell

Rooftop Rainwater Harvesting captures rainwater from roofs and stores it in reservoirs. This water can then be stored in underground reservoirs using artificial recharge techniques for household needs. The main objective is to ensure water availability for future use. This method is especially crucial in dry, hilly, urban, and coastal areas.

For detailed Rooftop Rainwater Harvesting consulting, contact Vishal Borewell Drilling.

 
Rainwater harvested from rooftops serves as a catchment area, especially in urban areas with moderate to high rainfall. This water is stored in tanks for domestic use. Additionally, excess rainwater can recharge the groundwater. If you plan to recharge groundwater in a domestic well used for drinking, ensure impurities from the rooftop are filtered before recharging. The first few showers are usually avoided since they likely contain dust particles and atmospheric impurities. A roof water recharging system should have a clean rooftop connected to a proper filter mechanism with a provision to divert impure water.

For rooftop rainwater harvesting through existing tubewells and handpumps, provide a filter or desilting pit to prevent siltation. Pump these tubewells intermittently to increase recharge efficiency.

If recharging the groundwater reservoir through a shaft or dug well, use an inverted filter. Place storage tanks away from contamination sources like septic tanks. Position storage tanks lower than the roof to ensure complete filling. Install an overflow pipe in the rainwater system to direct excess water to a non-flooding area. Use excess water to recharge the aquifer through a dug well, abandoned handpump, or tubewell.

Include a speed breaker plate below the inlet pipe in the filter to protect the filtering material. Ensure storage tanks are accessible for cleaning. Screen the inlet into the storage tank for easy regular cleaning. Disinfect water regularly before drinking by chlorination or boiling.

To efficiently collect rainfall, consider several factors. Typically, an 80% collection efficiency is achievable with proper design. Start by calculating the water generated from your roof area using the average monsoon rainfall.

Total quantity of water to be collected (cu.m.) = Roof Top Area (Sq.m.) x Average Monsoon Rainfall (m) x 0.8

Recharging dry borewells with rainwater can be efficient and eco-friendly. Here’s how:
  •  First, collect rainwater by creating a pond or pit at ground level next to the borewell. This setup captures monsoon rains. Alternatively, use rooftop collection methods.
  •  Next, use PVC pipelines to direct rainwater to the borewell site.
  •  Then, filter out impurities and pollutants from the rainwater. Discard the first runoff, as it contains most contaminants, and use the naturally cleaner water that follows.
  •  Finally, transfer the pure rainwater to the borewell. This water can be used for drinking, growing food, and household needs.
Recharging your dry borewell offers multiple benefits. For professional assistance, contact Vishal Borewell Drilling.
Rainwater harvesting systems include the following components:
  •  Catchment: Collects and stores captured rainwater.
  •  Conveyance system: Transports harvested water from the catchment to the recharge zone.
  •  Flush: Flushes out the first spell of rain.
  •  Filter: Filters collected rainwater, removing pollutants.
  •  Tanks and recharge structures: Store filtered water ready for use.
The process of rainwater harvesting involves collecting and storing rainwater using specially designed systems that capture runoff from natural or man-made areas like rooftops, compounds, rock surfaces, hill slopes, or artificially repaired impervious or semi-pervious surfaces. Contact Vishal Borewell Drilling for detailed consultancy on rainwater harvesting systems.

A percolation pit is a shallow hole dug into the ground, similar to a rainwater harvesting system. It helps rainwater permeate through the soil strata. Percolation pits, along with trenches, play a crucial role in groundwater recharging. While they are not as efficient as structures like bore wells or open wells that directly charge rainwater to the aquifer, they are a better option than letting rainwater wastefully flow into the sewage system.

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    The quantum of runoff significantly influences water management. Additionally, the features of the catchments play a crucial role. Moreover, the environmental impact is substantial. Fortunately, technology availability aids in efficient management. Besides, the storage tanks have a significant capacity. Furthermore, the type, slope, and materials of the roof affect water collection. The frequency, quantity, and quality of the rainfall are also important. Lastly, the speed and ease with which rainwater penetrates the subsoil to recharge groundwater are vital for sustainability.

Rainwater harvesting is a top method to conserve water. Today, water scarcity is a major concern. However, rainwater, pure and high-quality, can be used for irrigation, washing, cleaning, bathing, cooking, and livestock needs.

  • Less cost
  •  Lowers costs and reduces water bills.
  •  Decreases water demand and cuts reliance on imported water.
  •  Promotes water and energy conservation.
  •  Enhances groundwater quality and quantity.
  •  Easy to install and operate, this technology reduces soil erosion, stormwater runoff, flooding, and pollution.
  •  Provides chemical-free water for landscape irrigation, free from dissolved salts and minerals.

Vee Wire Filter Screens are crafted in pipe form using SS wires. These screens consist of V-shaped outer wires and inner longitudinal rods. The V-shaped wires are spirally wrapped around longitudinal rods, creating a robust weld joint through resistance welding.

  •  Anti-corrosive Material: Crafted from stainless steel, it’s ideal for acid treatment to prevent incrustation and gravel blockage, ensuring prolonged bore well life.
  •  Vee-Shaped Slots: Generates a jetting effect to inject recharge water efficiently into the aquifer.
  •  More than 1 Times Effective Open Area: Offers a high percentage of open area for enhanced effectiveness.
  •  Efficient, Non-Clogging Screen Assembly: Filters maximum suspended solids from raw water with non-clogging slots, ensuring a consistent recharge rate.
  •  Easy Installation: Saves money, time, and energy; tailored for both small and large rooftop areas.
  •  Continuous Slots for Maximum Open Area: Maximizes open area for optimal functionality.
Contact  Vishal Borewell Drilling today to leverage the benefits of our Vee-Wire Screen filter for your Rainwater Harvesting project.

Piezometer- Digital Water Level Recorder- Observation well

To measure liquid pressure in a system, a piezometer gauges the height of a liquid column against gravity. It specifically measures groundwater pressure at a given point, focusing on static pressures rather than fluid flow, unlike a pitot tube.

Piezometers come in various shapes and sizes tailored to specific applications. The most common types include:
  •  Standpipe Piezometers: These basic devices measure pore pressure using a filter tip and riser pipe connected vertically to the surface. Water seeps through the filter into the riser pipe, where water levels are gauged with an indicator.
  •  Vibrating Wire Piezometers: Ideal for boreholes, rock fills, or standpipes, these devices use a data logger to capture pore pressure readings via vibrating wires.
  •  Pneumatic Piezometers: Operated by gas pressure, these piezometers are installed in boreholes, large-diameter standpipes, and fills. Pressure readings are recorded with a pneumatic indicator.
The Water Level Logger is a versatile datalogger that monitors underground water levels using a submersible pressure transducer. Ideal for remote monitoring, it records over 200,000 readings with four unique options: fast, programmable interval, logarithmic, and exception. Available in multiple depth ranges (3 ft to 500 ft), it adapts easily for wellhead, stream, or other installations with standard hardware. Includes user-friendly graphical interface software for Windows, ensuring seamless data transfer to laptops or desktops.
A piezometer, whether a bore well or tube well, is exclusively used for measuring water levels by lowering a tape or automatic equipment. It also facilitates water sampling for quality testing as necessary. Installation guidelines for compliance with NOC include:
  •  Install the piezometer at least 50 meters away from any pumping well extracting groundwater.
  •  Ensure the piezometer diameter ranges from 4” to 6”.
  •  Align piezometer depth with that of the pumping well; additional piezometers can monitor shallow groundwater levels.
  •  Measure water levels monthly with precision up to centimeters, reported in meters to two decimal places.
  •  Use a sounder or Digital Water Level Recorder (DWLR) for accurate measurements.
  • Measure water levels only after nearby tube wells have ceased pumping for 4-6 hours.
  •  Provide coordinates, depth, and other details to integrate the piezometer into national and state groundwater monitoring systems.
  •  Monitor groundwater quality biannually, with samples analyzed by accredited labs.
  •  Display essential information at the piezometer site for easy reference and identification.
  •  Address specific safety and access requirements as needed.
For telemetry and non-telemetry piezometer monitoring solutions, Contact Vishal Borewell Drilling.

Electromagnetic water flow meter

A water flow meter is a device that measures the amount of water flowing through a pipe. There are several water flow meter technologies to choose from depending on the water measurement application, maintenance requirements, and budgetary terms. Each of these types of water flow meters has a unique principle of operation, specific application benefits, and overall cost-of-ownership.
 

Explore four primary types of water flow meters:

  •  Mechanical Water Flow Meter: This economical type measures flow through turbine rotation using designs like propellers or paddle wheels. It gauges flow by measuring water speed, causing a turbine or piston to rotate in proportion to volumetric flow rate.
  •  Vortex Volumetric Flow Meter: These meters use vortices formed around a sensor immersed in the flow. Each vortex passing by flexes a sensor tab, generating a frequency output directly linked to volumetric flow rate.
  •  Ultrasonic Flow Meter: By employing ultrasound, these meters measure fluid speed in the pipe. A transit-time method compares the time for ultrasonic pulses to travel downstream and upstream, calculating fluid velocity and volumetric flow rate accordingly.
  •  Electromagnetic flow meter: Using Faraday’s Law of Electromagnetic Induction, these meters measure fluid speed by generating voltage as liquid flows through a magnetic field. The voltage produced correlates with fluid movement, converted into volumetric flow rate by electronic processing.

contact Vishal Borewell Drilling for telemetry and non-telemetry water flow meters tailored to your needs.

Envirnment Consultancy

  •  Prohibition of Industries: New guidelines now prohibit new industry and mining projects in over-exploited zones. Existing industries, commercial units, and large housing societies must obtain a ‘no objection certificate’ (NOC).
  •  Exemption: Domestic consumers, rural drinking water schemes, armed forces, farmers, and micro & small enterprises (with withdrawals up to 10 m3 per day) are exempt from needing an NOC from the CGWB. The guidelines also promote the use of recycled and treated sewage water by industries. They include provisions for action against polluting industries and mandate digital flow meters, piezometers, and digital water level recorders.
  •  Compensation: Guidelines from the CGWB under the Jal Shakti Ministry mandate a minimum environmental compensation of ₹1 lakh for industrial, mining, and infrastructure users extracting groundwater without an NOC. Penalties can increase based on the amount of water extracted and the duration of the violation.
  •  Abstraction Charges: Residential apartments, group housing societies, and government water supply agencies in urban areas must now pay groundwater abstraction charges. Industries, mining operations, and infrastructure projects drawing groundwater in safe, semi-critical, and critical assessment units will also face abstraction charges based on extraction levels and assessment unit categorization.
To comply with regulations and ensure environmental responsibility:
  •  Install a high-quality Groundwater Monitoring Telemetry System with BIS/IS Standard digital flow meters.
  •  Notify authorities within 30 days of receiving CGWA NOC for telemetry system installation.
  •  Construct Piezometer Walls if drawing 10 cubic meters/day of groundwater.
  •  Position piezometers 50 feet from the abstraction point to cover aquifer and well zones.
  •  Obtain CGWA NOC before commercial groundwater extraction to avoid penalties.
  •  Calibrate flowmeters annually through authorized agencies.
  •  Monitor groundwater quality annually, submitting data to CGWA from NABL accredited labs.
  •  Monitor dewatering discharge rates using telemetry, reporting to CGWA.
  •  Consult CGWA for additional well installations in mining projects, submitting water quality reports.
  •  Renew NOC 90 days before expiry to avoid legal actions under Environmental Protection Act 1986.

According to CGWA guidelines, obtaining an NOC is mandatory if you extract over 10 cubic meters of groundwater for industrial use. Failure to install a cloud-based Groundwater Monitoring System may result in fines up to Rs 2 lakhs.

  • Ensure eligibility:
    Check CGWA’s Eligibility Criteria Form to determine if you qualify for an NOC. Provide details such as industry segment (Industrial, Infrastructure, Mining), water quality (Fresh or Saline), plant status (new or existing), and location. Visit CGWA’s Eligibility Criteria form for NOC details.
  • Apply for registration:
    Register as a new user by entering basic information (Name, Email ID, address proof, ID proof). Create a USER NAME and PASSWORD and keep your phone ready for OTP verification. Visit the New User’s Registration Form for NOC details.
  • Prepare your documents:
    Log in with necessary documents depending on your industry segment and groundwater usage. Choose “New Application” from the top menu, fill in details, and upload required documents for NOC approval.
  • After submission:
    Track your application status via CGWA’s official website. Download your approved NOC from the NOC Download Portal once issued. Post NOC issuance, install an IoT-based Groundwater Monitoring System within 90 days.

For assistance, contact us.

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