Deep Tube Well Company in Bangladesh

Last updated: 7 October 2026

A deep tube well company in Bangladesh designs, drills and completes wells that draw groundwater from deep aquifers, then installs the submersible pump that lifts it. Veritas handles well design, drilling, casing and screen, gravel packing, development, pump testing, water quality testing and pump installation for factories, housing projects and institutions.

For many factories, housing projects and institutions in Bangladesh, groundwater is the main water source. A well that is badly designed or poorly completed can pump sand, lose yield within a few years, or deliver water that is unsafe for its intended use. A well that is properly designed and tested gives a reliable supply for many years.

Veritas Technologies Ltd provides deep tube well design and installation as an engineering service. We start from your water demand and site conditions, use ground information such as a sub-soil investigation where available, supervise drilling and completion, and finish with a tested well and a correctly sized pump from our pump motor supply & installation service.

What Is a Deep Tube Well?

A deep tube well is a narrow, cased borehole drilled into a deep water-bearing layer (aquifer). The upper part of the well is lined with blank casing to keep out shallow water and loose soil. Opposite the aquifer, a slotted or wire-wound screen lets water in while holding back sand. A graded gravel pack around the screen acts as a filter, and a submersible pump lowered into the well lifts the water to the surface.

Shallow vs deep tube well

The table below compares the two common well types used in Bangladesh.

Who Needs a Deep Tube Well?

• Factories needing process water, boiler feed, cooling or washing water.
• Dyeing, washing and textile units with high daily water demand.
• Housing projects and apartment buildings outside reliable piped supply.
• Hospitals, schools, universities and other institutions.
• Commercial buildings and hotels wanting a secure secondary source.
• Agricultural and landscaping projects needing irrigation water.

How Is a Deep Tube Well Designed and Drilled? Step by Step

1. Assessment of water demand: daily volume, peak flow and intended uses, including whether the water will be used for drinking.
2. Desk study of local hydrogeology, nearby well records and any site investigation data.
3. Preliminary well design: target depth, drilling and casing diameters, materials and pump size.
4. Drilling by direct rotary (mud circulation) or reverse circulation, with soil samples collected and logged at regular depth intervals.
5. Final design based on the borehole log: screen position and length, slot size and gravel pack grading.
6. Installation of casing and screen, placement of gravel pack, and a sanitary seal near the surface to keep out contaminated water.
7. Well development by air-lift, surging or pumping until the water runs clear and sand-free.
8. Pump test to measure yield and drawdown, followed by water quality sampling.
9. Installation of the submersible pump, rising main, cable, well head and control panel, then commissioning.

How Are Casing, Screen and Gravel Pack Selected?

Casing

uPVC casing resists corrosion and is widely used for wells of moderate depth and diameter. Steel casing offers higher strength for deep or large-diameter wells but must be protected against corrosion, particularly where groundwater is aggressive or iron-rich.

Screen

Slotted uPVC screens are economical; wire-wound stainless steel screens give a larger open area and better resistance to clogging. Slot size is chosen from the grain size of the aquifer sand so that fine particles are held back without restricting flow.

Gravel pack

The gravel pack is a graded, clean, rounded filter material placed between the screen and the borehole wall. Correct grading stops sand from entering the well and protects the pump. Poorly graded or dirty gravel is a common cause of sand pumping and early well failure.

Pump Test and Water Quality Testing

A pump test confirms what the well can actually deliver. Typical tests include a step-drawdown test at increasing pumping rates, a constant-rate test, and a recovery test after pumping stops. The results give the sustainable yield and the pumping water level used to select the pump and set its depth.

Water quality must be checked before the well is put into service. Arsenic is a known groundwater concern in parts of Bangladesh, so it is a standard parameter. Other common parameters include iron, manganese, chloride or salinity in coastal areas, hardness, pH, total dissolved solids and bacteriological tests. Results are compared with national drinking water standards or with the quality needed for your process, and treatment is recommended where needed.

Pump and Power Supply for Your Well

The submersible pump and motor are sized from the pump test results and the delivery head to your overhead tank or treatment plant. The panel includes protection against dry running, overload and phase failure. For sites with unreliable grid supply, a standby generator keeps water flowing during outages, and for agricultural wells a solar irrigation pump system can reduce running costs.

Permissions and Local Requirements

Rules for installing a deep tube well differ between areas and depend on the purpose and size of the well. Check with the local authority before drilling; in WASA service areas a permission may be needed, and DPHE guidance may apply to tube well construction and siting. We can provide the technical details authorities usually request, such as location, depth, diameter and expected abstraction.

What Do You Receive?

• Well design summary with depth, diameters and materials.
• Borehole lithology log from drilling samples.
• As-built well completion drawing showing casing, screen, gravel pack and seal.
• Pump test records with yield, drawdown and recommended pumping rate.
• Water quality test results and treatment recommendations where needed.
• Pump and motor data sheets, panel wiring diagram and commissioning records.
• Operation and maintenance guidance for the well and pump.

What Does a Deep Tube Well Cost in Bangladesh?

No two wells cost the same. The main factors are depth and diameter, ground conditions, casing and screen material, gravel pack, development and pump test duration, water quality tests, pump and motor rating, control panel, power supply arrangements and site access for the drilling rig. Tell us your daily water demand, intended use and site location, and we will send a quotation.

Frequently Asked Questions