If you are planning to install a deep tubewell in Bangladesh, understanding the ideal depth is the most important step. This Deep Tubewell Depth Guide in Bangladesh
explains everything — recommended depth, soil profile variations, groundwater levels, cost ranges, and expert advice.
To learn the full installation process, you may also check our Deep Tubewell Installation Process.
Why Tubewell Depth Matters in Bangladesh
Bangladesh has diverse geological conditions. Soil layers change from area to area — sand, clay, gravel, silt, and mixed formations. The deeper the layer, the safer the groundwater extraction, especially in areas with low water tables.
Key Depth Factors
- Soil Composition → clay, sandy soil, hard rock
- Aquifer Level → shallow, semi-deep, deep
- Arsenic Risk Zone → Department of Public Health Engineering (DPHE)
- Water Demand → household, commercial, agricultural
- Pump Capacity → 1 HP, 1.5 HP, 2 HP
- Pipe Diameter → 1.5”, 2”, 3”, 4”
Recommended Deep Tubewell Depth in Bangladesh (Region-Wise Guide)
Sylhet Division (Sylhet Sadar, Beanibazar, Golapganj)
- Typical depth: 200–500 ft
- Why: Mixed sand & gravel layer
- Some hillsides provide water at 150–250 ft
Chattogram Division
- Typical depth: 350–700 ft
- Heavy clay + hilly formations affect drilling
Rajshahi Division
- Typical depth: 300–550 ft
- Water table is generally stable
Barishal & Khulna Division
- Typical depth: 250–400 ft
- Coastal aquifers need careful layer selection to avoid salinity
Ideal Depth Based on Water Usage
Household (Regular Family Use)
- Recommended: 250–400 ft
- Ensures stable water pressure + low maintenance
Commercial (Restaurants, Shops, Offices)
- Recommended: 400–650 ft
- Higher demand needs a strong aquifer layer
Industrial or Agricultural Use
- Recommended: 600–1200 ft
- Requires large volume extraction
Deep Tubewell Depth Cost in Bangladesh (2026 Update)
Cost varies based on depth, soil hardness, pipe size, and machine type.
General Cost Breakdown
| Depth (Feet) | Estimated Cost (BDT) | Suitable For |
|---|---|---|
| 200–300 ft | 15,000 – 30,000 | Household |
| 300–500 ft | 30,000 – 55,000 | Household + Commercial |
| 500–800 ft | 55,000 – 90,000 | High-demand users |
| 800–1200 ft | 90,000 – 170,000+ | Industrial |
Signs Your Tubewell Must Be Installed Deeper
- Water flow decreases in dry season
- Pump struggles to lift water
- Muddy or sandy water
- Low pressure in multiple taps
- Air bubbles in water line
If you face any of these issues, visit our Deep Tubewell Repair & Maintenance Page to know about the exact solution.
Best Pipe Size for Deep Tubewell
Recommended Options
- 2-inch pipe → small family use
- 3-inch pipe → medium commercial use
- 4-inch pipe → high-demand business/industry
- Stainless steel screens recommended for strong aquifers
Best Depth for Safe and Arsenic-Free Water
According to DPHE and WHO, deep layers (300 ft+) have lower arsenic levels.
You can verify official arsenic zones from the DPHE website.
How AMB Water Technology Ensures the Best Tubewell Depth
We follow a scientific procedure:
Step-by-Step Method
- Soil test & bore logging
- Identifying aquifer depth
- Selecting pipe size & materials
- Deep boring with modern rotary rig
- Installing pump (HP based on depth)
- Final water quality test
This ensures long-term water availability and strong performance.
Final Expert Recommendation
For most parts of Bangladesh, the safe deep tubewell depth is 300–650 ft.
However, geological variation means each area requires a custom assessment.
If you want an expert site visit or exact depth suggestion for your location in Bangladesh, contact us at AMB Water Technology