Industrial borehole - the backbone of water supply

1. What is an industrial borehole?

An industrial borehole is a deep high-capacity well that taps into confined aquifers or productive groundwater sources. These aquifers have protection from surface contamination and often yield cleaner safer water. Industrial boreholes go deeper than domestic ones ranging from 100 to 250 meters, based on the geology of the area.

These boreholes extend to greater depths than regular domestic wells and employ stronger materials with wider diameter casings. They aim to deliver steady high flow rates while reducing risks of contamination or seasonal failures. Industrial boreholes stand apart from domestic ones not just in depth, but also in their design, which puts emphasis on output, backup systems, and water treatment. Due to their depth and required materials, they are more expensive to build but offer unmatched reliability and long-term value.

1.1 An industrial borehole includes:

• A geophysical survey to spot a good groundwater source
• Big drilling rigs that can go deep into rock or sediment
• Tough casings often steel, to stop collapse and pollution
• Strong submersible pumps that fit the depth and need
• Water storage setups, like big tanks and pipe networks
• Water quality checks and treatment, because clean and pure water is necessary for large scale operations.

2. Why Industrial boreholes

2.1 High output

Industrial boreholes can make over 10,000 liters of water each hour, based on the aquifer. This makes them great for places that need lots of water, like drink bottling plants, community water plans, and hotels.

2.2 Safe from pollution

Sealed aquifers stay protected from surface dirt like oil spills, septic leaks, or farm waste. This keeps water quality steady and safe for factory use, processing, or even drinking after testing.

2.3 Year round availability

Shallow wells often run dry in Nigerias during dry season up North. But industrial boreholes tap deeper aquifers that stay active all year long.

2.4 Lasts a long time

With good care, a deep borehole can work for 20 to 50 years or more. Regular upkeep, expert testing, and pump swaps keep the system running well for decades.

3. Cost of drilling industrial borehole in Nigeria

The cost for industrial borehole is significant, but justified by its scale and benefits. The price depends on factors like depth, geology, casing materials, pump capacity, and site logistics. Current local market sources suggest that drilling an industrial borehole costs between N3 million and N10 million, based on depth, terrain, materials, and pumping capacity.

Drilling per metre for machine rigs in Nigeria typically ranges from N25,000 to N30,000 per metre, depending on ground conditions. This pricing appears in several local drilling guides and company information.

For industrial or deep boreholes, the total cost often includes geophysical survey, drilling, quality casing, pump installation, and initial water treatment, amounting to several million naira. Local guides indicate that heavy-duty or commercial installations can exceed N3 million and may be higher for deep wells with high-capacity pumping systems.

Some government and state initiatives offer public pricing benchmarks. For instance, Oyo State’s cost control policy provides a drilling reference price per metre for private sector and community projects, suggesting that per metre pricing helps in budget planning.

For a depth of 100 metres, the cost of drilling, casing, and a medium-duty industrial pump typically lands between N3 million and N5 million.

For a depth of 150 metres in hard rock or complex formations, expect costs between N5 million and N8 million, especially when heavy steel casing and high-capacity pumping are included.

Very deep wells or multi-bore configurations, which need redundancy and high yields, can surpass N10 million.

4. Additional Cost Drivers

4.1 Survey and siting

A geophysical survey helps identify the best drilling location, avoiding dry or low-yield areas.

4.2 Casing and development

Steel casing, while durable, is costlier. Proper sealing and gravel packing further increase expenses.

4.3 Storage system

Large water tanks and piping are necessary for efficient water storage and distribution.

4.4 Water treatment

Testing for impurities like iron, manganese, pathogens, or hardness and applying treatment ensures water quality.

4.5 Maintenance

Routine testing, pump servicing, and occasional re-development help prolong the system’s life.

5. Exemplary breakdown of the cost elements  

• Geophysical survey: N100,000 to N300,000  
• Drilling per metre: N18,000 to N30,000 per metre  
• Casing and gravel Pack: N500,000 to N2 million, depending on size and material  
• Pump installation: N500,000 to N2 million for heavy-duty submersible pumps  
• Plumbing and storage tank: N300,000 to N1 million

The final cost also varies based on soil or rock formation encountered during drilling. Harder terrains require heavier machinery and take longer to drill.

6. Industrial boreholes are essential for:  

• Bottled and sachet water factories  
• Hotels and resorts  
• Manufacturing and food processing plants  
• Hospitals and universities  
• Residential estates and communities  
• Agricultural irrigation systems

7. Conclusion

Industrial boreholes are substantial investments that deliver dependable water for high demand users. The capital cost is higher than for domestic wells because of depth, casing, pumping and monitoring requirements. Properly designed and maintained industrial systems provide reliable supply for decades and are often the most cost effective option for businesses, estates, large farms and community water schemes.