Borehole Drilling Cost in Kenya (2026)

Borehole drilling in Kenya is one of the most reliable ways to secure a long‑term water supply for homes, farms, institutions, and commercial properties. As water demand increases across the country, many clients ask: How much does it cost to drill a borehole in Kenya today?

At Milimani Drilling East Africa Ltd, borehole pricing is determined by geological, technical, and environmental factors. This guide explains each factor clearly and includes a live borehole cost calculator to help you estimate your project instantly.

Average Borehole Drilling Cost in Kenya (2026)

A fully completed borehole in Kenya typically costs KSh 800,000 – 2.5 million, depending on depth, geology, casing, pump system, and water treatment requirements.

Typical Per‑Meter Drilling Rates

• KSh 6,000 – 10,000 per meter
• 120m – 250m typical borehole depth
• Hard rock counties: KSh 8,000 – 10,000/m
• Soft formations: KSh 6,000 – 8,500/m

Key Factors That Determine Borehole Drilling Costs

1. Geological Formation

Geology determines the drilling method, speed, equipment, and cost.

Hard Rock Areas

• Require air drilling
• Slower penetration
• Higher fuel and compressor usage
• Higher per‑meter cost

Soft Sediment Areas

• Use mud rotary drilling
• Faster penetration
• Lower per‑meter cost

Why this matters: Hard rock consumes more energy and time, while soft formations require drilling mud and stabilization — both affecting cost differently.

2. Borehole Depth

• Shallow boreholes (80–120m): Lower cost
• Medium depth (130–180m): Moderate cost
• Deep boreholes (200–300m): High cost

3. Drilling Method

Air Drilling

• Ideal for hard rock
• Requires high‑pressure compressors
• Higher fuel consumption

Mud Drilling

• Ideal for loose formations
• Requires drilling fluids
• Higher fluid management cost

4. Casing Type & Size

• uPVC Class 9: KSh 2,500–3,200/m
• uPVC Class 10: KSh 3,000–3,800/m
• Steel casing: KSh 3,500–6,500/m

5. Pump Type & Power Source

Electric Pump

• KSh 120,000 – 250,000
• Ideal for homes with stable KPLC supply

Solar Pump

• KSh 250,000 – 600,000
• Ideal for farms and off‑grid locations
• Zero running cost

6. Water Treatment Needs

• UV sterilisation: KSh 50,000 – 150,000
• Iron/Manganese removal: KSh 80,000 – 200,000
• Defluoridation: KSh 150,000 – 350,000
• Reverse Osmosis (RO): KSh 250,000 – 800,000

7. Site Accessibility & Mobilization

Mobilization varies based on distance, terrain, and rig access.

8. Wellhead Completion

• Apron construction
• Wellhead protection
• Drainage
• Security covers