Nairobi's Leading Water & Solar Contractor
Vajra Drill has been serving Nairobi homes, businesses, and institutions for over 20 years. With our depot on Mombasa Road and a fleet of rigs permanently based in the city, we offer the fastest mobilisation times for borehole drilling, solar installation, water treatment, and tank supply in Nairobi.
Whether you are in Karen, Westlands, Ruaka, Syokimau, Kiambu Road, or Eastlands — our teams have drilled boreholes and installed solar systems in every corner of Nairobi County and its expanding satellite towns. We understand the local geology, the county council permit processes, and the NWSC supply pressures that make private water solutions a necessity for many Nairobi properties.
Nairobi Underground: What to Expect
Nairobi sits on a complex mix of volcanic rocks, phonolites, and alluvial sediments deposited over millions of years of Rift Valley geological activity. This geology directly affects borehole depth, yield, and water quality across different parts of the city.
Northern Nairobi (Westlands, Parklands, Runda, Gigiri)
Predominantly phonolite and trachyte volcanic rocks. Boreholes typically hit productive fracture zones at 80–150m depth. Yields of 2–8 m³/hr are common. Water is generally good quality with moderate hardness.
Central & CBD Areas (Upper Hill, Kilimani, Lavington, Ngong Road)
Mixed volcanic and sedimentary geology. Drilling depths range 100–200m. Some areas have deep aquifers in fractured basement rock. Fluoride levels occasionally elevated — water testing is essential.
Southern & Eastern Nairobi (Syokimau, Athi River, Embakasi, Ruai)
Transitional zone into Athi Plains sediments and basement rock. Boreholes at 120–250m depth. Higher suspended sediment loads — quality treatment systems recommended for all these sites.
Satellite Towns (Ruaka, Kiambu Road, Thika Road, Rongai)
Variable geology spanning Nairobi County into Kiambu. Shallow aquifers often available at 60–120m. High-density residential development means strong demand and competitive borehole access — early drilling recommended.
Our Services in Nairobi
We offer the complete spectrum of water and solar solutions for every Nairobi property type — from a single-family home in Kahawa West to a multi-storey commercial block in Westlands.
Borehole Drilling
Domestic and commercial borehole drilling across all Nairobi constituencies. Full WRA licensing, hydrogeological survey, pump test, and permit handover. Same-week mobilisation available.
Solar Power Installation
Grid-tied and off-grid solar systems for Nairobi homes and businesses. Cut KPLC bills by 60–90%. Includes roof assessment, panel mounting, inverter wiring, and NET metering registration.
Water Treatment
Reverse osmosis, UV sterilisation, iron removal, and fluoride reduction systems sized for domestic and commercial applications. Essential for many Nairobi borehole sites where water quality varies.
Water Storage Tanks
Supply and installation of HDPE and GRP tanks from 1,000 to 200,000 litres. Elevated steel tank stands, underground reservoirs, and full reticulation pipework for estates and apartments.
Solar Water Heating
Flat-plate and evacuated tube solar water heaters for Nairobi homes and hotels. Reduce LPG and electric heating costs by up to 80%. Full installation with backup element included.
Solar Backup & Battery Systems
Lithium and lead-acid battery backup systems to keep your appliances running during Nairobi's frequent power outages. Sizes from 2kWh home backup to 50kWh+ commercial UPS systems.
Areas We Cover in Nairobi
Our teams operate in all 17 Nairobi constituencies as well as the rapidly growing satellite towns and peri-urban areas on Nairobi's borders.
Nairobi FAQs
Borehole depths in Nairobi typically range from 80m to 250m depending on location. Northern Nairobi (Westlands, Runda, Gigiri) often yields water at 80–150m in fractured phonolite. Southern and eastern areas (Syokimau, Embakasi, Athi River) generally require 150–250m to reach productive aquifers. We always conduct a hydrogeological survey before drilling to target the most productive zone.
A basic Nairobi borehole (drilling, casing, and development only) typically costs KSh 350,000–700,000 depending on depth and location. A complete turnkey system — including submersible pump, rising main, control panel, 10,000L tank, and reticulation — ranges from KSh 750,000 to KSh 2,000,000+. We provide free, itemised quotations after a site visit.
Nairobi borehole water quality varies significantly by location. Many northern and central Nairobi boreholes yield excellent quality water with only basic treatment needed. Some areas — particularly southern and eastern Nairobi — may have elevated fluoride, iron, or coliform contamination. We conduct full KEBS-accredited chemical and bacteriological testing on every borehole we drill, and recommend treatment systems where needed.
You require a Water Resources Authority (WRA) abstraction licence for any borehole in Kenya, including Nairobi. Some developments may also require Nairobi Water and Sewerage Company (NWSC) notification. We handle all WRA permit applications and documentation as part of our standard service. Drilling without a permit risks prosecution and borehole sealing under the Water Act 2016.
A typical 3–4 bedroom Nairobi home with standard appliances (lights, TV, fridge, phone charging) usually requires a 3–5kW system. Homes with air conditioning or electric cookers need 8–15kW. For backup during outages, add a battery bank sized to cover 4–8 hours of critical loads. We conduct a free energy audit before recommending system sizes.