Water Tank Installation in Nairobi & Kenya — Overhead & Underground
Supply and installation of Kentank, Roto, and TopTank tanks, steel towers, underground tanks, booster pumps, and rainwater harvesting, in Nairobi and nationwide.
Types of Water Tanks We Install in Kenya
Overhead Tanks
Elevated water storage tanks for gravity-fed systems. Perfect for residential and commercial buildings where constant water pressure is needed without a pump.
- 500L – 10,000L capacity
- Polyethylene and steel options
- UV-resistant food-grade materials
- Tank stand/tower construction included
Underground Tanks
Below-ground water storage for space-saving, high-capacity storage. Ideal for estates, commercial properties, and areas with limited overhead space.
- 1,000L – 50,000L capacity
- Concrete and reinforced plastic options
- Anti-bacterial lining fitted
- Stays cool — protects water quality
Water tank services
Everything from a single household tank to a 200,000-litre institutional reservoir. Each service has its own prices, sizing guide, and FAQs.
Our Water Tank Installation Process
Site Assessment
Evaluation of your location, water demand, soil type, and installation requirements.
Tank Selection
We recommend the right tank type, size, and material for your needs and budget.
Professional Installation
Expert installation with proper plumbing connections, support structures, and sealing.
Testing & Handover
Full system test, water quality check, and written maintenance guidelines provided.
Water Tank Prices in Kenya (2026)
Tank-only retail prices by brand, including VAT, Nairobi zone (updated mid-2026).
| Capacity | Kentank | Roto | TopTank | Best for |
|---|---|---|---|---|
| 1,000 L | 7,000 – 12,000 | ≈ 13,900 | 9,100 – 13,000 | Kitchen, small apartment, top-up storage |
| 2,000 L | 13,500 – 20,000 | ≈ 24,500 | 16,000 – 20,500 | Bedsitters, 1–2 bedroom homes |
| 3,000 L | 17,500 – 27,000 | ≈ 33,000 | 18,000 – 28,000 | Standard family home (4–6 people) |
| 5,000 L | 33,000 – 45,000 | ≈ 62,000 | 33,500 – 58,000 | Large homes, small rentals, rainwater |
| 10,000 L | 75,000 – 100,000 | ≈ 126,000 | 75,500 – 105,000 | Apartments, schools, churches, farms |
| 24,000 L | 280,000 – 380,000 | Quote | ≈ 382,000 | Institutions, estates, bulk storage |
Supply & installation packages
| Package | What is included | Typical total (KES) |
|---|---|---|
| 1,000 L ground tank | Tank, concrete base, inlet/outlet, float valve, connection | 18,000 – 30,000 |
| 2,300 L ground tank | Tank, base, fittings, connection to house supply | 28,000 – 45,000 |
| 5,000 L ground tank | Tank, reinforced base, fittings, overflow, connection | 50,000 – 85,000 |
| 10,000 L ground tank | Tank, reinforced slab, fittings, valves, connection | 100,000 – 160,000 |
| Tank + booster pump | 2,300–5,000 L tank with automatic pressure pump | 55,000 – 130,000 |
| 6 m steel tower + tank | 5,000–10,000 L plastic tank on fabricated steel stand | 180,000 – 400,000 |
| Underground poly tank | 10,000 L buried tank, excavation, backfill, pump | 140,000 – 190,000 |
| Underground concrete tank | 10,000 L reinforced concrete, waterproofed | ≈ 260,000 |
Large tanks, towers & systems
Installed project estimates for larger storage, including labour, plumbing connections, fittings, and a workmanship warranty.
| Category | Typical Size Range | Estimated Cost (KES) | Notes |
|---|---|---|---|
| Overhead PVC / Plastic Tanks | 1,000L – 10,000L | KES 9,000 – 141,000 | Ground or rooftop mounted, no tower. Larger institutional sizes (20,000L+) cost more. |
| Elevated Tank Towers | 3m – 15m height | KES 150,000 – 2,500,000+ | PVC, steel, or GRP tank on a steel stand. Price driven mainly by tower height and tank capacity. |
| Steel Tanks | 5,000L – 200,000L+ | KES 100,000 – 6,000,000+ | Pressed/galvanized, ground-mounted. Scales sharply with capacity. |
| GRP Tanks | 3,000L – 49,000L+ | KES 500,000 – 1,000,000+ | Sectional, ground/institutional use. Very large custom units need a project-specific quote. |
| Underground Concrete Tanks | 5m³ – 100m³+ | KES 200,000 – 2,500,000+ | Driven by excavation, reinforced concrete, and waterproofing. Scales with depth and reinforcement. |
| Septic Tanks | Residential – institutional | KES 150,000 – 600,000+ | Standard concrete/masonry construction. Institutional/commercial sizes cost more. |
| Biodigesters | Residential – institutional | KES 80,000 – 500,000+ | Eco-friendly septic alternative; no exhausting required. Cost scales with user capacity and site conditions. |
| Water Reservoirs | 50m³ – 200m³+ | KES 1,500,000 – 6,000,000+ | Bulk institutional storage. Scales with capacity, material choice, and foundation works. |
Why Choose TopDrain for Water Tank Installation?
- Licensed Professionals: Certified installers with proven experience across Kenya
- Quality Materials: Premium tanks with manufacturer warranties from trusted brands
- Workmanship Warranty: All installations backed by our written guarantee
- Fast Installation: Most jobs completed in 1–4 days with minimal disruption
- Nationwide Service: We cover Nairobi, Mombasa, Kisumu, Nakuru, and all regions
- Site assessment: No obligation — we assess your site and give a clear quote
Water Tank Maintenance Services in Kenya
A poorly maintained tank can contaminate your water supply. Our regular maintenance service keeps your tank clean, safe, and performing at full capacity. We recommend a clean every 6–12 months.
- Regular Cleaning: Remove sediment and disinfect the tank interior to WHO standards
- Inspection Services: Check for leaks, cracks, UV damage, and structural issues
- Filter Replacement: Replace inlet filters, screens, and first-flush devices
- Plumbing Repairs: Fix leaking valves, float switches, and connection faults
- Water Quality Testing: On-site testing to confirm water meets safe drinking standards
Water tank installation areas in Kenya
Nairobi Region
- Nairobi CBD
- Westlands
- Karen
- Runda
- Kiambu
- Thika
- Ruiru
Coast Region
- Mombasa
- Kilifi
- Malindi
- Diani
- Watamu
Central Kenya
- Nyeri
- Kirinyaga
- Murang'a
- Thika
- Machakos
Other Regions
- Kisumu
- Nakuru
- Eldoret
- Meru
- Kakamega
FAQs — water tank installation in Nairobi & Kenya
How much does water tank installation cost in Nairobi?
A 1,000-litre plastic tank installed on a base with fittings costs about KES 18,000–30,000, a 5,000-litre tank KES 50,000–85,000, and a 10,000-litre tank KES 100,000–160,000. Tank towers start from about KES 180,000 and underground concrete tanks from about KES 155,000. See the full 2026 water tank price guide, or contact us for a fixed, VAT-inclusive quote.
How long does water tank installation take in Nairobi?
Most residential overhead tank installations are completed within one day. Underground tank installations typically take 2–4 days, depending on the excavation required and site conditions. We confirm the timeline during your site assessment.
What is the best tank size for a 3-bedroom house in Kenya?
For a household of 4–6 people, we typically recommend a 2,000–3,000 litre overhead tank for daily gravity-fed use, or a 5,000-litre underground tank for longer storage. Our installers will advise the right size based on your family size, water usage habits, and the reliability of your mains supply.
Can TopDrain install water tanks anywhere in Kenya?
Yes. We install water tanks across Nairobi and all major regions in Kenya, including Mombasa, Kisumu, Nakuru, and Eldoret. Call +254 702 263 360 to confirm availability in your location.
What types of water tanks do you install in Nairobi?
We install overhead tanks (500L–10,000L in polyethylene or steel), underground tanks (1,000L–50,000L in concrete or plastic), rainwater harvesting tanks with first-flush diverters, and large-capacity borehole storage tanks for residential, commercial, and institutional properties.
Do I need a permit to install a water tank in Kenya?
For standard residential overhead tanks, no permit is typically required. Large underground tanks or tanks on commercial premises may require county government approval. Our team will advise you on any regulatory requirements during the site assessment.
How often should I clean my water tank in Kenya?
We recommend cleaning your water tank at least once every 6–12 months to prevent sediment build-up, algae growth, and bacterial contamination. TopDrain offers a scheduled maintenance and tank cleaning service across Kenya — call us to set up a plan.
Can you install a tank on an existing stand or tower?
Yes, provided the existing stand is structurally sound and correctly sized for the new tank's weight when full. Our team inspects the stand before installation and will advise if reinforcement or a new stand is required.
Ready for water tank installation?
Site assessment across Nairobi and Kenya — clear quote before we start.