The Ultimate Guide to Finding Affordable Water Tanks in Kenya: Price Comparison and Expert Tips
Water Tanks in Kenya: Sizes, Prices & How to Choose the Right One
Plastic, steel, or underground? This guide covers tank types, sizing for your household or farm, and the common problems that shorten a tank's life.
A water tank is one of the highest-value purchases a Kenyan household or farm can make. It determines how long you can go between KPLC outages, how well you survive dry seasons, and how much you pay for water delivery. But with tanks ranging from 100 litres to 50,000 litres — and wildly different quality between brands — choosing correctly matters.
Types of Water Tanks Available in Kenya
1. Plastic (Polyethylene) Tanks
The most common type for domestic and farm use. Available in vertical, horizontal, and slimline designs, in sizes from 100L to 24,000L. Quality varies enormously — cheap tanks use thin plastic and degrade in UV light within 2–3 years, while quality tanks (Roto, Kentank, Silafrica) last 10–15 years with proper installation.
2. Galvanised Steel Tanks
Used mainly for larger commercial and industrial storage (10,000L+). Cost more than plastic but handle higher temperatures better. Common on tea and coffee farms for processing water.
3. Underground / Underground-Moulded Tanks
Buried or partially buried tanks keep water cooler and free up surface space. Ideal for urban homes with limited yard area, but installation is more expensive and requires proper anchoring to prevent the tank from floating in high water tables.
Typical Water Tank Prices in Kenya (2025)
| Size | Typical Price Range | Best For |
|---|---|---|
| 100L – 500L | KSh 3,500 – 12,000 | Small household backup, caravan, drinking water reserve |
| 1,000L – 2,000L | KSh 12,000 – 30,000 | Small family home, apartment backup |
| 5,000L – 10,000L | KSh 45,000 – 120,000 | Standard household, small farm, restaurant |
| 10,000L – 24,000L | KSh 90,000 – 280,000 | Large family, farm irrigation, commercial building |
| 24,000L+ (steel or heavy-duty) | KSh 250,000 – 900,000+ | Farm, estate, factory, borehole storage |
How to Size Your Water Tank
A rough rule: calculate your household or farm daily consumption, then multiply by the number of days you want to be able to go between refills or rain.
- Household: A person uses about 50–80 litres per day for drinking, cooking, cleaning, and bathing. A family of 5 therefore uses about 250–400 litres/day. A 5,000L tank gives roughly 12–20 days of buffer.
- Livestock: A cow drinks 40–60 litres/day; goats and sheep 5–10 litres. Multiply by your herd size.
- Irrigation: Multiply the water requirement per acre by the number of acres and the days between irrigation cycles.
Common Water Tank Problems & Solutions
1. Tank is leaking at the base or seams
Most likely causes: UV degradation of the plastic (common in cheap tanks), poor welding at the seams, or physical damage.
Fix: Small cracks can be repaired with a plastic welding kit. Major leaks at the base or around fittings usually mean the tank is beyond repair. The best prevention is buying a quality tank in the first place — cheap tanks often leak within 2 years.
2. Water tastes or smells bad
Most likely causes: Algae growth (from sunlight getting through translucent plastic), bacterial contamination, or a new tank that hasn't been flushed.
Fix: Choose opaque or dark-coloured tanks to block sunlight. If the tank has been sitting with water for months, drain and clean with a mild chlorine solution. For new tanks, flush 2–3 times before drinking the water.
3. Water pressure is too low
Most likely causes: Tank is not raised high enough above the outlets, or the outlet pipe is too narrow.
Fix: Raise the tank on a tower or stand — every 1 metre of height gives roughly 0.1 bar of pressure. If raising isn't possible, a booster pump solves the problem. See our water pumps range for options.
4. Tank is cracked in hot weather
Most likely cause: Thermal expansion and contraction, especially in cheap plastic tanks without UV stabilisers.
Fix: Don't fill the tank to 100% capacity in very hot weather — leave a small air gap. Buy UV-stabilised tanks for outdoor installation.
Frequently Asked Questions
How long does a plastic water tank last in Kenya?
A quality tank (Roto, Kentank, Silafrica) lasts 10–15 years if installed correctly and not exposed to direct sun for long periods. Cheap tanks often fail within 2–5 years.
Should I buy a black tank or a white one?
Black or opaque tanks are better for drinking water because they block sunlight and prevent algae growth. White or translucent tanks are sometimes cheaper but are more prone to algae.
How high should I raise my water tank?
The standard is to get the tank base at least 3 metres above the highest tap or shower in the building. This gives roughly 0.3 bar pressure, which is sufficient for most domestic use.
Do I need a pump with my water tank?
Only if your tank is at ground level or below the outlets. If the tank is properly raised on a stand, gravity is enough for most domestic use. A pump is needed for irrigation, long pipe runs, or when you want mains-level pressure.
Can I bury a plastic water tank?
Only if it is designed for underground installation. Standard above-ground tanks will collapse under the weight of backfill and soil pressure. Underground tanks are usually moulded thicker and shaped to resist soil pressure.
What size tank do I need for a family of 4?
A 5,000L tank is the most common choice for a family of 4–6 in Kenya. It gives roughly 12–15 days of buffer at 350 litres/day, which covers most mains supply interruptions.
What to Do Next
If you are unsure about the right size for your household or farm, send us a message on WhatsApp with your daily water use and we will recommend the correct capacity and type.
Browse our current water tank range for plastic, steel, and underground options.
Not sure which part or model fits your setup? Send us your equipment or requirement and we'll point you in the right direction.
Prices and stock change - message us for today's rate and availability.
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