Water Tank Price in Kenya 2026: 1,500 to 10,000 Litre Plastic Tanks + Sizing Guide

Water tank prices in Kenya on Buy More Mall start at KSh 11,500 for a 1,500 litre tank and go up to KSh 68,000 for 10,000 litres. All are food-grade, double-layer plastic tanks. The 6,000 to 10,000 litre tanks come in black or blue with a 12-year warranty.

Water Tank Price List

Browse all tanks in Building Materials.

What Size Water Tank Do I Need?

1. Estimate daily use. Count the people and what the water is for (drinking, cooking, bathing, flushing, laundry, animals, garden). Your water bill in m³ ÷ 30 × 1,000 gives litres per day.
2. Decide how many days of storage you want: how long the supply usually goes off, or how long the dry spell lasts if you rely on rain.
3. Multiply: daily use × days = tank size. Round up to the next size.

Rainwater Harvesting: How Much Can Your Roof Collect?

Every 1 mm of rain on 1 m² of roof gives about 1 litre of water. A roof of 100 m² in a 20 mm storm can collect about 2,000 litres (a bit less after losses). That is why a good gutter system matters as much as the tank.

For roofing sheets, see Box Profile Roofing Sheet Prices.

Installation Tips

• A full tank is heavy: 1 litre of water weighs 1 kg, so a full 10,000 L tank weighs about 10 tonnes. The base must be flat, level and strong: concrete or well-compacted ground. For a raised tank, the stand must be designed for the full weight.
• Place the tank on a smooth, level base with no stones, which can crack the bottom.
• Fit a first-flush diverter or mesh on rainwater inlets to keep leaves and roof dirt out.
• Keep the lid closed to stop mosquitoes and algae. Dark tanks let in less light.
• Clean the tank at least once a year.

Is Tank Water Safe to Drink?

Stored rainwater or municipal water can pick up bacteria. For drinking, treat it with a filter and UV or an RO purifier. See UV Water Sterilizer Price and RO Water Purifier Price. To pump water up from the tank, see Booster Pumps & Pressure Controllers.

Not sure which one fits? Send us your details on WhatsApp or through the product page and we will help you choose.

Frequently Asked Questions

How much is a 10,000 litre water tank in Kenya?

KSh 68,000 on Buy More Mall.

How much is a 5,000 litre water tank in Kenya?

The 5,000 L Reliance tank is KSh 36,500.

How much is a 2,000 litre water tank?

KSh 16,500 on Buy More Mall.

How much water does 1 mm of rain give?

About 1 litre per square metre of roof. A 100 m² roof collects roughly 100 litres for every millimetre of rain, before losses.

Prices shown are regular prices on Buy More Mall. Many products are currently on offer, so open the product page to see today's price.

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