Short answer: for a family of four to five in Kerala, a 1000 litre tank is usually right. The simple rule is 135 to 200 litres per person per day, then round up for guests, power cuts, and borewell refill gaps.
- Formula: people in the home times 150 litres, rounded to the nearest available size.
- 1000 L is the most popular size for Kerala families of 4 to 5.
- Two smaller tanks often beat one big tank: one for kitchen, one for bathrooms.
- Loft and capsule tanks solve space problems, not supply problems.
- Share your family size with us on WhatsApp and we will confirm the right size.
The simple formula
A Kerala household uses roughly 135 to 200 litres of stored water per person per day for drinking, cooking, bathing, and washing. Multiply the number of people at home, add a buffer for guests and the days your well or borewell refills slowly, and you have your tank size.
Size guide
| Capacity | Ideal for |
|---|---|
| 500 L | Small family, 2 to 3 people |
| 750 L | Small to mid family |
| 1000 L | Family of 4 to 5 (most popular) |
| 1500 L | Larger family |
| 2000 L | Large home or small commercial |
| 3000 to 5000 L | Commercial and industrial |
Where each type fits
Overhead tanks supply your home by gravity, which is why they sit on terraces and Stilted platforms. Loft tanks fit inside attics above bathrooms for steady pressure. Capsule tanks squeeze into basements and narrow spaces where round tanks cannot. Our plastic water tank range covers all of these, from classic to marble-finish, and our stainless steel range comes in 500 L to 5000 L, vertical and horizontal.
When to go bigger
If your well refills slowly, if power cuts are common in your area, or if you host guests often, add one size of buffer. An oversized tank is only a problem if water sits too long without use, which is a cleaning question, not a buying question.