Free tool
Water tank & pipe sizing
Size the overhead tank, the sump and the pipework for a household, based on how many people actually live there.
Storage and pipe sizes
Daily water requirement
675 L
5 people at 135 litres each
| Storage | Recommended |
|---|---|
| Overhead tank | 750 litres |
| Underground sump | 1500 litres |
| Pipe run | Size |
|---|---|
| Borewell or municipal inlet to sump | 1 inch |
| Sump to overhead tank (pump delivery) | 1 inch |
| Overhead tank down-take (main) | 1 inch |
| Floor distribution lines | 3/4 inch |
| Branch lines to taps and fittings | 1/2 inch |
| Soil and waste (SWR) | 4 inch main, 2 inch branches |
- Figures assume normal domestic use. Add capacity if there is a garden, livestock or frequent guests.
Tank sizes are snapped to capacities actually sold, and pipe sizes follow common domestic practice. Bore yield, municipal supply timing and how many outlets run at once all shift the answer — worth talking through before you buy.
Price the tanks and piping
We stock Sintex tanks and Ashirvad, Prince, Finolex and Sudhakar piping. Send these figures and we'll quote the full plumbing requirement.
Common questions
- What size water tank does a house need?
- Domestic planning normally allows 135 litres per person per day. For a family of five that is about 675 litres a day, which usually means a 750 to 1000 litre overhead tank with a larger sump underneath as the real buffer.
- What pipe sizes are used in a house?
- Typically a 1 inch inlet and pump delivery, a 1 inch or 3/4 inch down-take from the overhead tank depending on how many bathrooms draw at once, 3/4 inch distribution on each floor and 1/2 inch branches to individual taps.
- Which pipe brands do you stock?
- Ashirvad, Prince, Finolex and Sudhakar for CPVC, UPVC and SWR systems, and Sintex for water storage tanks.
- Do you give a GST bill?
- Yes. Sky Enterprises is GST registered under 37BULPM3692N1ZQ and issues a proper tax invoice on every purchase, which contractors and builders need for input credit.
- Do you deliver to site?
- We deliver within 10 km of the shop, covering Etcherla and the neighbouring mandals of Srikakulam district. Tell us where the site is and we'll confirm.
- What are your timings?
- Monday to Saturday, 9 AM to 9 PM. Sunday, 9 AM to 1 PM. The late closing suits contractors collecting material after finishing on site.
- Do you supply contractors on credit?
- We offer flexible credit terms to contractors who buy from us regularly. Terms depend on the relationship, so come and talk to us about it.
Need a price?
Send us your list — typed, or a photo of a handwritten one — and we'll price it up. Delivery within 10 km, GST bill on every purchase.