Summary
- Triple-layered HDPE water tanks are the ideal water tank solution for most Indian homes because of their durability, cleanliness, UV protection, and cost-effectiveness.
- Give each person about 135 litres of water per day; a 1,000-litre tank is likely to be needed for a family of four.
- The common Vastu guidelines are to place an underground sump in the north-east and an overhead tank in the west/south-west.
The choice of the water tank should be based on the material, storage capacity, availability of water, and location for most Indian homes. The most typical is the layered plastic container.
The size should be chosen in accordance with water usage and backup source. This guide will discuss the basic types of water tanks, suitable tank size, cost range, and placement of water tanks based on Vastu.
Types of Water Tanks by Material
In India, the most crucial materials used for water tanks are plastic, stainless steel, RCC, and FRP. The most cost-effective solution, as well as the most easily installed solution, is a multi-layer HDPE plastic water tank, which is rust-proof.
Let's take a look at the most common water tank material options:
| Material | Pros | Cons | Best for |
|---|---|---|---|
| Plastic (HDPE / Sintex-type) | Affordable, light, rust-proof, easy to fit | Low-quality tanks may weaken under strong sunlight | Most homes, overhead tanks, and suitable sump models |
| Stainless steel | Hygienic, durable, no algae | Costlier, heavier | Homes where hygiene and long life are priorities |
| Concrete / RCC | Very durable, large capacity | Costly to build, fixed, can leak if cracked | Large underground sumps |
| Fibreglass (FRP) | Strong, corrosion-proof | Costlier and less common for homes | Industrial and special applications |
Layer Configurations and Quality Features
The triple-layered water tank would be suitable for most of the houses in India. It has the benefits of being cheap, durable, and sanitary. Tanks with four layers or anti-microbial tanks are even more protective and are typically more expensive. The most important layer configurations and quality features to look for are listed below:
- Single-layer tanks: This is the least costly. But algae can grow more, and heat can also be a problem.
- Triple-layer tanks: These are the ones that are used in Indian households. The dark middle layer will help to reduce the sunlight's impact and reduce algae issues.
- Four-layer tanks: Add more UV, insulation, or strength protection (as specified by the manufacturer).
- Antimicrobial tanks: These employ an inner coating that will inhibit the growth of microorganisms. These typically are more expensive than regular layered tanks.
- Food-grade tanks: These use material suitable for storing household water.
Overhead vs Underground (Sump) Tanks
An overhead water tank supplies water through gravity, while an underground sump stores a larger quantity of water. Most Indian homes use both systems together for a reliable daily water supply.
The main differences are the following:
- Overhead tanks deliver water pressure and are gravity-fed. There should be a pump in underground sumps.
- Regular use of overhead tanks for storage. Either municipal or tanker water will be used to fill the sumps.
- Water temperature in overhead tanks can get too high during the summer months. Generally, underground sumps are found to be cool.
- Overhead tanks usually have a capacity of 500-5,000 litres. There is a lot more to be had in underground sumps.
- Overhead tanks can be easily and cheaply installed. Underground sumps must be excavated, waterproofed, and constructed.
Our Basement Waterproofing Guide will help you to learn the best way to waterproof and prevent leakage in the basement and around it.
Popular Water Tank Brands in India
The most popular and trusted brands in India are Sintex, Supreme Industries, Plasto, and Ashirvad water tanks. These companies will be able to handle capacities between 500 litres and above 10,000 litres.
These are the leading brands that you can look for:
| Brand | Known for |
|---|---|
| Sintex | Wide range of overhead, underground, loft, and insulated tanks |
| Ashirvad | Pure three-layer and WeatherGuard four-layer tanks |
| Supreme | Siltank three-layer and four-layer overhead tanks |
| Plasto | Multi-layer overhead and underground storage tanks |
| Astral | Cleo four-layer and Vito three-layer tanks |
Many buyers use the term Sintex tank when searching for plastic water tanks. However, other brands also offer comparable multi-layer options at different price points.
Before buying, compare:
- Number of layers.
- ISI mark, where applicable.
- UV protection.
- Warranty.
- Tank capacity.
- Price per litre.
Do not choose a water tank only by brand name. Compare the required features, capacity, and warranty for your home.
Water Tank Sizing Guide: How Many Litres Do You Need?
For the majority of Indian households, the average is 135 litres of water per person per day. Select a water storage tank that will have a minimum capacity of one day's water supply.
The basic guideline is as follows:
Water requirement = Number of people × 135 litres per day
For example, a family of four needs:
4 × 135 litres = 540 litres per day
Four people will thus find a 1,000-litre water tank to be a reasonable size. It offers additional storage in the event of a delay or irregular water supply.
| Household | Daily need (@~135 L/person) | Suggested tank capacity |
|---|---|---|
| 2 people | ~270 L | 500 L |
| 4 people | ~540 L | 1,000 L |
| 6 people | ~810 L | 1,000-1,500 L |
| 8+ people | ~1,080 L+ | 2,000 L (or sump + overhead) |
For homes with both storage systems, split the capacity between:
- Underground sump: Stores the bulk municipal, borewell, or tanker supply.
- Overhead tank: Stores enough water for daily use and gravity-fed pressure.
Water Tank Price in India (₹ by Capacity)
The price of a water tank in India ranges from ₹ 2,000 to ₹ 65,000+ depending on its capacity, brand, layers, and features. The water tank 1000 ltr price starts from ₹ 5000. Whereas the water tank 500 ltr price starts from ₹ 2200.
These are the general water tank prices by capacity:
| Capacity | Typical type | Indicative price (₹) |
|---|---|---|
| 500 L | Triple-layer overhead | ₹2,200 - ₹5,300 |
| 1,000 L | Triple-layer overhead | ₹5,000 - ₹11,500 |
| 1,500 L | Triple/four-layer | ₹8,500 - ₹14,000 |
| 2,000 L | Four-layer / antimicrobial | ₹11,000 - ₹20,000 |
| 5,000 L+ | Large/underground sump | ₹35,000 - ₹65,000+ |
The final price of the water tanks primarily depends on the following:
- Capacity: The larger the tank, the more expensive it is.
- Layers: The triple-layer and four-layer tanks are more expensive than basic tanks.
- Brand: When the brand is established, like Sintex, there could be a higher price.
- Certification: Models that are ISI-marked are likely to be more expensive than models that are not certified.
Prices are indicative as of 2026. Rates vary by brand, layers, seller, and city, so check current local prices before buying.
Water Tank Placement as per Vastu
As per Vastu Shastras, install one water tank below the ground in the north-east direction and one water tank above the ground in the west or south-west direction.
Don't think of a heavy overhead tank in the north-east or in the centre of the house. If you want to know how to plan the north and north-east of your house, read our North Direction Vastu guide in detail.
The following are basic placement rules:
Underground Water Tank or Sump
It is the tradition that the north-east (Ishanya) is the best direction for an underground water tank, sump, or borewell. Vastu believes this is related to water and positive energy. Do not store underground water in the south-east or south-west. The house should also have a Brahmasthan (the central part) which is free from any large water-holding structure.
Overhead Water Tank
Usually, an overhead water tank will be installed in the south-west or toward the west as per Vastu. These directions are used for heavy products and are deemed applicable. Don't install a heavy overhead tank in the north-east or in the middle of the house. Read our Septic Tank as per Vastu guide to get to know about the ideal direction and placement rules.
Installation and Maintenance Tips
Install the water tank on a strong, level platform with proper inlet, outlet, overflow, and drainage connections. Clean and disinfect the tank every 6 months, and check for cracks and leaks. These are some of the tips you should remember when installing and maintaining:
- Support the overhead tank on a level platform: Support the entire base of the overhead tank evenly. Avoid placing the tank on an unsupported slab edge.
- Secure and fit a tight lid: Mosquitoes, dust, and other contamination are reduced by using a secure and tight lid.
- Install appropriate pipe connections: Ensure separate inlet, outlet, overflow, and wash-out connections for easy use and clean-up.
- Select UV-stable layers: A multi-layered, UV-stable tank will resist high-intensity sunlight more effectively and will minimize surface chalking and cracking.
Read our Plumbing Basics for Indian Homes guide to understand home plumbing layouts, pipe types, and common water-supply issues.
Next Steps: Choosing Your Water Tank
Choose a water tank by checking the material, number of layers, capacity, price, and placement. For most Indian homes, a layered ISI-marked tank sized to daily water needs offers a practical choice. For your home, shop water tanks on HomeRun and get 60-minute delivery in serviceable locations.
Frequently Asked Questions
What size water tank do you need for your home?
Most Indian homes can estimate 135 litres of water per person per day. A family of four needs about 540 litres daily, so a 1,000-litre water tank gives a practical buffer.
How much does a 1000 litre water tank cost in India?
A 1,000-litre water tank typically costs ₹ 5,000- ₹ 11,500 in India. The cost depends on the brand, number of layers, UV protection, antimicrobial protection, and warranty.
Which water tank is best: Sintex or other brands?
The most popular is the Sintex water tank. But multiple-layer water tanks are available in Ashirvad, Supreme, Astral, and Plasto water tank are good options too.
What is the difference between single-layer and triple-layer tanks?
A single-layer water tank features just one layer of plastic, while a triple-layer tank includes three layers to provide more effective light blocking, UV protection, and durability.
How often should a water tank be cleaned?
Household water tanks should be cleaned and disinfected every six months.