Water Tanks
When it comes to storing clean, safe water for your home or business, the tank you choose makes all the difference. Astral water tanks are built with advanced multi-layer technology, NSF-certified quality, and India’s first anti-viral copper shield — giving you round-the-clock protection against bacteria, viruses, fungi, and algae.
Available from 500 litres to 10,000 litres, our range of plastic water tanks covers every need — from a compact loft tank for a 1BHK apartment to large overhead tanks for housing societies and commercial buildings. Every tank is made from 100% food-grade HDPE, UV stabilized, and built to handle the toughest Indian weather conditions.
Different Types of Water Storage Tanks
When selecting a water storage tank, it is important to understand the various types available in the market. Each type serves different purposes and comes with its own set of advantages. Here are some of the most common types:
1. Plastic Water Tanks
Plastic water storage tanks are the most widely used due to their durability and resistance to corrosion. These tanks are lightweight, easy to install and require minimal maintenance. Plastic water tanks are available in a range of sizes and are ideal for both residential and commercial purposes. They are also UV-resistant to ensure that the water stored remains clean and safe for consumption.
2. Metal Water Tanks
Made from materials like stainless steel or galvanized iron, metal water tanks are known for their strength and longevity. These water tanks can withstand high pressure and are less likely to suffer from physical damage. However, they can be prone to rust and corrosion over time if not maintained properly.
3. Concrete Water Tanks
Concrete water tanks are highly durable and often used for large-scale water storage needs, such as in commercial buildings or industrial setups. They can be either above-ground or underground, providing installation flexibility. These tanks require a higher initial investment and are more challenging to install.
4. Underground Water Tanks
Ideal for those with limited space, underground water storage containers are buried beneath the ground to store water. These tanks are usually made of plastic or concrete and are ideal for large homes or buildings that require a significant water storage capacity without sacrificing valuable space.
Each type of water storage tank has its unique features and the choice depends on your storage needs, space availability and budget.
Types of Astral Water Tanks
Astral offers eight distinct water tank models — each engineered for a specific need, household size, or budget. Whether you’re looking for maximum hygiene protection, a lightweight blow-moulded option, or a compact loft tank, there’s an Astral water tank built for it.
1. Astral Cleo — 4-Layer Water Tank with Anti-Viral Copper Shield
The Cleo is Astral’s flagship overhead water tank and India’s first water tank with a copper-fortified inner layer. Its 4-layer construction gives you complete protection from the outside in — UV-stabilized outer layer, heat-blocking black layer, structural grey layer, and a sky-blue inner layer embedded with active copper particles that neutralize 99.9% of bacteria, viruses, fungi, and algae including SARS-CoV-2.
Available in: 500L | 750L | 1000L | 1500L | 2000L | 3000L | 5000L
Colors: White, Blue, Yellow, Green | Warranty: 15 years
Download Catalogue: Cleo Brochure PDF
2. Astral Vito — 3-Layer Water Tank with Anti-Viral Copper Shield
The Vito brings Astral’s signature anti-viral copper shield technology into a 3-layer format — making it an ideal choice for families who want premium hygiene protection at a more accessible price point. The sky-blue inner layer with active copper particles keeps water free from harmful microbes all day, every day.
Available in: 500L | 750L | 1000L | 1500L | 2000L | 3000L | 5000L
Colors: White, Blue, Yellow, Green | Warranty: 15 years
Download Catalogue: Vito Brochure PDF
3. Astral Sylo — 2-Layer Roto-Moulded Water Tank
The Sylo is a no-fuss, reliable 2-layer roto-moulded plastic water tank built for everyday use. A black UV-resistant outer layer blocks sunlight and prevents microbial growth, while a white food-grade inner layer keeps water safe and easy to inspect. Structural ribs run across the body to prevent bulging under pressure. Great value, solid performance.
Available in: 500L | 750L | 1000L | 1500L | 2000L | 3000L | 5000L
Warranty: 15 years
Download Catalogue: Sylo Brochure PDF
4. Astral Opta — 3-Layer Blow-Moulded Water Tank
The Opta is a lightweight, blow-moulded overhead water tank made from 100% virgin HDPE. Its 3-layer design — UV-resistant white outer, black UV-blocking middle, and anti-microbial white inner — keeps water clean and safe. A modern ribbed design gives it extra strength, and uniform wall thickness means consistent durability throughout. Comes with a threaded lid and air vent.
Available in: 500L | 750L | 1000L | 1500L | 2000L
Colors: White, Blue, Yellow, Green | Warranty: 15 years
Download Catalogue: Opta Brochure PDF
5. Astral Delta — 3-Layer Water Tank with Anti-Microbial Technology
The Delta is a 3-layer roto-moulded plastic water tank built for homes and commercial use that need reliable, hygienic water storage at scale. Its anti-microbial inner layer prevents bacteria and microbial buildup, while the black middle layer blocks sunlight and reduces algae growth. Available in capacities up to 10,000 litres — making it one of Astral’s largest range options.
Available in: 500L | 750L | 1000L | 1500L | 2000L | 3000L | 5000L | 7500L | 10000L
Colors: White, Blue, Yellow, Green | Warranty: 10 years
Download Catalogue: Delta & Pio Brochure PDF
6. Astral Pio — 2-Layer Water Tank with Anti-Microbial Technology
The Pio offers dependable 2-layer water storage with an anti-microbial inner layer — at a budget-friendly price point. Built from 100% virgin HDPE, it’s a practical overhead water tank for homes, small businesses, and agricultural use. Available in the same wide capacity range as the Delta, giving you value without compromise.
Available in: 500L | 750L | 1000L | 1500L | 2000L | 3000L | 5000L | 7500L | 10000L
Colors: White, Black | Warranty: 10 years
Download Catalogue: Delta & Pio Brochure PDF
7. Astral Elo — 4-Layer Roto-Moulded Water Tank
The Elo is a premium 4-layer roto-moulded water storage tank designed for households and businesses that demand the best structural protection. Layer by layer: UV-resistant outer, black sunlight-blocking layer, grey temperature-controlling layer, and a sky-blue anti-microbial inner layer. A threaded lid with air ventilation keeps water fresh and odor-free. Available in Astral’s widest capacity range.
Available in: 500L | 750L | 1000L | 1500L | 2000L | 3000L | 5000L | 7500L | 10000L
Colors: White, Blue, Yellow, Green
Download Catalogue: Elo Brochure PDF
8. Astral Sarita — Blow & Roto-Moulded Vertical and Loft Tanks
The Sarita range covers a unique segment — vertical tanks and loft tanks for homes where space is at a premium. Available in both blow-moulded and roto-moulded variants, Sarita tanks are built from 100% virgin HDPE and UV-stabilized material. The loft tank design fits compactly in overhead spaces, while the larger vertical tanks are perfect for ground-level or rooftop installation.
Available in: 200L | 300L | 500L | 750L | 1000L | 1500L | 2000L | 5000L (blow-moulded); 300L–10000L (roto-moulded loft)
Colors: Black, White, Blue, Yellow
Download Catalogue: Sarita Brochure PDF
How to Maintain Your Home Water Tank?
Proper maintenance of your home water tank is essential to ensure clean, safe and reliable water storage. Regular upkeep helps prolong the life of the tank, reduces the risk of contamination and ensures that water remains potable. Here are some key steps for maintaining your water storage tank:
1. Clean the Tank Regularly
One of the most important aspects of water tank maintenance is cleaning. Over time, sediments, algae and other impurities can accumulate in your plastic water tank. Cleaning should be done every 6 to 12 months, depending on the water quality and usage. To clean the water tank:
- Empty the tank
- Scrub the walls and floor using a brush or cloth to remove dirt and algae.
- Use a mild detergent and rinse thoroughly to avoid any residue.
- Disinfect the tank using chlorine or a water-safe cleaning solution and let it sit for a while before rinsing it out.
2. Check for Cracks or Leaks
Inspect the tank periodically for cracks, leaks or any signs of damage. Plastic water storage tanks can be prone to cracking over time, especially when exposed to harsh weather conditions. If any leaks are detected, they should be sealed immediately to prevent water wastage and contamination.
3. Ensure Proper Ventilation
Proper ventilation is important for maintaining a water storage tank. Ensure that the tank has an appropriate vent or lid to prevent the growth of algae and bacteria, which thrive in dark, stagnant water. The vent also allows for air circulation, which prevents the formation of foul smells.
4. Cover the Tank
To protect your water storage containers from dirt, debris and contaminants, make sure the tank is properly covered. Use a tightly fitting lid or cover to keep the water clean and prevent animals from getting into the tank. A covered tank will also minimise algae growth caused by sunlight.
5. Inspect the Inlet and Outlet Pipes
Regularly check the inlet and outlet pipes connected to your water storage container for blockages or damage. Clean the pipes to ensure that water flows freely and without obstruction. Clogged pipes can lead to poor water pressure or contamination.
6. Test Water Quality
It is important to test the quality of the water stored in the tank, especially if the tank stores potable water. If the water appears murky or has an unusual taste, it is a sign that the water tank for house, needs cleaning, or the water source needs to be inspected. Regular testing for pH levels, chlorine content and bacteria can help you ensure water safety.
7. Monitor Water Levels in Tank and Water Usage
Keep an eye on the water levels in the tank. A sudden drop in levels or an unusual fluctuation may indicate a leak or fault. Monitoring water usage ensures that the water tank is functioning optimally.
By following these simple steps, you can maintain your plastic water storage tanks effectively to ensure safe and reliable water access for your home throughout the year.
Shop Water Tanks by Capacity
Not sure which size water tank you need? The right capacity depends on your household size, daily water usage, and how reliably your water supply runs. As a general rule, each person uses between 150–225 litres of water per day for drinking, cooking, bathing, and cleaning.
Use the table below to find the right overhead water tank size for your home:
| Capacity | Family Size | Daily Water Need | Ideal Use |
| 500 L Tank | 2–3 members | ~450 L/day | Compact homes, 1BHK |
| 750 L Tank | 3–4 members | ~675 L/day | 2BHK apartments |
| 1000 L Tank | 4–5 members | ~900 L/day | Standard homes — most popular |
| 1500 L Tank | 5–6 members | ~1,125 L/day | Large 3BHK homes |
| 2000 L Tank | 6–8 members | ~1,350 L/day | Bungalows, duplex homes |
| 3000 L Tank | 8–10 members | ~1,800 L/day | Row houses, villas |
| 5000 L Tank | Apartments / Small commercial | 2,000+ L/day | Housing societies, offices |
For apartment buildings, gated communities, or commercial properties with multiple floors, we recommend the 5,000-litre or 10,000-litre range. Our Cleo 4-Layer and Elo tanks are purpose-built for high-demand installations where water quality and structural strength both matter.
How to Install an Overhead Water Tank?
Installing an overhead water tank for your house requires careful planning and thoughtful execution. When selecting a water storage tank, consider the specific needs of your household and the available space. Before purchasing, evaluate the capacity you will need for effective water storage and ensure the tank meets local regulations for potable water tanks. Here are the steps to install an overhead water tank:
Step 1: Select an Appropriate Location
- Choose a flat, stable area with sufficient space for the tank.
- Ensure the location allows easy access for maintenance and refilling.
- Consider proximity to downpipes (for rainwater harvesting) and plumbing connections.
Step 2: Prepare the Base
The base should be level and strong to support the full weight of the water storage tank when filled. Recommended base types include:
- Concrete Slab (RCC Base): At least 4–6 inches thick, extending 6 inches beyond the tank’s diameter.
- Paver Blocks: Well-compacted, even surface to distribute weight.
- Gravel or Sand Bed: Only for smaller tanks; ensure it’s well-compacted.
Step 3: Position the Tank
- Carefully lift the tank into place using appropriate equipment (if necessary).
- Do not drag or roll the plastic water tank, as it may damage the structure.
- Ensure the tank sits evenly on the base with no overhanging edges.
Step 4: Connect Inlet and Outlet Pipes
- Inlet Connection: Attach pipes leading from gutters (for rainwater collection) or direct water sources.
- Outlet Connection: Install taps or plumbing lines to access stored water.
- Overflow Pipe: Position to direct excess water storage safely away from the tank’s foundation.
- Use Teflon tape or sealant to prevent leaks at connection points.
Step 5: Install a Secure Lid and Vent
- Ensure the lid is tightly sealed to prevent debris, insects, and contamination.
- A ventilation system (mesh-covered opening) helps maintain air circulation and prevents a vacuum effect.
Step 6: Conduct a Leak Test
- Fill the water storage container gradually and inspect for leaks or structural weaknesses.
- Tighten any loose fittings and ensure water flows properly through outlets.
Step 7: Maintain Your Water Tank Regularly
- Clean the water storage tank periodically to prevent algae and sediment buildup.
- Inspect pipes and fittings for leaks or damage.
- Check water quality if using the water tank for drinking purposes; consider installing a filtration system.
By following these steps, you can ensure that your water tank provides reliable water storage for years to come
Why Choose Astral Water Tanks?
There are a lot of water tanks on the market. Here’s why Astral is the choice that holds up — not just when you buy it, but for the next 10 years.
1. Anti-Viral Copper Shield
The inner layer has active copper particles embedded into the polymer. This kills bacteria, viruses, fungi, and algae — including SARS-CoV-2 — around the clock without any extra effort from you. No other brand in India offers this at this scale.
2. NSF Certified
Astral’s piping systems hold NSF certification — the international gold standard for water safety. The same commitment to quality extends across every water tank in the range.
3. Food-Grade HDPE
Every Astral water tank is made from 100% virgin, food-grade High-Density Polyethylene (HDPE). It’s non-toxic, BPA-free, and safe for storing drinking water for your entire family.
4. UV Stabilized — Built for Indian Summers
The outer layer is engineered to resist harsh UV rays, high heat, and extreme weather. It prevents the polymer chain from breaking down, keeps water cooler inside, and blocks sunlight from triggering algae growth.
5. Air Ventilation Technology
A threaded lid with a built-in air vent keeps water oxygenated and fresh. Proper air circulation prevents foul odors, stops deformations, and maintains water quality between refills.
6. Threaded Lid — Always Dust-Free
Every Astral tank comes with a secure threaded lid. Some models include a double lid — an outer threaded cover plus an inner lid that blocks sunlight and provides an extra layer of protection against contamination.
7. Anti-Microbial Inner Layer
Even on models without the copper shield, the inner layer is treated with anti-microbial technology. It actively prevents bacterial and microbial growth on the tank surface — so your water stays clean, always.
8. Built Strong — Ribbed Design
Structural ribs run across the tank body, significantly increasing strength and reducing the risk of bulging or bursting under pressure. Less deformation. Longer life.
9. 500L to 10,000L Range
From a compact 500-litre water tank for a small apartment to a 10,000-litre overhead tank for large commercial buildings — Astral covers the full spectrum. One trusted brand for every home, every need.
Every Astral water tank is manufactured at our ISO 9001, ISO 14001, and ISO 45001 certified facilities — ensuring the same consistent quality wherever you buy from in India.
