Sintex Eterno
Virus Protection50 Year Warranty
Safer Water Storage
for Everyday Living.
15 Million+
Tanks installed accross India
Helping families across India
store water safely and reliably*.
Safer Water
Storage for
Everyday Living.
Advanced water storage tank solutions engineered for purity, protection and performance. Designed to keep your home's water safe, hygienic, and healthier for everyday use.
15 Million+
Tanks installed accross India
Helping families across India
store water safely and reliably.
NEW LAUNCH
India's highest warranty
water tank — Sintex Eterno
comes with an unmatched
50-year warranty for reliability
that lasts generations.
When It Comes to Water Safety,
There's More to the Story Than Layers.
The best home water tanks don't add layers. They add protection, hygiene, durability and peace of mind for years to come.
That belief has kept Sintex ahead of other water tank manufacturers for five decades,
and it shapes every water storage tank we mould, from the loft unit to the underground sump.
Discover the features that make Sintex water storage containers a trusted choice for safer water storage.
UV Protection
UV water tank protection shields against harsh Indian sunlight,
so the material resists cracking, fading and heat damage.
Your tank holds up summer after summer.
Insulation
An insulated water tank keeps heat out and water cool
through the worst of the afternoon. Sintex Trupuf packs
50 mm of PUF into an insulated water storage tank that works
as a genuine heat resistant water tank. In colder weather,
an insulated water tank provides protection against freezing,
ensuring you continue to receive regular water flow
without issues with flow.
Insulation
An insulated water tank keeps heat out and water cool through the worst of the afternoon. Sintex Trupuf packs 50 mm of PUF into an insulated water storage tank that works as a genuine heat resistant water tank. In colder weather, an insulated water tank provides protection against freezing, ensuring you continue to receive regular water flow without issues with flow.
Find the Best
Fit for Your
Home
Find Your Perfect Water Tank
Choosing the right water tank doesn't have to be complicated. Answer a few simple questions about your home and water usage, and our tool will help you find the ideal water tank for safe, worry-free water storage.
Dealer Locator
Find your nearest authorized Sintex dealer for genuine products, expert guidance, and a seamless buying experience.
Explore Our Water Storage Range
Stay Connected
Stay in touch! Connect with us to share your feedback, resolve concerns and stay updated on the latest news and offers.
About Our Water Tanks
Every Sintex tank starts as raw LLDPE resin and comes out of rotomoulding as a single, seamless shell with no joints, no seams, nowhere for water to sit and stagnate. That process, refined over five decades, is why Sintex water storage tanks hold up on Indian rooftops through summers that crack lesser plastic. It's also why the brand's tanks turn up everywhere from single-family homes to industrial plants: the same mold quality scales from a 200 litre loft tank to a 20,000 litre factory installation.
Types of Water Tanks We Offer
Sintex covers the full spread. Loft tanks for compact flats, overhead tanks for houses and societies, underground sumps where terrace space runs out, plus heavy-duty models for farms and factories.
Choose an antimicrobial drinking water tank for the kitchen line, or an insulated water storage tank if your terrace takes the full afternoon sun. Looking for a PVC water tank? We don't manufacture PVC storage tanks. PVC works well for pipes and fittings, but it's not built for large-volume water storage. Our rotomoulded LLDPE holds up better against Indian heat and sun exposure, without cracking or warping over time.
Capacity Range
Sizes run from 200 litres to 20,000 litres. Water storage tanks for home use start around 500 litres. Large water storage tanks for societies and factories begin at 5,000 litres, and custom moulds cover any large water tank beyond that.
View Our Different Types of Water Tank
Why Sintex Leads the Water Tank Industry?
Sintex has molded tanks for over 50 years. 15 million are in service across India.Every rotomoulded tank conforms to IS 12701 for LLDPE, made from FDA-grade virgin polymer that meets ROHS limits. Warranty runs from 5 years on the ISI Double Layer to 50 years on Sintex Eterno, the longest coverage any water tank manufacturer offers here. Dealers stock the range in every state; call 1800-121-2764 for service. That record is why buyers call Sintex the best water tank brand in India. Shortlist your water tank choice, and enjoy the benefits of healthy, hygienic water storage in your home.
How Much Water Do You Actually Need to Store?
Tank size comes down to household size and daily use, not guesswork. Bigger families and irregular supply areas both need more buffer than the base calculation suggests. See our full sizing guide below for the formula and BIS usage benchmarks.
Then check where the tank goes. Water tanks for home use sit on the terrace when there is room, tuck into a loft when there isn't, and go underground when both run short. Material decides the rest. A drinking water tank for home should be food-grade virgin plastic with antimicrobial protection, while a garden or wash line runs fine on a plain double-layer build. A home water tank with insulation or a longer warranty costs more upfront and pays that back over 15 years. Compare tanks by capacity, layers and warranty, then browse by type.
Choose a Water Tank Based on Your Needs
Different jobs need different tanks. A house runs on one overhead tank, plus a loft unit feeding the bathroom water tank line upstairs. Apartments pool demand into bulk storage and pump it back up. Farms need volume that survives sun and cattle. Commercial sites care about uptime, industrial sites about chemical tolerance. Rainwater harvesting needs a buried tank that shrugs off roots. Colour matters less than people assume. A white water tank reflects heat and keeps the body cooler. Black cuts light inside and slows algae. Either way, a cold water tank stays cold because of insulation in the walls, not paint on them.
Type | Best For | Installation | Space | Capacity |
Water tanks for homes | 2 to 6 people, daily use | Terrace or loft | Low | 100 to 1,000 L |
Apartment water tanks | Shared supply across flats | Terrace tank plus underground sump | Medium | 500 to 20,000 L |
Farm water tanks | Irrigation, livestock, field storage | Ground-level platform | High | 2,000 to 10,000 L |
Commercial water tanks | Hotels, offices, schools, clinics | Terrace or sump | Medium | 5,000 to 10,000 L |
Industrial water tanks | Process water, chemical storage | Ground or bunded slab | High | 10,000 to 20,000 L |
Rainwater harvesting tanks | Roof runoff, groundwater recharge | Underground | None above ground | 2,000 to 10,000 L |
Answers to commonly asked questions
Check three things. The ISI mark against IS 12701, which covers rotomoulded LLDPE. Confirmation that the material is virgin food-grade, not recycled. And the warranty card, because a brand that expects returns writes a short one.
Around 1,000 litres. Indian households use roughly 135 to 150 litres per person each day across drinking, cooking, bathing and flushing, so four people need close to 600 litres of live storage plus buffer for supply cuts. Go to 1,500 litres if you water a garden daily.
Sintex Eterno carries a 50-year warranty, the highest on any water tank in India. Longevity comes from UV stabilisation and virgin polymer that refuses to go brittle in the sun. An ordinary plastic tank in Indian conditions lasts 10 to 15 years. Eterno targets generations, not seasons.
Food-grade virgin plastic is safe. It resists leaching, carries no BPA or phthalates, and meets FDA material norms. Recycled plastic is the real risk, because nobody knows what sat in it before. Look for the ISI mark and a virgin-material claim on the tank body before you buy.
Sintex water tanks are engineered for long-term, reliable water storage, backed by warranties that reflect that durability. The flagship Sintex Eterno leads the range with an industry-first 50-year warranty. And other Tanks like Sintex Smart offers an 8-year warranty, while Sintex Pure and Pure+ are built with 100% food-grade virgin plastic and virus protection for safe, hygienic storage over time. Across the range, features like UV-stabilized protection and anti-microbial technology help each tank perform reliably for years of everyday use.
Rotomoulded plastic wins on weight, cost and hygiene. One-piece moulding leaves no joints to leak, no rust and no metallic taste. Concrete cracks over time, steel corrodes, and both cost more to install. A plastic tank arrives finished, goes up on the terrace, and gets on with it.
Use the dealer locator on this site. Enter your pin code and it lists authorised Sintex dealers near you with stock and contact numbers. You can also call the toll-free line on 1800-121-2764, or order from the online store and have the tank delivered.
Standard sizes cover 200 to 20,000 litres in black, white, blue, green and yellow. For housing projects, factories and awkward spaces, Sintex moulds to spec, including horizontal and rectangular shapes and underground sumps. Talk to a dealer or the business buyer desk about volumes and lead times.
Sintex tanks use LLDPE, rotomoulded into a single piece that flexes with temperature and takes UV without cracking. PVC turns up mostly in pipes and fittings, where rigidity helps. For storage, LLDPE handles the sun and the knocks better, which is why the tank range is built from it.
Rotomoulded tanks conform to IS 12701 and carry the ISI mark. SMC panel tanks follow IS 14399, Parts I and II. The material is FDA-grade virgin polymer, phthalate-free, and the range meets ROHS limits. Check the mark moulded on the tank body, not just the brochure.
They solve different problems. Black blocks light, so algae struggle to grow inside, which suits tanks sitting in open sun. White reflects heat, so the body stays cooler and looks cleaner on a terrace. With UV-stabilised virgin plastic underneath, either colour keeps the water safe.