Plastic water storage tanks are great in urban and rural communities especially in places with little or unreliable access to water.

So why buy a plastic water storage tank?

Here are the key advantages to keep in mind when choosing to buy a plastic water storage tank.:

Plastic water tanks help store water when it’s available, making sure there’s a steady supply during shortages.

In cities with unpredictable rainfall, these tanks are used to collect and store rainwater, which reduces the need to rely on city water systems.

Plastic water storage tanks are also affordable, especially when compared to metal or concrete tanks, making them a good option for homes and businesses in cities.

They are lightweight and easy to install, which is especially helpful in urban areas where space is limited.

In addition, they’re made from durable, UV-resistant materials that don’t corrode and require little maintenance, making them ideal for city use.

These tanks come in different shapes and sizes, so they can fit in small spaces like rooftops or basements, which is perfect for urban homes with little room.

By storing water, plastic tanks also help conserve water and reduce the need for municipal water, encouraging more sustainable practices.

They also provide a backup water source during emergencies, such as natural disasters or disruptions to the main water supply, which is important in urban areas.

Overall, plastic water storage tanks offer a practical, reliable, and affordable solution to water storage challenges in cities.

Water Tank Materials and Manufacturing

Polyethylene (PE)

Polyethylene is a strong, durable, and affordable material widely used to make water tanks. When treated with UV stabilizers, it can last over 10 years without breaking down in sunlight.

PE is also resistant to temperature changes, impacts, and chemicals, making it a safe choice for storing drinking water.

These tanks are lighter than those made from other materials, come in various sizes and shapes, and some are approved for drinking water storage.

A special lining is added inside the tank after the outer shell cools, which hardens to make the interior safe for water.

How Water Tanks Are Made

Plastic water tanks are usually made using one of two methods: injection molding or rotational molding.

Injection Molding

This method is great for making smaller tanks. Melted plastic is injected into steel molds shaped like the desired tank.

Once the plastic cools, the tank is removed. This process is fast, efficient, and precise—like using a Jell-O mold.

Rotational Molding

This method works best for larger, single-piece tanks. It uses centrifugal force to spread melted plastic evenly inside the mold, creating tanks with consistent wall thickness.

Polyethylene powder is heated and melted inside the mold, making tanks quickly, efficiently, and at a low cost.

Choosing the Right Material

The best plastic depends on what the tank will store. Key considerations are chemical resistance, strength, and cost. Two common options are:

Polyethylene

The most popular plastic in the world, polyethylene comes in three types: low-density, high-density, and ultra-high molecular weight.

It’s strong, handles impacts well, and resists cracking, making it ideal for water tanks.

Polypropylene

Called the “steel” of plastics, polypropylene is heat-resistant (up to 200°F), strong, and chemically durable. It’s stable, affordable, and widely available, making it a reliable choice for many applications.

Why Plastic Tanks Are in Demand

Plastic water tanks are becoming more popular worldwide because they are efficient, affordable, and adaptable to various needs.

Some regions are driving this demand more than others as the need for reliable water storage grows.

India:

India has a variety of climates across its different regions. When choosing a water tank, it’s important to select one that is durable and can withstand extreme weather conditions.

Other factors to consider include the tank’s material, shape, and colour.

Major Manufacturers: Sintex Industries, Supreme Industries, R C Plasto, and Astral Pipes are top companies making plastic water storage tanks in India.

Plasto

R C Plasto Tanks & Pipes Pvt. Ltd. is a leading water storage tank manufacturer in India with over 40 years of trust. Known for high-quality overhead water tanks.

Plasto uses advanced technology to meet customer expectations.

With over 5,000 dealers across 25+ states, Plasto is one of the top water tank brands.

Their tanks are durable, safe for drinking water, available in multiple layers, and come with a 10-year guarantee.

Supreme Industries

As the largest plastic processors in the country, Supreme Industries manage over 640,000 metric tonnes of polymers each year and offer a wide range of plastic products across India.

Their goal is to be the most value-driven solution provider across all their plastic product businesses.

They focus on improving customers’ daily lives while fostering respect and empowerment for all stakeholders.

Explore their range of durable, high-quality plastic water tanks, including both overhead and underground options.

The collection features Siltank, Weathershield, Amrutan, Ecosil, and Copperfield water tanks.

Sintex

Sintex, previously known as The Bharat Vijay Mills Ltd and Sintex Industries Ltd, is the world’s largest producer of plastic water tanks.

In its quest for excellence, Sintex has always valued the support of their people—their most important asset.

Astral Pipes

Born in Gujarat, India, and recognized worldwide, Astral Pipes is a leader in innovation and trendsetting in the piping industry.

Focused on introducing advanced piping technologies and continuously improving both existing and new products, Astral consistently raises industry standards and leads by example.

Known for its unwavering quality and exceeding customer expectations, Astral prioritizes delivering value and maintaining a strong presence in customers’ minds.

From pioneering piping technologies to creative brand communication, Astral remains committed to its mission of reliability and innovation.

Their plastic water tank collection include Cleo, Vito, Sylo, Opta, Delta, Pio and Sarita.

Ashirvad Pipes

For more than 25 years, Ashirvad Pipes has set the gold standard in products, processes, and expertise within the plumbing industry.

They take pride in offering world-class global products and services directly to your doorstep, driven by continuous innovation and a commitment to staying ahead of the curve.

Africa:

Many African countries, especially those in arid or semi-arid regions, face significant water challenges.

Plastic water storage tanks provide a reliable solution for storing rainwater and other water sources, both in urban and rural areas. 

Interestingly the urban areas also rely heavily on plastic water tanks due to the unreliability of the water suppliers.

Major Manufacturers and Suppliers: Sintex (mentioned above) Polytank, RotoMould SA and Geepee are some of the prominent manufacturers and suppliers of plastic water storage tanks in Africa.

Rototanks

RotoTank™ is South Africa’s leading supplier and manufacturer of high-quality polyethylene tanks.

With over 30 years of experience, RotoTank™ has established a strong presence nationwide, with 16 branches strategically located to serve customers’ diverse needs.

Their wide range of products includes water tanks, chemical tanks, transport tanks, septic tanks, and storage silos, all designed for superior durability and reliability.

Geepee

Their motto is Built-in Nigeria. For Africa. Plastic Tanks, Tested and Trusted by millions.

For more than 40 years, GEEPEE tanks has been the top choice for households seeking reliable plastic tanks. They design their products to not only meet and exceed customer expectations but also to outperform other options in the market.

Their tanks come in a wide range of capacities, from 50 liters to 30,000 liters, with custom sizes available to suit specific requirements. Geepee Water Tanks are lightweight and easy to handle, reducing the overall load on structures. Compared to metal or concrete tanks, Geepee tanks are much easier to install.

Polytank

Polytank is Africa’s leading plastic manufacturer, known for producing high-quality water storage tanks.

The brand is so well-known in Ghana that the name “Polytank” has become synonymous with “water storage tank,” much like how “Jeep” is commonly used to refer to all 4×4 vehicles.

Whether you need a water storage container for your home, office, business, or project site, Polytank has you covered.

Their tanks come in various sizes, shapes, and colours to suit your needs.

Australia:

Australia has a dry climate and often faces droughts, so it depends a lot on collecting and storing rainwater. Households and farms commonly use plastic water tanks to save water during dry times.

Major Manufacturers and Suppliers: Polymaster, Slipform, and Tropic Water Tanks are some of the leading manufacturers and suppliers of plastic water storage tanks in Australia.

Polymaster

As Australia’s top manufacturer of high-quality water tanks and storage solutions, Polymaster offer a wide range of rainwater tanks from 200 to 50,000 litres to suit various industries.

Polymaster provides a wide selection of water tanks, including large rainwater tanks and underground tanks, available in various sizes.

All tanks are made from high-quality, food-grade polyethylene.

North America

In the United States while less common in urban areas with reliable water supply, plastic water storage tanks are popular in rural areas and regions prone to drought.

These tanks are used for various purposes, including emergency water storage, livestock watering, and irrigation. 

Here are some of the top manufacturers of plastic water tanks in North America, known for their quality and reliability:

Norwesco

Norwesco are a leading manufacturer of rotationally moulded polyethylene tanks in North America.

Their water tanks are manufactured using resins that meet FDA specifications to ensure safe storage of potable water.

The black or dark green colour limits light penetration which reduces the growth of water-borne algae.

Snyder Industries

Snyder Industries is known for its durable water tanks, chemical storage solutions, and industrial-grade tanks. They offer customizable options to meet a variety of needs.

Bushman USA

In 2019, Tank Holding Company, the largest polyethylene tank and container manufacturer in North America, acquired Poly-Mart and rebranded it as Bushman USA.

Bushman USA is a company dedicated to water conservation through rainwater harvesting and storage solutions.

Since 2005, it has been providing services for residential, commercial, and government projects.

Bushman manufactures tanks in a range of sizes, including slimline and large-capacity models.

In conclusion, plastic water storage tanks are essential, and it’s great to see a wide range of options available.