Top Choice: Best Water Tank Materials in India

Confused about which water tank material to choose? Read our in-depth comparison of plastic (LLDPE), steel, cement, and fiberglass tanks, and find out why LLDPE plastic stands out with its durability, cost-effectiveness, and versatility for efficient water storage.


Oswal Hi Tech Pvt Ltd

6/30/20233 min read

The Best Water Tank Material Revealed: Plastic (LLDPE) vs. Steel vs. Cement vs. Fiberglass

Plastic VS Steel Water Tank
Plastic VS Steel Water Tank


Choosing the right water tank material is crucial for ensuring efficient and reliable water storage. In this comprehensive comparison, we will delve deep into the merits and demerits of the most commonly used water tank materials: plastic (LLDPE), steel, cement, and fiberglass. By examining their durability, cost-effectiveness, maintenance requirements, and overall suitability, we will demonstrate why plastic (LLDPE) tanks stand out as the best choice for water storage applications.

  1. Plastic (LLDPE) Tanks:

  • Merits:

    • Superior durability: LLDPE plastic tanks are highly resistant to impact, weathering, and UV radiation. They can withstand extreme temperatures and environmental conditions without compromising structural integrity.

    • Chemical inertness: LLDPE tanks are chemically inert, ensuring the safety and purity of stored water. They do not react with the water or leach harmful substances, making them ideal for potable water storage.

    • Lightweight and easy installation: LLDPE tanks are lightweight, making transportation and installation hassle-free. They require minimal equipment and labor, reducing overall costs.

    • Versatile design options: LLDPE tanks offer customization options to fit various storage needs. They come in different shapes, sizes, and capacities, allowing for flexibility in installation.

    • Cost-effectiveness: Plastic tanks are generally more affordable compared to other materials. Their lower initial cost, combined with minimal maintenance requirements, makes them a cost-effective long-term investment.

  • Demerits:

    • Susceptible to physical damage: While LLDPE tanks are durable, they can be scratched or dented if mishandled or subjected to heavy impact.

  1. Steel Tanks:

  • Merits:

    • High strength and durability: Steel tanks are known for their strength and longevity. They can withstand high-pressure environments and resist external damage.

    • Fire and heat resistance: Steel tanks are fire-resistant, making them suitable for high-risk areas.

    • Versatility in installation: Steel tanks can be installed above ground or underground, providing flexibility in placement.

  • Demerits:

    • Corrosion risk: Without proper coating and maintenance, steel tanks are prone to corrosion, especially in environments with high humidity or chemical exposure.

    • Heavyweight and installation challenges: Steel tanks are significantly heavier than plastic tanks, requiring heavy equipment and skilled labor for installation. This increases the overall cost.

    • Higher initial cost: Steel tanks generally have a higher upfront cost compared to plastic tanks.

  1. Cement Tanks:

  • Merits:

    • Strength and durability: Cement tanks are known for their structural integrity and longevity. They can withstand external pressures and resist damage.

    • Thermal insulation: Cement tanks provide excellent thermal mass, helping to maintain water temperature over extended periods.

    • Underground suitability: Cement tanks are commonly used for underground installations, providing space-saving options.

  • Demerits:

    • Cracking and leakage risks: Over time, cement tanks may develop cracks, leading to leakage and potential water contamination.

    • Complex installation: Building cement tanks requires professional expertise and specialized construction techniques, increasing installation costs.

    • Heavyweight: Cement tanks are heavy and require careful planning and equipment for transportation and installation.

  1. Fiberglass Tanks:

  • Merits:

    • Lightweight and durable: Fiberglass tanks offer a balance between strength and weight. They are relatively lightweight while maintaining durability.

    • Corrosion and chemical resistance: Fiberglass tanks are highly resistant to corrosion, rust, and chemical damage.

    • Above-ground installation: Fiberglass tanks are commonly used for above-ground installations, providing ease of access and maintenance.

  • Demerits:

    • Higher cost: Fiberglass tanks generally have a higher upfront cost compared to plastic tanks.

    • Limited customization: Fiberglass tanks have limited design options and are less customizable compared to plastic tanks.

    • Susceptible to cracking: In extreme temperature fluctuations or if subjected to impact, fiberglass tanks may develop cracks or delamination.


After a thorough comparison, it is evident that plastic (LLDPE) tanks offer numerous advantages over other materials for water storage applications. Their superior durability, chemical inertness, lightweight nature, versatility, and cost-effectiveness make them an ideal choice. While steel, cement, and fiberglass tanks have their own merits, plastic (LLDPE) tanks excel in terms of overall performance, ease of installation, and long-term cost savings. When selecting a water tank, prioritize the outstanding qualities of plastic (LLDPE) tanks for reliable, efficient, and cost-effective water storage.