


Water Tank
Lid
Garden Pipe
Sanitary-ware
At DUNA Plast, we are redefining water storage with cutting-edge, health-safe, and durable solutions. A brand by J.S. POLYMERS, we’ve been delivering trust and quality since 1998 from our base in Purnea, Bihar. With ISO 9001:2015 certification and a nationwide presence through 500+ dealers, our multi-layered water tanks, eco-friendly bases, and accessories serve homes, industries, and agriculture alike. Crafted using 100% virgin plastic, Microban® antimicrobial protection, and RoHS-certified materials, our tanks ensure safe, long-lasting performance. From 3-layer to 8-layer innovations, DUNA Plast stands as a symbol of modern technology, customer trust, and unmatched quality in water storage solutions.
Durable, hygienic, and long-lasting tanks for everyday water storage.
Enhanced strength and insulation with dual-layer protection technology.
Available in multiple capacities from 200L to 5000L.
Choose from color, shape, layers, and advanced protection features.
At DUNA Plast, we are redefining water storage with cutting-edge, health-safe, and durable solutions. A brand by J.S. POLYMERS, we’ve been delivering trust and quality since 1998 from our base in Purnea, Bihar. With ISO 9001:2015 certification and a nationwide presence through 500+ dealers, our multi-layered water tanks, eco-friendly bases, and accessories serve homes, industries, and agriculture alike. Crafted using 100% virgin plastic, Microban® antimicrobial protection, and RoHS-certified materials, our tanks ensure safe, long-lasting performance. From 3-layer to 8-layer innovations, DUNA Plast stands as a symbol of modern technology, customer trust, and unmatched quality in water storage solutions.
Durable, hygienic, and long-lasting tanks for everyday water storage.
Enhanced strength and insulation with multi-layer protection technology.
Available in multiple capacities from 200L to 5000L.
Choose from color, layers, and advanced protection features.
For over 25 years, we at DUNA Plast, have defined the gold standard in product, processes, and expertise across the plumbing industry. We pride ourselves on our ability to provide world-class access to global products and services right to your doorstep through relentless innovation and a commitment to stay ahead of the curve.




Give your outdoor space the ideal rooftop water tank by choosing any of the incredible options listed below.
Connect with Dunaplast today for durable, hygienic, and innovative water tank solutions. With over 25 years of expertise, we deliver world-class storage options in multiple sizes and layers, ensuring strength, safety, and reliability for every household and business.
I’ve been using Dunaplast water tanks for years. The quality, durability, and hygiene are unmatched. Truly reliable and long-lasting, perfect for my family’s daily water storage needs.
Dunaplast takes pride in delivering durable water storage solutions across residential, commercial, and industrial projects, setting benchmarks in quality, innovation, and customer satisfaction nationwide.
Duna Plast stands for trust, durability, and innovation. To our customers, it means reliable water storage, lasting quality, and a commitment to delivering world-class solutions every day.
Dunaplast stands for reliability and a bright future—a company that’s always looking ahead and flexible.
The vibe here is one-of-a-kind; it’s centered around teamwork, creativity, and a dedication to continuous improvement.
I'm encouraged to give my best here, surrounded by colleagues who genuinely want to see me thrive.
Collaboration is fundamental to everything we do at Dunaplast. We cheer for each other's successes and learn from our failures.
The leadership here motivates us daily with their vision and dedication to integrity.
Dunaplast represents trust and accountability for me—the organization is dedicated to enhancing our skills and supporting our development.
I’m proud to be part of a company that truly cares about sustainability and making a positive difference in the world.
I feel like my opinions at Dunaplast are acknowledged and appreciated. It truly seems like I'm making a difference in the company's growth.
Dunaplast has opened up opportunities I never thought I could have, from pioneering new technologies to managing significant projects.
For me, Dunaplast feels like a family—supportive, determined, and always aiming for improvement.
All our tanks are made from 100% virgin plastic and food-grade material, ensuring hygiene and durability.
Yes, our tanks are RoHS certified, Microban® protected, and made from food-grade plastic, making them completely safe for drinking water.
Roto Mould tanks offer thicker, even walls and are ideal for large volumes, while Blow Mould tanks are lightweight and impact-resistant, suited for smaller capacities.
We offer tanks in 3 to 8 layers, including advanced triple foam models with insulation, anti-microbial layers, and UV protection.
📍 J.S. Polymers, Ramraj Chowk, Gulabbagh – 854326, Purnea
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