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BWT-500-MG

500 litre Plastic Water Tank

Colour
Mist Green
Heritage Green
Black
Beige
Light Grey
Dark Grey
Slate Grey

500 litre Plastic Water Tank

Introducing the compact yet mighty 500 Litre Water Tank, the perfect solution for Kiwis who need efficient, reliable water storage without taking up a large footprint. Ideal for urban gardens, smallholdings, baches, and emergency water reserve, this plastic water tank is engineered for durability and performance. Whether you're collecting precious rainwater for your plants or securing a backup supply for your home, our 500L tank delivers exceptional value and quality. Its sleek, space-saving design is crafted from food-grade, UV-stabilized materials, ensuring your water stays fresh and clean for years to come. Make a smart, sustainable choice for your water needs today.

Key Features & Benefits

Our 500L Plastic Water Tank isn't just a container; it's a smart investment in water security. Designed and Manufactured in New Zealand with the New Zealand climate and user in mind, it boasts a range of features that set it apart.

  • Premium Food-Grade Material: Manufactured from high-quality, linear polyethylene, this tank is completely safe for storing water intended for human consumption, gardening, and animal use. Enjoy complete peace of mind.
  • Superior UV Protection: The tank is compounded with advanced UV inhibitors, shielding it from the harsh New Zealand sun. This prevents cracking, fading, and degradation, guaranteeing a long service life.
  • Space-Saving Vertical Design: With a compact footprint, this tank fits perfectly into tight spaces or beside the garage, against a house wall, or in a small garden corner, maximizing your water storage without dominating your section.
  • Robust & Corrosion-Free: Unlike metal tanks, this plastic model will never rust, corrode, or leach harmful metals into your water. It's built to be tough and maintenance-free.
  • Essential Outlet Fittings: Comes pre-fitted with standard 25mm BSP outlet connections, making it easy to link to your pump or attach a hose for easy access to your stored water.

Technical Specifications

Specification
Capacity 500 Litres
Material Medium-Density Polyethylene (LDPE)
Colours Mist Green, Heritage Green, Light Grey, Dark Grey, Slate Grey, Beige and Black
UV Protection Yes, Full UV Stabilised
Food Grade Yes, Safe for Potable Water
Inlet & Outlet Standard 1" (25mm) BSP Threaded Fittings
Dimensions (Diameter x Height) Approximately 775mm x 1275mm
Weight (Empty) Approximately 18 kg
Best For Residential Gardens, Rain Harvesting, Emergency Storage

Delivery or Collection

Details
Delivery Estimate Typically 3-4 Weeks across Upper North Island
Shipping Cost Calculated at checkout based on your location.
Collections We often have a number of these tanks in stock at 21 Akatea Road, Glendene. These Tanks are relativly small and would fit in a small van or on a trailer.
Packaging Product is shipped as a Water tank without any wasteful packaging.
Installation This is a DIY-friendly product. Ensure the site is flat, stable, and clear of sharp objects.

Tank Standards

  • Potable Drinking Water: AS/NZS 4020:2005
  • Food Contact Requirements: AS/NZS 2070
  • Polyethylene Water Tanks (Material): AS/NZS 4766:2020

Versatile Uses for Your 500L Tank

What can you do with 500 litres of water? The possibilities are nearly endless! This versatile tank is the perfect partner for a sustainable lifestyle.

  • Rainwater Harvesting: Connect it to your downpipe and start collecting free, untreated water from your roof. It’s perfect for keeping your garden lush and green during summer water restrictions.
  • Emergency Water Supply: Be prepared for unexpected disruptions. Having 500 litres of fresh water on hand is a crucial safety net for your family in case of earthquakes, storms, or main supply issues.
  • Gardening & Irrigation: Say goodbye to high water bills. Use your stored rainwater for watering your vegetable patch, flower beds, and lawn with a hose or simple irrigation system.
  • Smallholdings & Animal Husbandry: A reliable, clean water source for chickens, rabbits and other small livestock.
  • General Outdoor Use: Keep a supply of water handy for cleaning outdoor equipment or washing the car.

Downloads

Water Tank Installation, Maintenance & Warranty Manual

Download our Manual above for more information.

Frequently Asked Questions

Is the 500L water tank suitable for drinking water?

Yes, absolutely. Our 500L tank is manufactured from a premium, food-grade polyethylene plastic that is perfectly safe for storing drinking water (potable water). For the best quality, we recommend regular tank maintenance and using a first-flush diverter if collecting rainwater from your roof.

How do I install my new 500 litre plastic water tank?

Installation is straightforward. Choose a location that is flat, stable, and can support the weight of a full tank (500L of water weighs 500kg). A level concrete pad or a compacted base of crusher metal (GAP 7 Stone) is ideal. Ensure the area is clear of sharp objects that could damage the base. Once positioned, you can connect your downpipe to the through the Leaf Cather, Install an Overflow, and attach a hose to the outlet fitting.

We also have Easy Connect diverters from your down pipe for small tanks like this, give us a call to discuss 09 390 2209

Does the tank come with a warranty?

Yes, we stand behind the quality of our products. This 500L water tank comes with a 20 year manufacturer's warranty against defects. Please refer to our warranty policy page or contact us for specific terms and duration.

Can I connect multiple 500L tanks together?

Yes, you can daisy-chain multiple tanks to increase your total water storage capacity. This requires additional plumbing fittings like tank connectors. It's important to plan your layout so that the tanks are on the same level to ensure they fill evenly.

What maintenance does a plastic water tank require?

Plastic water tanks are very low maintenance. The main task is to occasionally check and clean the inlet mesh filter and overflow to prevent blockages from leaves and debris. It is also good practice to inspect the inside of the tank every few years for any sediment buildup and clean it out if necessary.