Installing a rainwater tank is a smart step towards water conservation, water independence and saving money. Additionally, rainwater tanks reduce stormwater runoff and demand for mains water, contributing to a healthier environment. Let’s take a look at the options.
Material Options for Rainwater Tanks
Rainwater tanks are available in four main materials – polyethylene, steel, fibreglass, and concrete.
Polyethylene Tanks: These are resilient, lightweight, and easy to transport. Plus, they come in a wide range of colours to blend perfectly into their surroundings.
Steel Tanks: These use Aquaplate or Zincalume and match the look of your home. They have a food-grade polymer lining on the inside, making them safe for water collection. They are durable, stylish, recyclable, and corrosion-resistant.
Fibreglass Tanks: Known for rust and chemical resistance, fibreglass tanks withstand extreme temperatures. More suitable for above-ground installation, they offer premium durability.
Concrete Tanks: These strong and versatile tanks offer excellent bushfire resistance. They can be installed above or underground and are adjustable to individual homeowner requirements.
Sizing Your Tank
A critical step in choosing a rainwater tank is determining the right size. Several factors can guide your decision:
- Average water consumption
- Local rainfall patterns
- Roof area draining to the tank
- Required security of water supply
- Placement of the tank
A larger tank volume will mean fewer periods without rainwater. So, if you have space, opt for the maximum size you can fit.
The Cost of Rainwater Tanks
The cost of rainwater tanks can vary significantly, ranging from a small free-standing model at around $700.00 to large, custom-built models costing up to $10,000.00.
Installation
To ensure your rainwater tank lasts for decades, opt for professional installation by a qualified plumber. The connection of a rainwater tank is regulated work, hence necessitating expertise for compliance and effectiveness.
Maintenance of Rainwater Tanks
Periodic maintenance of the tank and roof catchment system can help increase its lifespan. Inspecting gutters, roofs, inlets, insect-proofing, leaf filters, and the pump every six months is beneficial.
Regulations
Before you purchase a rainwater tank, check with your local council about rules and regulations, including any necessary development or building applications. Also, consider potential restrictions on the tank’s location, colour, height, labelling, and noise regulations for a pump.
Rainwater and Safety
While rainwater is free, it may contain contamination from pollution, animals and pests. So, it’s crucial to filter rainwater before drinking or brushing your teeth.
