There aren’t many consolations to a rainy day– cosy couch time, soothing sounds of drops on the roof, and maybe a rainbow or a puddle-splash afterwards. But you can add another by building a water tank to capture a bit of that downpour: it will diminish your environmental footprint by reducing your demand on mains water and the volume of stormwater runoff into rivers and oceans, and can also reduce your water bill in the long run.
Rainwater tanks are no longer just huge, round and hideous; they are available in all shapes and sizes that can make efficient use of minimal or tricky urban spaces.
Water for outdoor or indoor usage?
Probably the most important issue to consider before you buy and install a water tank is how you would like to use the water.
Applying the water outdoors– for watering the garden and washing the car, as an example– is the most convenient way to start, as you probably just need the supplier to set up the rainwater tank, instead of a licensed plumber. And it will promptly cut your utilization of mains water.
Save lots more by sending the rainwaer to your toilet, washing machine or water system, but you’ll need to have a licensed plumber to connect the water tank to your mains supply.
What size rain water tank do I need to have?
The capacity you choose will hinge on the shapes and size of your household and garden. Round, squat tanks fit very well under a deck, while slimline tanks agree with narrow spaces. An underfloor tank or bladder storage system is a good out-of-sight space saver, but is more expensive.
Your roof area and the annual rainfall in your region will also have to be considered. To help determine the size and shape that’s suitable for you, sellers often provide calculators on their internet sites, or your water authority may be able to help.
What else do I need to identify before acquiring a water tank?
Rain water tanks typically can be found in the following materials:
Metal tanks are crafted from corrugated or flat rolled metal, which may be galvanised or coated. They often include a plastic inner lining (Aquaplate) that will boost the quality of life of the tank and shield the water quality.
Polyethylene (plastic) tanks are prominent as they are relatively cheap and durable. Because rust isn’t an issue, they are a great option for people living near the sea. Other synthetic materials, such as PVC and geotextile, are applied for bladder storage. Bladders are useful for water storage below a deck or floor; while their material is strong, it’s not intended for outdoor installation.
Fibreglass tanks are rust and chemical-resistant and designed to withstand extreme temperature levels. They’re not the cheapest option, and more suitable for above-ground installation, while all other types can also be installed below ground.
Concrete tanks, more often used for agricultural and industrial applications, won’t rust, burn, melt or blow away. They could be bought ready-made, or custom made onsite.
Ask your regional council and water tanks perth supplier which rules and regulations are applicable in your location. You may need to submit a development or building application, and there may be policies around drinking rainwater or mosquito breeding prevention, along with restrictions on the tank’s location, colour, height and labelling or noise regulations for a pump.
Are you remodeling, building new or retrofitting?
If you are restoring or building, instead of retrofitting, you may need to incorporate energy and water-efficient components in your plans to comply with new legislative requirements.
When getting quotes, ask if there are any supplementary costs for delivery and installation; extra materials (such as pipes, fittings and taps); alternative extras (such as a first-flush or backflow-prevention device); a pump (unless you can make use of gravity for water pressure); and a stand (unless you want to put it on the ground or below it, in which case you’ll need to factor in the cost of special ground prep or excavation).
If you would like to connect the tank to your mains water supply, consider the cost of a licensed plumber, and costs for any supplementary work that needs to get done to your roof and/or guttering.
Can you acquire a water tank rebate?
Check with your local water or government authority to see if you’re entitled to a cash rebate or bill reduction– the answer may hinge on the size of the tank and whether it’s connected to a toilet and/or washing machine.
Rainwater tanks can vary from around $700 to $2000, starting from a small, freestanding model without pump or extras, to large, custom-built models. Costs vary basing on the size, material, finish and strength of the tank.