There aren’t many consolations to a rainy day– cosy couch time, soothing sounds of drops on the roof, and perhaps a rainbow or a puddle-splash afterwards. But you can add another by installing a water tank to capture a portion of that downpour: it will shrink your environmental footprint by decreasing your demand on mains water and the amount of stormwater runoff into rivers and oceans, and can also slash your water bill in the long run.
Rainwater tanks are no longer just huge, round and unsightly; they can be found in all shapes and sizes that can make efficient use of tiny or tricky urban spaces.
Water for outdoor or indoor application?
The absolute most important issue to consider before you get and install a water tank is how you want to use the water.
Employing the water outdoors– for watering the garden and washing the car, for instance– is the fastest way to start, as you possibly just need the supplier to set up the water tank, instead of a licensed plumber. And it will instantly cut your consumption of mains water.
What size water tank do I require?
The capacity you choose will hinge on the shapes and size of your household and garden. Round, squat tanks fit effectively 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, however, 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 appropriate 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 recognize before investing in a rain water tank?
Water tanks normally come in the following materials:
Metal tanks are crafted from corrugated or flat rolled metal, which can be galvanised or coated. They often include a plastic inner lining (Aquaplate) that will increase the life of the tank and safeguard the water quality.
Polyethylene (plastic) tanks are well-known as they are relatively cheap and durable. Because rust isn’t an issue, they are a good option for people living near the ocean. Other synthetic materials, like PVC and geotextile, are utilized for bladder storage. Bladders work for water storage below a deck or floor; while their material is tough, it’s not intended for outdoor installation.
Fibreglass tanks are rust and chemical-resistant and manufactured to withstand extreme heat levels. They’re not the cheapest alternative, and preferable for above-ground installation, while all other kinds can also be installed below ground.
Concrete tanks, more often used for agricultural and industrial objectives, won’t rust, burn, melt or blow away. They could be bought ready-made, or customized onsite.
Ask your local area council and water supplier which rules and regulations are applicable in your local area. You may need to provide a development or building application, and there may be policies around drinking rainwater or mosquito breeding prevention, as well as restrictions on the tank’s placement, colour, height and labelling or noise regulations for a pump.
Are you remodeling, building new or retrofitting?
If you are restoring or building, rather than retrofitting, you may have to incorporate energy and water-efficient features in your plans to satisfy new legislative requirements.
When obtaining quotes, ask if there are any supplementary costs for delivery and installation; extra components (such as pipes, fittings and taps); optional extras (such as a first-flush or backflow-prevention device); a pump (unless you can use gravity for water pressure); and a stand (unless you intend to put it on the ground or below it, by which case you’ll need to look into the cost of special ground prep or excavation).
If you intend to connect the tank to your mains supply of water, factor in the cost of a licensed plumber, and expenses for any extra work that needs to be done to your roof and/or guttering.
Can you obtain a water tank rebate?
Talk to your local water or government authority to see if you’re entitled to a cash rebate or bill reduction– the answer may rely on the size of the rain water 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 depending upon the size, material, finish and strength of the tank.