There aren’t many consolations to a rainy day– cosy couch time, soothing sounds of water on the roof, and perhaps a rainbow or a puddle-splash afterwards. But you can add yet another by attaching a water tank to capture a portion of that downpour: it’ll shrink your environmental footprint by lessening your demand on mains water and the amount of stormwater runoff into rivers and oceans, and can also reduce your water bill in the longer term.
Rainwater tanks are no longer just huge, round and unsightly; they are available in all sizes and shapes that can make efficient use of minimal or tricky urban spaces.
Water for outdoor or indoor usage?
The most important issue to consider before you buy 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 easiest way to start, as you probably just need the supplier to install the rainwater tank, as opposed to a licensed plumber. And it will instantly cut your utilization of mains water.
Save a lot Get More by sending the rainwaer to your toilet, washing machine or hot water system, but you’ll need to have a licensed plumber to connect the tank to your mains supply.
What size water tank do I need to have?
The storage capacity you choose will hinge on the shapes and size of your household and garden. Round, squat tanks fit efficiently under a deck, while slimline tanks are good for 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 area will also need to be considered. To help determine the size and shape that’s suitable for you, sellers often provide calculators on their online sites, or your water authority may be able to help.
What else do I need to know before buying a rainwater tank?
Rain water tanks generally can be found in the following materials:
Metal tanks are made from corrugated or flat rolled metal, which can be galvanised or coated. They often come with a plastic inner lining (Aquaplate) that will increase the quality of life of the tank and safeguard the water quality.
Polyethylene (plastic) tanks are well-liked as they are fairly cheap and durable. Because rust isn’t a conern, they are a good option for people living near the sea. Other synthetic materials, like PVC and geotextile, are utilized for bladder storage. Bladders are useful 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 temperatures. They’re not the cheapest possibility, and better for above-ground installation, while all other kinds can also be set up below ground.
Concrete tanks, more often used for agricultural and industrial purposes, won’t rust, burn, melt or blow away. They might be bought ready-made, or customized onsite.
Ask your community council and water supplier which rules and regulations apply in your region. 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 location, colour, height and labelling or noise regulations for a pump.
Are you refurbishing, building new or retrofitting?
If you are renovating or building, as opposed to retrofitting, you may have to incorporate energy and water-efficient elements in your plans to follow new legislative requirements.
When securing 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 employ gravity for water pressure); and a stand (unless you would like to put it on the ground or below it, through which case you’ll need to look into the cost of special ground prep or excavation).
If you wish to connect the tank to your mains water supply, factor in the cost of a licensed plumber, and prices for any supplementary work that needs to be done to your roof and/or guttering.
Can you obtain a water tank rebate?
Contact your local water or government authority to see if you’re entitled to a cash grant 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 fluctuate from around $700 to $2000, beginning with 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.