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 attaching a water tank to capture a portion of that downpour: it’ll decrease your environmental footprint by lowering your demand on mains water and the quantity of stormwater runoff into rivers and oceans, and can also slash your water bill in the long-term.
Rainwater tanks are no more just huge, round and bad-looking; they come in all shapes and sizes that can make efficient use of small or tricky urban spaces.
Water for outdoor or indoor usage?
Easily the most important issue to consider before you acquire and install a water tank is how you would like to use the water.
Employing the water outdoors– for watering the garden and washing the car, for instance– is the simplest way to start, as you probably just need the supplier to install the tank, instead of a licensed plumber. And it will promptly cut your consumption of mains water.
Save a lot more by sending the water to your toilet, washing machine or grey water tank system, but you’ll require a licensed plumber to connect the rainwater tank to your mains supply.
What size rain water tank do I really need?
The storage capacity you choose will rely on the shapes and size of your household and garden. Round, squat tanks fit efficiently 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 location will also have to be considered. To help determine the size and shape that’s perfect for you, sellers often provide calculators on their sites, or your water authority may be able to help.
What else do I need to recognize before investing in a rain water tank?
Rain water tanks usually can be found in the following materials:
Metal tanks are created from corrugated or flat rolled metal, which can be galvanised or coated. They often feature a plastic inner lining (Aquaplate) that will boost the life of the tank and safeguard the water quality.
Polyethylene (plastic) tanks are prominent as they are comparatively cheap and durable. Because rust isn’t a conern, they are a pretty good option for people living near the coast. Other synthetic materials, like PVC and geotextile, are used 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 designed to withstand extreme heat levels. They’re not the cheapest possibility, and preferable for above-ground installation, while all other kinds can also be set up below ground.
Concrete tanks, more frequently used for agricultural and industrial purposes, won’t rust, burn, melt or blow away. They could be bought ready-made, or customized onsite.
Ask your local council and water supplier which rules and regulations apply in your area. You may need to submit a development or building application, and there may be rules around drinking rainwater or mosquito breeding prevention, as well as restrictions on the tank’s specific location, colour, height and labelling or noise regulations for a pump.
Are you remodeling, building new or retrofitting?
If you are renovating or building, in lieu of retrofitting, you may have to incorporate energy and water-efficient functions in your plans to abide by new legislative requirements.
When acquiring quotes, ask if there are any supplementary costs for delivery and installation; extra products (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, by which case you’ll need to look into the cost of special ground prep or excavation).
If you would like to connect the tank to your mains supply of water, factor in the cost of a licensed plumber, and charges for any extra work that needs to get done to your roof and/or guttering.
Can you access 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 range 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.