There aren’t many consolations to a rainy day– cosy lounge time, soothing sounds of drops on the roof, and possibly a rainbow or a puddle-splash afterwards. But you can add one more by building a water tank to capture a bit of that downpour: it’ll diminish your environmental footprint by reducing your demand on mains water and the volume of stormwater runoff into rivers and oceans, and can also trim your water bill in the longer term.
Rainwater tanks are no more just huge, round and unsightly; they come in all shapes and sizes that can make efficient use of minimal or tricky urban spaces.
Water for outdoor or indoor use?
Probably the most important issue to consider before you purchase and install a water tank is how you intend to use the water.
Utilizing the water outdoors– for watering the garden and washing the car, for instance– is the most convenient way to start, as you possibly just need the supplier to install the tank, as opposed to a licensed plumber. And it will instantly cut your usage of mains water.
Save much more by sending the rainwaer to your toilet, washing machine or hot water system, but you’ll require a licensed plumber to connect the water tank to your mains supply.
What size tank do I need to have?
The volume you choose will hinge on the shapes and size of your household and garden. Round, squat tanks fit adequately 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, although is more expensive.
Your roof area and the annual rainfall in your location will also need to be considered. To help determine the size and shape that’s best for you, sellers often provide calculators on their web sites, or your water authority may be able to help.
What else do I need to recognize before purchasing a rain water tank?
Rain water tanks normally come in the following materials:
Metal tanks are crafted from corrugated or flat rolled metal, which might be galvanised or coated. They often come with 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 comparatively cheap and durable. Because rust isn’t an issue, they are a great option for people living near the ocean. 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 durable, 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 choice, and more suitable for above-ground installation, while all other styles can also be installed below ground.
Concrete tanks, more often used for agricultural and industrial reasons, won’t rust, burn, melt or blow away. They might be bought ready-made, or customized onsite.
Ask your regional council and water supplier which rules and regulations are applicable in your region. You may need to forward a development or building application, and there may be rules around drinking rainwater or mosquito breeding prevention, together with restrictions on the tank’s placement, colour, height and labelling or noise regulations for a pump.
Are you renovating, building new or retrofitting?
If you are remodeling or building, in lieu of retrofitting, you may need to incorporate energy and water-efficient attributes in your plans hop over to these guys abide by new legislative requirements.
When securing quotes, ask if there are any further 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 work with gravity for water pressure); and a stand (unless you want to put it on the ground or below it, through which case you’ll need to factor in the cost of special ground prep or excavation).
If you want to connect the tank to your mains supply of water, think about the cost of a licensed plumber, and costs 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 grant 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, 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.