There aren’t many consolations to a rainy day– cosy couch time, soothing sounds of drops on the roof, and possibly a rainbow or a puddle-splash afterwards. But you can add one more by attaching a water tank to capture a bit of that downpour: it’ll diminish your environmental footprint by lowering your demand on mains water and the volume of stormwater runoff into rivers and oceans, and can also slash your water bill in the long-term.
Rainwater tanks are no longer just huge, round and unsightly; they come in all shapes and sizes that can make efficient use of tiny or tricky urban spaces.
Water for outdoor or indoor application?
Easily the most important issue to consider before you acquire and install a water tank is how you intend 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 probably just need the supplier to set up the water tank, rather than a licensed plumber. And it will instantly cut your usage of mains water.
Save a lot more by sending the rain water 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 water tank do I need?
The 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 agree with 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 perfect for you, sellers often provide calculators on their web sites, or your water authority may have the opportunity to help.
What else do I need to recognize before acquiring a rainwater tank?
Rainwater tanks typically are available in the following materials:
Metal tanks are crafted from corrugated or flat rolled metal, which can be galvanised or coated. They often feature a plastic inner lining (Aquaplate) that will enhance the quality of life of the tank and shield the water quality.
Polyethylene (plastic) tanks are well-liked as they are fairly cheap and durable. Because rust isn’t a problem, they are a very good option for people living near the ocean. 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 durable, 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 solution, and better for above-ground installation, while all other styles can also be installed below ground.
Concrete tanks, often used for agricultural and industrial intentions, won’t rust, burn, melt or blow away. They may be bought ready-made, or customized onsite.
Ask your local area council and caravan water tanks supplier which rules and regulations are applicable in your 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 renovating, building new or retrofitting?
If you are remodeling or building, as opposed to retrofitting, you may need to incorporate energy and water-efficient characteristics in your plans to observe new legislative requirements.
When getting quotes, inquire if there are any supplementary costs for delivery and installation; extra materials (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 want to put it on the ground or below it, by which case you’ll need to think about the cost of special ground prep or excavation).
If you want to connect the tank to your mains water system, think about the cost of a licensed plumber, and charges for any extra work that needs to be done to your roof and/or guttering.
Can you access a water tank rebate?
Talk to your local water or government authority to see if you’re entitled to a cash discount 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, beginning with 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.