There aren’t many consolations to a rainy day– cosy sofa time, soothing sounds of drops on the roof, and possibly 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 reduce your environmental footprint by decreasing your demand on mains water and the quantity of stormwater runoff into rivers and oceans, and can also trim your water bill in the long term.
Rainwater tanks are no more just huge, round and bad-looking; they can be found in all sizes and shapes that can make efficient use of small or tricky urban spaces.
Water for outdoor or indoor use?
The most important issue to consider before you purchase and install a rainwater tank is how you want to use the water.
Making use of the water outdoors– for watering the garden and washing the car, for example– is the easiest way to start, as you most likely just need the supplier to install the tank, rather than a licensed plumber. And it will immediately cut your utilization of mains water.
Save lots more by sending the water to your toilet, washing machine or water system, but you’ll require a licensed plumber to connect the tank to your mains supply.
What size tank do I need?
The volume you choose will depend on the shapes and size of your household and garden. Round, squat tanks fit well 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 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 web pages, or your water authority may be able to help.
What else do I need to recognize before acquiring a rain water tank?
Water tanks normally can be found 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 boost the life of the tank and shield the water quality.
Polyethylene (plastic) tanks are well-known as they are relatively cheap and durable. Because rust isn’t a conern, they are a good option for people living near the ocean. Other synthetic materials, like PVC and geotextile, are used for bladder storage. Bladders are useful for water storage below a deck or floor; while their material is strong, it’s not intended for outdoor installation.
Fibreglass tanks are rust and chemical-resistant and manufactured to withstand extreme temps. They’re not the cheapest solution, and more suitable for above-ground installation, while all other types can also be set up below ground.
Concrete tanks, more frequently used for agricultural and industrial intentions, 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 submit a development or building application, and there may be policies around drinking rainwater or mosquito breeding prevention, together with restrictions on the tank’s specific location, colour, height and labelling or noise regulations for a pump.
Are you renovating, building new or retrofitting?
If you are refurbishing or building, instead of retrofitting, you may need to incorporate energy and water-efficient features in your plans to comply with new legislative requirements.
When getting quotes, ask if there are any further costs for delivery and penzu.com official installation; extra products (such as pipes, fittings and taps); optional extras (such as a first-flush or backflow-prevention device); a pump (unless you can utilize gravity for water pressure); and a stand (unless you intend to put it on the ground or below it, in which case you’ll need to factor in the cost of special ground prep or excavation).
If you intend to connect the tank to your mains water system, factor in the cost of a licensed plumber, and costs for any additional work that needs to be done to your roof and/or guttering.
Can you acquire 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 depend on the size of the 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.