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 another by installing a water tank to capture a portion of that downpour: it will decrease your environmental footprint by lowering your demand on mains water and the amount of stormwater runoff into rivers and oceans, and can also trim your water bill in the long-term.
Rainwater tanks are no longer just huge, round and hideous; they are available in all shapes and sizes that can make efficient use of modest or tricky urban spaces.
Water for outdoor or indoor usage?
The absolute most important issue to consider before you acquire and install a rainwater tank is how you intend to use the water.
Applying the water outdoors– for watering the garden and washing the car, for example– is the simplest way to start, as you most likely just need the supplier to install the water tank, instead of a licensed plumber. And it will promptly cut your consumption of mains water.
Save much more by sending the rainwaer to your toilet, washing machine or penzu.com water system, but you’ll need to have a licensed plumber to connect the tank to your mains supply.
What size tank do I need to have?
The storage capacity you choose will depend on the shapes and size of your household and garden. Round, squat tanks fit effectively 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, however 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 perfect for you, sellers often provide calculators on their web pages, or your water authority may have the opportunity to help.
What else do I need to recognize before acquiring a rainwater tank?
Rain water tanks normally come 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 quality of life of the tank and safeguard the water quality.
Polyethylene (plastic) tanks are well-liked as they are reasonably cheap and durable. Because rust isn’t a conern, they are a very good option for people living near the ocean. Other synthetic materials, such as PVC and geotextile, are applied 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 temps. They’re not the cheapest option, 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 intentions, won’t rust, burn, melt or blow away. They can be bought ready-made, or customized onsite.
Ask your community council and water supplier which rules and regulations are applicable 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, in addition to 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 restoring or building, in lieu of retrofitting, you may need to incorporate energy and water-efficient components in your plans to follow new legislative requirements.
When getting quotes, inquire if there are any supplementary costs for delivery and 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 make use of gravity for water pressure); and a stand (unless you wish 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 supply of water, consider the cost of a licensed plumber, and expenses for any additional work that needs to be done to your roof and/or guttering.
Can you receive a water tank rebate?
Consult 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 rainwater 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.