Can I Connect a Water Tank to My Shed?

13 September

Need to Know: 

  • Connecting a water tank to your shed’s roof can help harvest rainwater and reduce your reliance on town water.
  • There are various tank options to choose from, including in-ground or above-ground tanks and different size choices. For drinking water, look for BPA-free, food-grade polyethylene tanks.
  • Consider whether to use one large tank or several smaller tanks to capture and store rainwater, with multiple smaller tanks acting as a failsafe.
  • Buffalo Built shed kits can be supplied with premium gutter profiles, flashing, and downpipes.

In this Article:

Picture of Ross Barker
Ross Barker

Managing Director, Buffalo Built

Guttering and Rainwater Harvesting with Your Buffalo Built Shed

Your shed roof is a convenient place to collect and channel rainwater runoff to minimise the volume of water leaving your property and allow you to use it on site.

Installing a water tank (or series of tanks) means you can make use of all that extra surface area on your shed’s roof, enhancing sustainability when it comes to water use around your home.

Rainwater can be harvested for irrigation, flushing toilets, watering residential gardens, and if you have a potable water storage system you can reduce your reliance on town water.

There is a whole raft of tank options to choose from including:

  • In-ground or above-ground options.
  • Size choices – from compact slimline tanks to very large reservoirs. Several tank manufacturers have online water catchment calculators to give you an idea of the amount of water you can expect to catch and store.
  • Potable water or irrigation use – if you intend to use your tank for drinking water, look for BPA-free, food-grade polyethylene (typically certified to AS/NZS4020, the Australian Standard for drinking water).
"Another consideration is whether you should opt for one large tank or several smaller tanks to capture and store rainwater. If your shed has a pitched roof, you could install one large tank at one end of the building to capture all water, or alternatively, you could place smaller tanks at each end of the building. Multiple smaller tanks can act as a failsafe, ensuring your water collection system will always be operational if something goes wrong with one tank."
Ross Barker
Ross Barker

What Does Your Buffalo Built Shed Include?

It’s always a good idea to let us know if you intend to install a new tank or connect to an existing one. That way, we can be sure to design your shed for the most efficient rainwater collection. If you don’t already have a tank or tanks in place, we can certainly add these to your shed kit if needed.

At Buffalo Built, we offer a variety of premium rainwater products which are available in contemporary, classic and matt COLORBOND® steel or ZINCALUME® steel options.

Our shed designs come standard with:

  • A choice of different gutter profiles
  • Flashing to all corners and openings
  • COLORBOND® steel or UPVC downpipes

Connecting Your Shed Guttering to a Tank

When you’re thinking about guttering profiles, your Buffalo Built team can offer advice here, as the gutter style and downpipe location can make a difference to your rainwater collection setup.

Different guttering profiles provide a variety of options that suit both the surface area of the shed roof and the potential rainfall of the local area. Knowing the average annual rainfall for your area, your intentions for the collected water, and your proposed tank location is a great start.

"Both suburban and rural sheds generally need to have gutters fitted and be plumbed to stormwater to meet council requirements. This means that whilst your shed guttering can be connected to a tank, once it’s full, an overflow mechanism will need to engage in order to redirect excess water into the stormwater system."
Ross Barker
Ross Barker

Using Your Tank for Fire Purposes

If your shed is classified as a farm building, the rules in Victoria state that it must be positioned within 60 metres (and not more than 90 metres from any part of the building) of a water supply with a minimum capacity of 144,000L.

There may be several other building requirements that you need to meet if you are installing a tank to meet fire regulations. Always check with your shed designer and your tank supplier to ensure you comply with these regulations.

Need a Shed with a Rainwater Tank? Buffalo Built Can Help.

The team at Buffalo Built can help you get the best shed and tank setup for your needs, plus we offer advice on permits, site preparation, trades and engineering.

Picture of Ross Barker

Ross Barker

Managing Director, Buffalo Built