Water tanks in Tasmania

Tasmania sorts tank work by risk under the Building Act 2016. A new rainwater or firefighting tank is Category 2 low risk plumbing work. Source

26%of Australian households used a rainwater tank as a water source in 2013 (ABS)

611 mmaverage yearly rain at Hobart (Ellerslie Road) (BoM)

0open rebate programs we found

2suppliers with a checked source for TAS

Do I need approval?

Check

Building

Installing a rainwater tank may need planning approval and may need a building permit. Ask your council. City of Launceston

Category 2

Plumbing

Installing a new rainwater or firefighting tank is Category 2 low risk plumbing work under the Building Act 2016. Replacing an existing tank is Category 1. Sorell Council

Required

Overflow

The overflow must connect to the property stormwater system or discharge in a way the council plumbing officer approves. City of Launceston

Bushfire water

We have not loaded a statewide static water table for Tasmania. Fire water requirements come from your council, development conditions or fire service.

Work out your lot

New homes and renovations

Installing a new rainwater or firefighting storage tank is Category 2 plumbing work; replacing an existing tank is Category 1. Sorell Council

What size works here

Hobart (Ellerslie Road) averages 611 mm of rain a year. Bureau of Meteorology

If the tank is your only supply, size it for your driest months in the size calculator rather than the yearly average.

1,000 L 3,000 L 5,000 L 10,000 L 22,500 L 46,400 L

Size a tank for TAS

Rebates

We found no open household program on 13 Nov 2026. Your council or water utility may still run one.

From council and water-utility pages, checked 13 Nov 2026. All rebates

Suppliers for TAS

Supplier	Materials	Delivery area, as the supplier states it
Kingspan Water Tanks	steel, poly	Australia-wide
Bunnings (special order) stockist	poly, steel	Stores Australia-wide; tanks are mostly special order

Unclaimed listings from the suppliers' own pages, checked 13 Nov 2026. We have checked suppliers mainly for south east Queensland and northern NSW so far; more for TAS follow. Supply TAS? Claim or add a listing.

Questions

Do I need a building permit?

It depends on the council and the site. Launceston says installation may need planning approval and may need a building permit. City of Launceston

Where does the overflow go?

Into the property stormwater system or another outlet the council plumbing officer approves. City of Launceston