Household Water

Using less waterApartment block pool and shower head

Using less water in your home, reusing water or harvesting rainwater is simple and can save you money on water and energy bills. Easy steps include: 


Greywater systems recycle and reuse water from your shower or laundry, for example, to flush toilets or water the garden. There is a range of approaches and products for greywater reuse for non-potable use.  Council will generally approve greywater reuse schemes based on their likelihood of succeeding, call Council for more information, uses and greywater product tips.

Rainwater tanks are a great way to decrease your demand on potable water, as well as reducing the stormwater run-off which can pollute waterways.

Tank water can be used for purposes such as flushing toilets, washing clothing, topping up swimming pools, watering the garden or washing your car.

Do I need a development application to install a rainwater tank?

Rainwater tank

Willoughby City Council residents are not required to lodge a development application (DA) if tank/s are:

  • above ground with the capacity not exceeding 10 000 litres;
  • located behind the building line or in the rear yard of a property containing a heritage item; and
  • 450mm from each lot boundary where the tank exceeds 1.8 metres in height and setback 10 metres from a lot boundary if located in an E4 - Environmental Living Zone (or scenic protection zone).

For all other cases, phone Council’s planning team on 9777 1000.

Hot water 

Hot water is the second largest segment of household energy use in Australian homes so it is worth exploring best energy efficient hot water systems and solutions to suit your home. See our energy section on hot water, come along to our next workshop on hot water or visit YOUR HOME for more information.


Water that runs off from your roof, driveway and street is called stormwater. Stormwater flows into local waterways and out to Sydney Harbour or Lane Cove River. Litter, dog droppings, cigarette butts, household cleaning products, oils and chemicals run into waterways and affect our water quality. Be part of the solution by using and disposing of products thoughtfully as we clean up our streets and creeks. For maps on your local catchment see Streets to Creeks. We regularly monitor and report on water quality in Willoughby. For more information on Council run Household Chemical Collections see diary dates.