If you’ve ever tried to grow a vegetable garden in Australia, you’ll know that it isn’t as easy as it first appears. Even if you plant your spring vegetables at the very start of the season they’ll be trying to ripen during summer. If a solid heatwave sets in you can admire lush vegetables in the morning and dead plants in the evening. We’re in Melbourne, which has permanent water restrictions, so even if we could afford to water our garden all the time we wouldn’t be allowed to.
One of the benefits of this house is that it was built during a drought. As a result it has approximately 10,000 litres of water tank capacity underneath the deck, and the entire roof area feeds into it. We connected the whole vegetable garden to the tanks with an irrigation system, so we can literally run out into the heat, turn the system on for five minutes, and hide back inside our cool house again. Our vegetables survive and we can eat food that hasn’t got any attached miles of transport.
The problem for us is the pump. It might help us collect and save water, but it’s at the cost of electricity. I have no idea if the emissions from running it are more or less than the emissions generated by how far our food travels, but I do know that it’s noisy and irritating to run.
We need to find a better solution to the electric pump, but in the interim we’ve got a wall of buckets in the shower. They’re old yoghurt containers that we’re reusing, and each has a 2 litre capacity. In winter we just have a couple on the floor of the shower and we scale up for the summer months where we end up with as many buckets as we have in the house.
A secondary benefit to the buckets is that we can fill the first one with the cold water in the hot water pipes. We’re not wasting hot water waiting for it to get warm, or the energy used to heat it, because as soon as I sense the temperature difference I can turn the tap off. It makes showering easier on the days when I have the kids in with me, because I can sort out one thing at a time and I know that when they’re ready we can just get in to water that’s already going to be the right temperature.
By using water from our showers we are not only able to reuse our water, but we can also reduce the electricity from the pump. We can water just the plants that need watering, and therefore not turn on the pump at all, or we can pour the water into a 60 litre bucket that sits underneath our laundry window and also feeds into the irrigation system. We’re less likely to empty the water tanks, which happened last year, and more likely to get through the hottest months with our garden intact. It’s a small change, but it has a big impact for us.
If you’re playing along at home…
…can you reuse the water from your showers or elsewhere in the house to water plants? Please comment below if you’ve found another use for the grey water from your showers or a better alternative to buckets.