Geoff, being in central Texas we have scorching sun and drought conditions. For my urban landscape, I've been putting in hugel beds where I can, collecting rainwater, have wicking beds, plans for some swales, and take advantage of shade where I can.
One thing I've been doing is collecting water from my air conditioner next to my house in plastic tubs that water plants next to them. The only thing I have to be careful of and not to block the drip in any way. Have it drip on a sloped rock that directs to plants next to it.
Have thriving fig and mandarin container plants that are alive due to the water from. I'm looking at putting in a small bed of perennial herbs in the ground next to my air conditioner and enclosed by rocks to provide some shade.