The ACT Government offers a program for its residents called “The Indoor Water Tune-up”. Basically, they subsidise the cost of a plumber to visit your place, install a variety of simple water saving devices (like tap aerators, water-saving shower heads, etc), and give you advice. Additionally, you become eligible for other incentive programs for things like replacing single-flush toilets with dual flush. The cost to you is $30.
(Its worth checking the rest of the Think Water website too – there’s a number of other incentive and rebate programs you may not have been aware of for things like water tanks, water-saving shower heads, etc)
Even though I’ve already done a few things on my own in this area (replaced all the shower-heads, gone with a front-loading washing machine, etc), I went ahead and signed up. I certainly can’t complain about the service – when I rang to register, they offered me an appointment the next day! The guy who came round was great – friendly, punctual. Most importantly, he was a wealth of knowledge – I now know a lot more about what to consider when replacing my toilets with water efficient options.
I’m not sure how much longer the program is going to go, but I’d recommend it. If you’ve already done the obvious water saving steps, its $30 to have a plumber visit and advise you (which is good value in itself). And if you haven’t even begun to consider water efficiency, its a no-brainer: the value of a new shower head, plus the savings in water and electricity bills should have you well in front.