We're not on water restrictions here, thankfully, but I do still try to be mindful of water usage (because the day may come!!). Up until recently, we were renting so never got to see what our water usage was like, and now we're living in our own home but we haven't been here long enough to get an idea of what's going on with our usage (I'm not even sure if we will be paying the rates, DH's step-grandparents are handling the trust, which the house is part of so we will probably never see a bill, it'll go straight to them in Melbourne).
Personally, I wash quite a lot - DH has work clothes that need doing twice a week (he only has three uniforms), and I'm wearing the same five or so outfits day in, day out because I'm preggers and refuse to spend money on maternity clothes when I have a few bits and pieces that get me through (babydoll tops, hipster jeans etc that fit under or over my belly), and DD is consantly getting herself filthy so she goes through a fair few sets of clothes...
So I usually let it build up as much as I can, then dedicate a whole day to doing nothing but laundry. Sometimes, that ends up being two or even three days a week of load after load, especially when you throw in things like towels, bed linens etc. I only do half loads for things like DH's work clothes (our washing machine is massive so it fits a good week's worth of stuff, but we can adjust the water levels so I'm not wasting huge amounts on three sets of clothes), and I try to make a fuller load by doing my underwear and warm-wash stuff with DD's clothes (I like having my knickers washed in her sensitive detergent, too!!), and then just doing all the black clothes (that's pretty much all DH and I wear, denim and black stuff) together.