For those who are annoyed with a shower that gives you no option for how much water comes out of it (only hot to cold), you can buy these toggle switches. I got one along with a low flow shower head once, but I'm really not sure who carries them alone.
You can control the water flow with them; from full to a bare trickle. I usually turn it almost off when I'm shampooing and soaping and put it back on full when I'm rinsing off. It probably takes a 7.5 gallon shower down to 3 gallons or less! I'm still fully clean, spent the same time in the shower, but I used so much less water and helped the environment, too! Buwaaa!
By thintieguy from Los Angeles
When I shower, I turn off the water while I lather up, shampoo my hair, or shave my legs. I'm amazed at the amount of water I save by only having the water on twice instead of running it the entire shower.
Have you ever not had hot water one morning and wanted to take a shower? All you need to do is heat up a 1/2 gallon of water in a good sized pot or tea kettle.
If you have a shower and only one tap, you know you get cold water or boiling hot before getting the right temperature. All you have to do is mark the tap with a marker or whiteout once you find the right setting you like.