We’re all trying to get smarter about our water usage, so here’s a couple of easy tips you can do yourself. If you think you have a leak somewhere in your plumbing system, just turn off all the water and go out to your water meter. If it’s moving, that means you’ve got a leak. A leaky toilet can fill an average backyard swimming pool in a month! So just put some food coloring in the tank and if the color shows up in the toilet bowl you need to fix it right away.