If it’s yellow, let it mellow. This tip might not be for everyone, but the toilet is one of the most water-intensive fixtures in the house. Do you need to flush every time?
Re-use your cooking liquid. Instead of dumping that water down the drain, try draining your cooking water into a large pot. Once it cools, you can use it to water your plants.
Shrink your lawn. Even better: lose the lawn completely. Instead, opt for a xeriscaped landscape that incorporates water wise ground cover, succulents, and other plants that thrive in drought conditions.