Wasting water is not smart. Unfortunately, many of us do it unintentionally. The Hydrao is one of many devices you can pick up to start saving water. This smart showerhead has LED lights that change color when you cross preset thresholds. It communicates with your mobile device as you use more water.
The Hydrao has an app that lets you change thresholds and track water usage for each shower. It adapts to your current pipe and takes its power from the water flow. You can find this Bluetooth enabled showerhead here.