A more convenient option is considered to be single-lever faucets, which are easy to start with one hand. On faucets with a high spout, such a lever is located on the side, on compact models it is located on top. Using such a faucet is especially convenient during cooking. Also, single-lever faucets are slightly cheaper than similar models with two valves. https://www.vaca-ps.org/blogs/291479/Eco-Friendly-Features-to-Consider-for-Bathrooms-in-Your-House