Various examples are provided for smart water systems. In one example, a method for providing water through a faucet includes detecting a voice request from a user; providing an indication of the voice request to control circuitry of an electrically operated valve coupled to a water supply line of the faucet; and activating the electrically operated valve to provide water through the faucet. In another example, a method includes detecting a request for water from a user; providing an indication of the request to control circuitry of an electrically operated valve coupled to a water supply line of the faucet; and activating the electrically operated valve to provide a specified amount of water through the faucet.