Abstract: A thermostat-controlled automatic water valve can be used to turn water from a faucet/spigot on or off automatically based on a preset air temperature. The device is compact, easy to threadingly install and can be used to reliably satisfy the watering or cooling needs of livestock or growing plants. It can also be connected to a cooling mist system enabling it to automatically turn on if the thermostat/temperature controller senses a certain set activation temperature. Building owners can also employ this item to automatically run water to keep pipes from freezing or other similar tasks/events. The device measures ambient temperature and is programmable.