A liquid container is for supplying a liquid to a liquid jetting apparatus. The liquid container includes a liquid reservoir section, a sensor and an electrostatic capacitance. The liquid reservoir section stores electrically conductive liquid. The sensor is disposed at a location in the liquid reservoir section, for electrically detecting a condition of the conductive liquid at the location. The electrostatic capacitance is provided between a fixed potential and the conductive liquid, the electrostatic capacitance reducing extrinsic noise.