Cal. Pub. Util. Code § 105086

The district may exercise the right of eminent domain to take any property necessary or convenient to the exercise of the powers granted in this act. The district, in exercising that right, shall, in addition to the damage for the taking, injury, or destruction of property, also pay the cost, exclusive of betterment and with credit for salvage value, of removal, reconstruction, or relocation of any substitute facilities, including structures, railways, mains, pipes, conduits, wires, cables or poles of any public utility which is required to be moved to a new location.