California Code, Public Utilities Code - PUC § 16812

If the cost of any public utility works named in a petition so far exceeds the revenues of the district derived from the operation of its public utilities, in addition to the other necessary expenses of the district, that it is necessary to incur a district bonded indebtedness, each proposition shall specify the amount of the necessary bonded indebtedness, its rate of interest, and the question whether such bonded indebtedness shall be incurred.