It shall be the duty of said board of commissioners to recommend to the governing body a schedule of rates and such renewal or extension of any plant, from time to time, as in the judgment of said board will be reasonable, proper, and just; also such employees as may be necessary to properly operate said plant or plants.

L. 1905, ch. 115, § 3; March 17; R.S. 1923, § 12-828.