February 17, 1916: Municipal Journalarticle. Fertilizer from Activated Sludge. “Milwaukee, Wis.-The sewerage commission that is directing the construction of Milwaukee’s modern system of sewage disposal with a big plant on Jones island, operated by the new activated sludge method, is about ready to experiment with the sludge deposits left after streams of sewage have been purified. Chief engineer Hatton believes that this sludge can be manufactured into a commercial fertilizer which will command a market value ranging from $10 to $20 per ton. If the experiments are successful the sludge will be the source of considerable revenue which will decrease the operating expenses of the system which with its large intercepting sewers draining the whole city, will cost $10,000,000 or more. A special building will be erected for the treatment of the refuse to be worked into fertilizer form. Nine of the large concrete tanks recently built for the treatment of continuous flows of sewage are in operation and the other two will soon be ready.”
February 17, 1916: Municipal Journalarticle. Repair Flood-Damaged Water System. “San Diego, Cal.-The San Diego water system was hard hit by the storm which caused the flooding of the Otay valley. According to belief of the water department officials the conduit system is almost ruined. In places miles of trestle have been carried down the mountains. In other places the concrete flume was washed out by the hundred yards. To carry water from Morena dam to Upper Otay, as proposed, will entail expensive work and six months or more time, according to the belief of manager of operation Lockwood, who waited an official report from supervisor Wueste and engineer Cromwell. Morena dam stood the storm.”
Reference: Municipal Journal.1916. 40:7(February 17,1916): 244.