Another matter of tremendous importance to the growing municipality was that of the supply of water. The Spring Valley Water Company had a monopoly of this necessity, but demand for municipal water to be brought from the Sierras was strong. A committee of experts had been appointed to pass upon the various sources of supply. Ruef appeared before them as spokesman for the Supervisors. The experts resigned when it was made clear to them that instead of being permitted to make an adequate study of all available sources of supply they were to report upon the Bay Cities project alone.[27] After the ousting of the Schmitz-Ruef administration the Bay Cities project was ignored and bonds authorized to bring water from Hetch-Hetchy valley. The Spring Valley Water Company, however, has been successful in blocking this project, and in 1914, San Francisco seems almost as far away from realizing her ambition for a supply of pure water as in 1905-6 when Ruef and his followers were at the height of their power. The public-service problem which was attracting the most attention at the time of the great fire, was that of street-car transportation. The principal lines had passed into the hands of the United Railroads.[28] The corporation had, at the time of Schmitz's election in 1905, practically a monopoly of the San Francisco street-car service. The company's principal lines were operated by the cable system. But fully five years before the fire, all traction officials as well as the general public, recognized that San Francisco had outgrown the cable road. It was admitted that electric lines must be substituted for the cable, but there was sharp division as to the character of the electric lines which should be installed. The officials of the United Railroads proposed the overhead trolley method of propulsion; the public, so far as it could find expression, declared for the underground conduit system.[29] In taking this position, the public was in reality backing up the municipal engineers, who had been sent to Eastern States to investigate electric transportation systems, and who had found in favor of the conduit and against the trolley.[30] The San Francisco Merchants' Association, however, apparently dissatisfied with the reports of the engineers employed by the municipality, employed Mr. William Barclay Parsons to report on the relative merits of the trolley and the conduit systems. Mr. Parsons took issue with the city's engineers, and recommended the trolley as against the conduit.[31] The directors of the Merchants' Association thereupon declared for the trolley system. Criticism of this action of the directors was followed by submission of the question to a referendum vote of the Association membership. The members voted in opposition to the directors, declaring against the trolley and for the conduit.[32]