Rockford Waterworks Report.
The estimated population of Rockford, Ill., is 47,000, having increased to that number from the 31,051 of 1900. The waterworks system was built by the city in 1875-76 and is owned by the municipality. The source of supply is artesian wells; the mode of supply, direct pumping by low-service pumps to a reservoir of 1,100,000 gal. capacity. The average daily pumpage for the year, 355,407 gal.; total pumpage for the year, 1,301,278,950 gal.; average head pumped against, 67.5 lb.; average pressure carried for 75 :20 hours during fires, 81.23 lb. There were laid during the year 19,051 ft. of main of all sizes, and Superintendent D. R. Crowley in his report calls the attention of the city to the need of replacing the small mains throughout the city with larger ones, as the great number of small mains of 2-in. or less increases very materially the cost of pumpage and affords very poor service and fire orotection. All mains less than 4-in. should be at once replaced by 6-in. During 1908 469 services were placed—another reason for replacing all the small mains as recommended, as there is a constant growth in the department, and the small mains cannot supply the water, in case of a large demand for sprinkling in the dry season. Six hundred and forty-two meters were added during 1908—making the total number installed 2,563. Supt. Crowley also recommends that everv tap should be metered. The total number of services in use is 6,763; mains laid, 453,661.6 ft.—85.82 miles; hydrants set—4-5-in., 2-vvay and 3-way— 495—20 added last year; valves, 903—29 added last year: water tanks, 12; drinking fountains, 13; street standpipes, 18.