Notes on the Quincy Waterworks System.
The Citizens’ Water Works Company, in charge of Engineer Brinkoetter, supplies the city of Quincy, Ill., with filtered Mississippi River water.
The pumping plant is located on the bank of the river at the foot of Maine street, which is the principal mercantile street of the city. The water flows into the intake well through a line of 30-inch wood-stave pipe. This pipe extends 1.400 feet into the river to a point beyond anv possible chance of contamination by city sewage A Worthington horizontal, triple-expansion pump ing engine, size 12 x 19 x 30 x 24 x 21 inch, pumps the raw water from the intake Well to the settling basin, which is located upon the hillside about 450 fet from the pumphouse and at an eleva tion of about 40 feet above the pump. This basin is 70 feet square and 10 feet deep.
Sulphate of iron and lime are used for coagu latiug purposes. After a sedimentation period of about one hour in the settling basin, the water flows by gravity to the filterhouse, where the purification process is completed by 14 Continental Jewell filters. The filtcrhotise is built over the clear well, and the filtered water flows by gravity from this clear well back to the pumphouse and into the water chamber of a 5,000,000-gallon Gordon-Maxwell high duty pump, which dis charges it directly into the distribution system, the surplus passing into a storage reservoir of 18,000,000 gallons capacity. This reservoir holds sufficient water to supply the city several days and is located upon a hill 2 miles from the pump ing station and at an elevation of 230 feet above the river. A 20-inch cast iron main connects the high duty pumps with this reservoir.
I’lie city depends upon steamers for fire pressure. There are 60 miles of mains in the distri bution system and 385 fire hydrants. The aver age daily consumption of water is 1,500,000 gallons, and since the daily capacity of the pumping and filtering plant is 5,000,000 gallons and fire pressure is not required, one shift of men working ten hours per day is all that is necessary to maintain a good supply in the storage reservoir. In addition to the two pumps in regular service, described above, there are also a low duty and a high duty Worthington compound 4,000,000-gallon pump, which are used as reserves when any extensive repairs are necessary on the larger pumps. The power is supplied from the Heine water-tube boilers, having a total capacity of 700 horsepower.