Filtration Newark, O., will substitute mechanical filtration instead of that installed. The people of the North Side of Pittsburg are promised filter water in twelve months. At Columbus, O., Supt. O’Shaughnessy states that improvements in the filter plant will cost $75,000. Bacteriological and chemical analyses of the river water supply at Rockford, Ill., show it to be free from impurities. The residents of Danville, 111., have had some annoyance with discolored water. The highest test of turbidity showed .500 and alkalinity .36. The Eagle of Marinette, Wis., says that both that city and Menominee will be obliged before long to take up the question of water purification. Water Rates Jamestown. N. Y., has secured a uniform water rate.