Excerpt from Report of the Commissioners of the District of Columbia, Vol. 2: For the Year Ended June 30, 1897 The prevention of water waste will have a marked influence oii the problem of purifying the Potomac water by filtration, the cost of such filtration and the difficulty of installing the necessary plant being a direct function Of the amount of water to be filtered. As the popala tion on the banks of the Potomac increases, the necessity for such filtration will become more and more imminent.

Numerous figures could be given, if space permitted, in support of the statements made above, but such detail is not considered necessary at present.

A synopsis of the work of the water department during the past fiscal year shows that feet of water mains were laid; that high service mains were extended to Takoma Park and other points hereto fore without water facilities; and that the middle-service system has also been extended to include certain areas of the low service in which the pressure was insufficient to furnish a fair supply.

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