Quality of Water Supply at Waseca, Mian., Is Now Good
The Minnesota State Board of Health, Division of Sanitation, has made a report on the public water supply at Waseca from which the following extracts are taken:
This water supply is obtained from three drilled wells located in the vicinity of the pumping station. On February 8, 1918, the condition of the wells from a sanitary point of view was unsatisfactory and certain recommendations were made for the improvement of the same. On July 9, an investigation was made to determine whether these recommendations had been complied with. It was found that the openings at the top of the wells had been effectively sealed so as to make it impossible for waste water to enter the wells at the top. The end of the trench immediately around the casing of well No 1 had been filled with concrete level to the floor of the pumping station. A new roof had been installed on the ground collecting reservoir and all openings at the top were sealed. Samples were collected on the discharge pipe from the wells and on the distribution system. The analytical results of practically all these samples were unsatisfactory, possibly due to the fact that new improvements had just been made. It was recommended on July 18 that die system be disinfected with hypochlorite of lime. This was done on July 23, and on July 27 samples were again collected. The analytical results of these samples were unsatisfactory. On August 22 the system was again disinfected, and oil August 24 samples were again collected. The analytical results of these samples were satisfactory. The sanitary aspect of this supply is satisfactory.
The bacteriological examination of samples collected on the discharge in the pumping station and on the distribution system shows the water to be of good sanitary quality, as evidenced by the very low bacterial counts in five of the six samples. The physical examination shows a water with very low turbidity, moderately high color, and a faint earthly odor. The chemical examination shows a relatively hard water with no incrusting material.