. Health in home and town. Interior of Filter a filter. The upper layer of sand filters out most ofthe coarse particles, so that the filters have to be keptclean. About once a month the upper inch of sandis scraped off, and about once a year the rest of thesand is taken out, washed, and replaced. The Pure Water.—The filtered water is stored in thereservoir until it is pumped to the large reservoir in thecity, whither it goes through the large water-mains inthe streets to all the buildings. 184 HEALTH IN HOME AND TOWN. Results of Filtering Water. — Filtering a water-sup-ply improves it greatly.
. Health in home and town. Interior of Filter a filter. The upper layer of sand filters out most ofthe coarse particles, so that the filters have to be keptclean. About once a month the upper inch of sandis scraped off, and about once a year the rest of thesand is taken out, washed, and replaced. The Pure Water.—The filtered water is stored in thereservoir until it is pumped to the large reservoir in thecity, whither it goes through the large water-mains inthe streets to all the buildings. 184 HEALTH IN HOME AND TOWN. Results of Filtering Water. — Filtering a water-sup-ply improves it greatly. Dark colored water .will comefrom the filters clear and sparkling. A large number ofthe germs are also removed. Filtering drinking watersaves many lives, especially from typhoid fever and diar-rhoeal diseases. It saves the lives of many children. In a city 250 persons out ofevery 100,000 inhabitantsmay die of typhoid filtering the water-sup-ply, the deaths from thisdisease may be reduced tofive out of every 100, careful and scientificsupervision of the filters isnecessary for the surestresults. Even with thegreatest care, some diseasegerms may be carriedthrough the filters, and remain in the drinking a further safeguard the source of the water shouldbe protected from all dangerous pollution, even thoughthe water may be filtered. When there is an epidemicof some contagious disease, the water should be boiledbefore drinking it. Boil even the filtered water whenthere is any possibility
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsanitat, bookyear1912
