Читать книгу Sanitation of Mofussil Bazaars - G. W. Disney - Страница 7

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1. The ground round a well must first be excavated to a depth of at least 5 feet below surface level, and for a width of 5 feet round the well and sealed with puddled clay, the well lining being first rebuilt from this level where necessary, and continued up for a height of 2 feet 6 inches above ground-level; the top of the well must be sloped off to prevent vessels being placed on it, and consequent splashing getting back into the well. A properly made platform resting on suitable foundations, must be built round the well at 1 foot above at its highest point, and sloping off to ground-level at its lowest, with a ridge round it to prevent spill-water draining away indiscriminately and an opening at its lowest point, leading into a pucca drain, constructed with a suitable fall, and continued until natural drainage is reached, or outside the cone of filtration, so as to prevent any water lodging in the vicinity of the well.

2. A closed-in top prevents dust, which may convey pathogenic germs, gaining access to the water.