E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
E03B3/08—Obtaining and confining water by means of wells
E03B3/10—Obtaining and confining water by means of wells by means of pit wells
E03B3/11—Obtaining and confining water by means of wells by means of pit wells in combination with tubes, e.g. perforated, extending horizontally, or upwardly inclined, exterior to the pits