(1) In digging a well or other underground facilities to store water, sewage or filth, etc., a distance of not less than two meters must be left from the boundary line. In digging a pond, ditch, or cellar, a distance of not less than one half of their depth must be left from the boundary line.
(2) In the construction work mentioned in the preceding paragraph, appropriate measures must be taken to prevent the collapse of earth and sand, or the infiltration of sewage or polluted liquids into adjoining land.