Section 138 in Kolkata Municipal Corporation Building Rules, 2009
138. Plumbing Services.
(1)The planning, design, construction and installation of water supply, drainage and sanitation and gas supply system shall be in accordance with the provisions of water supply, drainage and sanitation, gas supply and plumbing services of the latest edition of National Building Code of India.(2)The underground reservoir shall be constructed in such a way that the manhole portion must be raised 300 mm. or more above ground level to avoid surface contamination. The inlet supply pipe always be kept above the higher level of the stored water surface.(3)All other requirements regarding plumbing services, not specifically mentioned in this rule shall conform to the provisions of the latest edition of National Building Code of India.(4)The depth of the underground water reservoir/septic tank/inspection pits or manhole should not be more than the shallowest foundation depth and the distance between the edge of foundation and such underground structure should not be less than 50% of the width of the. underground structure provided however, this provision will not be applicable for such structures appearing at a distance of 4.0 m. or more from the main foundation line of the building.
