Section 144(1) in Kolkata Municipal Corporation Building Rules, 2009
(1)Rain, Water Harvesting (RWH)RWH system shall form a part of the building and shall have to be included in the plan, either for direct use of the rain water or for ground water recharging or both, in case of-(i)new building or buildings or any housing complex as per Environmental Impact Assessment Guideline issued by the State Government/Government of India;(ii)expansion of any existing building or buildings or housing complex, as per Environmental Impact Assessment Guidelines Issued by the State Government/Govt. of India.This system shall comply with Central and State statutory requirements laid down in the relevant Acts and bye-Laws.
