ALL private and public buildings, residential buildings, agricultural plantations and other priority farms will soon be required to put up their own Rainwater Catching System (RCS) when Mayor Rodrigo Duterte signs the Implementing Rules and Regulations (IRR) of the Davao City Rain Water Ordinance of 2009.
RCS will be classified according to “size and nature of catchment surface and it is also based on whether the systems are urban and rural settings” as stated in the IRR draft.
A small RCS will be required for individual residential buildings and other types of buildings with catchment surface equal to or less than 50 square meters while medium to large RCS will be for residential and commercial buildings, institutional, industrial and agricultural establishments with a catchment surface greater than 50 square meters.
Rain barrels, rain water storage tanks, catch basins, rain gardens and other similar structures can both be used as a storage system for the small, medium and large size RCS, storage capacity for small RCS will be less than 2,000 liters, 2,000 to 10,000 liters for medium RCS and more than 10,000 liters for large RCS.
RCS will also be provided for apartments, duplex or multi-storey buildings in urbanized areas and also in pervious and impervious catchment surfaces.
Rainwater harvested and stored in tanks and cisterns will be used as additional water for non-health purposes such as toilet flushing, general cleaning, gardening, laundry, car washing, fire fighting, and construction while stored water for drinking will be required secure a “certificate of potability” from the City Health Office as stated in the IRR.
In order to reduce run off and flooding in sealed ground surfaces, the owners in such areas must have rainwater drainage systems that would recycle the run off to avoid causing harm in other places.
Agricultural areas will also be required to have ground basins or structures that would catch rainwater in order to increase the holdback capacity of the water, reduce run off and soil erosion and to increase farm water supply.
The putting of RCS will also serve as a requirement in the issuance of building permit from the City Engineer’s Office.
Subsidies and tax rebates will also be granted to owners of existing agricultural, residential, industrial, institutional, and commercial buildings or plantations upon installation of the RCS if the comply with the provisions of the IRR or the ordinance.
Those who will violate the IRR of the said ordinance will be fined with 1,000 pesos but not exceeding 5,000 pesos and/or imprisonment for six months but not exceeding one year.
Furthermore, the Watershed Management Council would serve as the implementing agency upon the approval of the ordinance.(KGL)