Overview
In the wake of rising scarcity of water, it has become necessary to have maximum use of water. For this purpose, New Delhi Municipal Corporation has initiated a rainwater harvesting system in areas falling under its jurisdiction. Rainwater harvesting is a technique to store rainwater for various purposes. The NDMC has a plan to install RWH pits at various places, such as gardens and parks. These pits have ‘crosswave’ technology, which is an economical solution for harvesting rainwater.
When it comes to the Construction of pits for rainwater harvesting in Delhi, a small amount of cement and bricks are required. The modules of recycled Polypropylene are placed over one another in the pits before they are wrapped in Geo-textile to improve water quality. One needs to spend less time to install them. Their maintenance cost is also low. As the structure is load-bearing, the land above the tank is usable for the construction of parks and paved area parking. In addition, the high void ratio gives 95% water storage capacity. Rainwater collected from RWH pits are stored in four types of tanks, which are used for irrigation, beautification work and fountains.
How to Obtain Rainwater Harvesting Certificate?
Before you go for rainwater harvesting, you need to obtain a rainwater harvesting certificate in Delhi from Jal Board. You can apply for it online through the DJB RMS portal. The following tips will guide you in the right direction: Visit the DJB RMS portalFill all the required details which include the following:
Approved sanction plan of your building Correspondence address of the RWH system Existing and required retention capacity Details of the RWH pit Other parameters for the RWH system Filter media details Finally, click the Save Details button Once you have filled all the details, an authorized agency or Zonal Engineer will issue a Rainwater Harvesting certificate after six months. This certificate will clarify that your property has been approved for rainwater harvesting approval process.Uses of Harvested Rainwater:
Harvested rainwater is used in the same way as any other sources of water supply. If this water is to be used for cooking food, drinking or any other consumption, it will be filtered to improve its flavor and remove grit, pathogens and other particles. Last but not least, it should be boiled for at least one minute to kill disease-causing organisms.The indoor uses of harvested rainwater include the following:
• Dishwasher• Washing machine
• Toilet
• Hot tub or shower
• Utility sink
Its outdoor uses include the following:
• Swimming pools• Gardens and landscaping
• Household chores like dog or car washing
• Livestock water
• Water features like fountains or bird baths
• Emergency water or fire suppression
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