The report titled ‘Water Sustainability Evaluation of Chennai’ was launched to mark World Setting Day
Town’s water requirement will contact 2,236.5 million litres per day (mld) by 2025, contemplating the fast enhance in inhabitants and concrete development development. This can require doubling the current water therapy vegetation’ capability of 1,294 mld to match the rising demand.
This was one of many outcomes of a report on ‘Water Sustainability Evaluation of Chennai’ launched at a digital meet to mark World Setting Day. At current, the water demand is estimated to be round 2,074 mld.
The research, which highlighted the potential water challenges within the Chennai Metropolitan Space, was carried out by the Mahindra-TERI Centre of Excellence, a joint analysis initiative of Mahindra Lifespaces and The Power and Sources Institute (TERI).
With an evaluation of assorted parameters, together with inhabitants development, adjustments in land use sample and socio-economic character, the research recognized potential dangers related to varied features.
Going by the current city development development, the report estimated that the built-up space was prone to enhance to 708.3 sq.km in 2025, from 608.3 sq.km. in 2019, changing into three-fold of what it was in 1997. Nevertheless, waterbodies would shrink to 38.4 sq.km by 2025, in opposition to 50.7 sq.km in 2019, which might be one-third of their protection in 1997.
The shrinking waterbodies and discount in catchment areas, attributable to increasing built-up space, poorly deliberate urbanisation and encroachments, would show to be potential dangers for water sustainability and end in elevated depth of floods. The unpredictable rainfall sample, owing to local weather change, might additionally usher in challenges of fluctuating water storage in reservoirs.
Equally, the amount of sewage generated was estimated to extend to 1,789.2 mld in 2025. There was a have to improve the sewage therapy vegetation’ capability to 1,878.6 mld from the prevailing 727 mld as it will in any other case result in extra air pollution of waterways, the research mentioned.
Some key suggestions of the research have been filling up knowledge gaps associated to groundwater availability, extraction and use by conducting detailed surveys; ramping up water infrastructure by the use of water metering; strengthening pipeline and therapy capabilities; and adoption of water conservation practices corresponding to rainwater harvesting and waste water reuse.
Highlighting varied measures being taken to make town extra water-secure, T. Prabhushankar, Govt Director, Chennai Metrowater Provide and Sewerage Board, mentioned the water company was conscious of the restrictions. Whereas the water sources out there might yield 900 mld, the demand was 1,200-1,300 mld. In addition to extra desalination vegetation and tertiary therapy ultra-filtration vegetation, Metrowater was additionally focussing on decentralised provide and demand administration, he added.
Sanjay Seth, senior director, TERI, and Viral Oza, chief advertising and marketing officer, Mahindra Lifespace Builders Restricted, additionally participated.