14/06/2026
"Chennai declared Day Zero in 2019 — all 4 reservoirs ran dry. In 2026, the city still faces a 713 MLD water deficit. Here's why most RWH systems are failing Chennai's groundwater — and how WISY filters fix it permanently 👇 [link]"
On 19 June 2019, something unthinkable happened in one of India’s largest cities. Chennai city officials declared that “Day Zero” had been reached, as all four main reservoirs supplying water to the city had run dry. On this day, 11.2 million people of Chennai went without any drinking water.
