A 400-year-old rainwater harvesting tank was found at Amer Fort. See how its filtration design compares with modern first flush filters.

A 400-year-old rainwater harvesting tank was found at Amer Fort. See how its filtration design compares with modern first flush filters.

Chennai’s October 2026 rain caused waterlogging again. See how rainwater harvesting in Chennai holds back roof runoff and stores clean water.

Dewas in Madhya Pradesh turned water scarcity into prosperity by holding rain where it falls. Here’s how the same idea works on your rooftop with WISY filters.

Every rainwater harvesting project looks the same on inauguration day: a new filter, a fresh recharge pit, and students holding a ribbon. Two monsoons later, though, the picture usually changes. Leaf litter chokes the mesh. The first-flush diverter sits unreset. The recharge pit silts up. In short, this second and unphotographed stage is where rainwater […]