Domestic wastewater as fish food
According to report
One river dried, Agartala eyes another
Mithi in intensive care
Mumbai tries pumping oxygen into the river to keep it clean
Oilfree, naturally
Biosurfactants from bacteria help filter wastewater
Clean move
Big Ben
Bioremedy for arsenic menace
Dressed down
Uphill task?
Sewage treatment plants in Mahabaleshwar, Panchgani
Leafy solution
Foliage helps check fluorosis
Electric barrier
Water purifier that kills 98 per cent bacteria, fast