Who says fresh water can be used only once?
Bangalore uses around 180 Cr litres of fresh water every day. Mumbai demands 300 crore litres. Delhi guzzles 350 crore litres a day.... You pay Rs 1000 to Rs 3000 to a tanker of water.
Treat all waste water with STP with tertiary treatment systems
Then treat all STP output water to Health Grade
Save on ground water pumping and transportation costs
Decrease usage of ground water from aquifers
Healthier ground water systems
Greater water security and healthy water access