Rain Water Harvesting
Rain is the only source of fresh water. Become a zero rain water outflow community and become water secure.
Why Rain Water Harvesting?
Most cities need not be water deficient, if only they adopt Rain Water harvesting at a large scale. Another case in point is Bengaluru. The city gets far more rains than its water requirements. If Bengaluru becomes Zero Rainfall Outflow city, it can be 100% self sufficient with respect to water.