A gravity-based, zero-energy water purifier developed by CSIR-NEERI is providing relief in flood-hit Assam’s Jorhat district, where potable water is scarce. Officials distributed 100 NEERI-ZAR units, including household and community systems, designed to supply drinking and cooking water without electricity
This civil engineer uses sand, gravel and charcoal in earthen pots to purify municipal water and says it helps retain vital minerals present in the water
