2. The 2 concepts are that NEWater actually filters out waste water and not rain water and that NEWater has added 1 extra filtration technique so that the people in Singapore believe that NEWater is completely safe.
3. That the membrane used is reverse osmosis has pores and which are just big enough to allow the water molecules to pass through.
4. We can firstly not waste water and use only what we need, secondly we try not litter in Singapore’s water ways and lastly not pollute the water ways.