Conclusion:My whole team feels that the best and most reliable source of water supply is the NEWater. NEWater is the most reliable to us because we felt that if NEWater comes from used water which is usually from homes.Since Singapore has so many houses,we should not have any worry on not having anymore used water for the NEWater.So my group felt that it was the most reliable.It is also potentially unlimited and is a constant supply.It also enhances national security and self sufficiency.