1. Public Utilities Board, Singapore (https://www.pub.gov.sg/watersupply/fournationaltaps/newater).
2. Ng, H. Y., Seah, H., Tan, S. K., & Ong, S. L. (2007), Water reclamation and NEWater in Singapore: overcoming the challenges. Water Science and Technology, 55(12), 85-92.
3. Lee, L. Y., Elimelech, M., & Hong, S. (2011), Forward osmosis in wastewater treatment processes. Journal of Membrane Science, 375(1-2), 1-17.
4. Farahbakhsh, K., & Smith, D. W. (2006), The use of ultrafiltration for wastewater treatment and water reuse—a case study. Desalination, 188(1-3), 123-133.
5. Tan, C. S., & Ng, H. Y. (2009), NEWater in Singapore—A sustainable water supply strategy. Water Science and Technology, 59(5), 903-910.