References

  1. Japan Sewage Works Association, Sewerage Statistics for 2003, 2004.
  2. Ministry of Land, Infrastructure and Transport, City and Regional Development Bureau HP, Preparation of a manual of water quality standards for treated wastewater for reuse, 2005.
  3. J.H.J.M. van der Graaf, Treatment matrix for reuse of upgraded wastewater,Water Supply, 5(1) (2005) 87–94.
  4. Ministry of Land, Infrastructure and Transport, City and Regional Development Bureau HP, Population coverage by conventional and advanced wastewater treatment, 2005.