• Drainage Service Department (DSD)
  http://www.dsd.gov.hk/TC/Home/index.html
• Water Service Department (WSD)
  http://www.wsd.gov.hk/tc/home/index.html
• Building Department (BD)
  http://www.bd.gov.hk/chineseT/index.html
• Food and Environment Hygiene Department (FEHD)
  http://www.fehd.gov.hk/tc_chi/index.html
• Architectural Services Department (ASD)
  http://www.archsd.gov.hk/tc/home.aspx
• Electrical and Mechanical Services Department (EMSD)
  http://www.emsd.gov.hk/emsd/chi/welcome/index.shtml
• CLP Power Hong Kong Limited (CLP)
  https://www.clponline.com.hk/Pages/home.aspx
• HK Electric Investment (HEC)
  http://www.hkelectric.com/web/Index_zh
• Towngas (GAS)
  http://www.towngas.com/Chi/Cust/index.aspx
• Lands Department (LD)
  http://www.landsd.gov.hk/tc/about/welcome.htm