1. Act No 274/2001 Coll Act on Water Supply and Sewerage for Public Use and on Amendments to Certain Acts (Water Supply and Sewerage Act) In year 2001 number 274
2. Act No Act No 183/2006 Sb. on town planning and the building code (the Building Code) In year 2006 number 183
3. Directive No 91/271 / EEC of the European Parliament and of the Council on waste water treatment,1991
4. Directive No 60/2000 / EEC of the European Parliament and of the Council on a framework for Community action in the field of water policy,2000
5. 13508-2 Evaluation of condition of outside sewer network system and sewer connection Part 2: Coding system for visual inspection CEN,2012