Decree No. 649 of 1997 relative to the discharge of liquid substances into the soil.
The text consists of 37 sections divided into 5 Chapters: general provisions (I); Limited discharge of household water into the soil (II); Extensive discharge of household water into the soil (III); Cooling water and other liquid substances (IV); Further provisions (V).; Article 2 defines the application sphere of this Decree. Articles of Chapter II concern installation of infiltration and purifying systems.