NA 119
DIN Standards Committee Water Practice
Standards
[Withdrawn]
DIN 1988-4
DIN 1988-4
Drinking water supply systems; drinking water protection and drinking water quality control (DVGW code of practice)
Title (German)
Technische Regeln für Trinkwasser-Installationen (TRWI); Schutz des Trinkwassers, Erhaltung der Trinkwassergüte; Technische Regel des DVGW