|Who is permitted to carry out the UV system validation?
||Anyone who can prove that the validation protocol outlined in the UVDGM has been followed
||Only a DVGW certified facility
|What is the result of the validation procedure?
||A detailed report proving the UVDGM protocol has been followed
||Certification of the validated UV system
|What UV dose is required to achieve validation?
||As much as is required to inactivate a given pathogen by a specified log reduction. (see the section on UV Lamp Characteristics Comparison)
||40mj/cm2 RED. This is based on the principal that almost all common water-borne pathogens will experience at least a 4-log reduction at this dose. DVGW don't care about the pathogen or the log reduction, they believe a UV dose of 40mj/cm2 is enough to inactivate most "bugs" by 4 log, and so they only require the UV system to deliver this dose.