Unfit for Human Habitation damp

General Discussion

"The HHSRS system works by evaluating the potential health and safety risks of any deficiencies identified in dwellings. In order to establish the level of a hazard (defined as a Category 1 or Category 2 hazard)"

How is this evaluated as to level of damp, having tenant contract holder report issue to E. health, i have had specialist damp proof company survey to describe as  " readings taken by the use of a Protimeter survey master revealed only a small area of dampness at the point where the lower trimmer of the roof light opening is connected with the left side party wall "

Though no Actual readings have been supplied in the report, should those readings have be included and what readings are regarded as Category 1 or two Hazard  or fall out of concern coverd by legislation