As was the case last year, over two thirds (68%) of all assessments made during 2016-17 recorded no Category 1 hazards.
Dangosodd yr Arolwg Cyflwr Tai Cymru diweddaraf nad oedd y peryglon mwyaf difrifol (categori 1) i’w gweld mewn 82% o’r anheddau yn 2017-18, o’i gymharu â 71% yn 2008.