Those living or looking to live rental housing in L.A. depend on the Health Department for inspections. The investigation exposed that the L.A. County Health Department has a secret system of grading rental housing inspections, but doesn't make these records available to the public. So renters are unaware of these conditions before they move in. Additionally, the investigation exposes further problems with L.A.'s housing inspection program. There are repeat health code violators, and action is rarely taken against them.