To limit the probability that urine, human waste or contaminated water will accumulate on or be absorbed by floor surface materials near water closets, which could lead to unsanitary conditions, which could lead to harm to persons.
To limit the probability that floor surface materials near water closets will not be conducive to cleaning and the removal of urine, human waste or contaminated water, which could lead to the accumulation or absorption of urine, human waste or contaminated water on the materials, which could lead to unsanitary conditions, which could lead to harm to persons.