ADA Minimum installation height: 27 inches
For a bathroom sink to be ADA compliant, it must be installed at a minimum of 27 inches above the floor. This is known as the knee clearance of an ADA compliant bathroom sink and this requirement ensures that a wheelchair can fit underneath the sink.
ADA Maximum height at the top of the sink: 34 inches
Measured from the floor to the top of the sink, the total distance cannot exceed 34 inches. Coupled with the minimum installation height, an ADA compliant bathroom sink cannot have a height of greater than 7 inches.
ADA Minimum sink depth: 17 inches
The minimum sink depth, measured from the front of the bathroom sink to the back, must be 17 inches or greater. This requirement leaves adequate space for a wheelchair to fit underneath the sink without colliding into the wall.
ADA Minimum depth for the plumbing to the front of the sink: 8 inches
This distance is measured from the the drain hole, where the trap or plumbing is connected to the sink, to the front of the sink. The minimum depth for this measurement is 8 inches, which ensures that a person in a wheelchair does not collide with the plumbing while using an ADA compliant bathroom sink.
ADA Minimum clear floor space: 30 inches by 48 inches
An ADA compliant bathroom must have a minimum of 30 inches of length and 48 inches of depth (front to back) in the surrounding area of the bathroom sink. This area is known as the clear floor space and includes the bathroom sink. For instance, if a ADA compliant bathroom sink is 24” in length by 18” in depth, a minimum space of 6” must be clear between the sink and any other sink, wall or bathroom fixture. The 6” of space can be on either side or divided between the two sides. Similarly in the example, there must be 30” of space between the front of the sink and any other bathroom sink, wall or bathroom fixture.