In some embodiments, a system and/or method may include assessing surface cleanliness. In some embodiments, the system may include a dispensing device. The dispensing device may dispense, during use, a liquid on a surface forming a drop. In some embodiments, the system may include a stage. The stage may support, during use, a digital imaging device above the drop positioned on the surface. In some embodiments, the system may include a light emitter. The light emitter may emit, during use, a beam of light substantially parallel to the surface at the drop. In some embodiments, the system may include an adjustable support coupled to the stage. The adjustable support may adjust, during use, an angle of the stage relative to the surface. In some embodiments, the system is configured to determine a contact angle of the drop relative to the surface.