Automatic toilet flush

This is a recording of an automated toilet flushing. Since it was automated, there is no sound of a handle being pushed down. The recording was done in a public restroom in Cabell Library. The restroom was on the 2nd floor in the women's room and there were no other people or sounds in the bathroom at the time of the recording. I trimmed the recording a little in the beginning because it was silent while the motion activation was being set off. The toilet name is AquaVantage and the brand is Zurn. This sound was recorded on an iPhone 5S.