carpet looks clean but see what the water looks like!

We were cleaning a home for a new client. She just closed on the home and wanted the carpets cleaned. We inspected the carpets and they looked clean. The video shows carpet we havent cleaned yet. The toilet water was from a different room we had already cleaned but didn't look dirty either.
If you have not cleaned your carpeting in a few years and you don not think they are bad, just look at what we got out of this carpet.