EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Deviation / Discrepancy - Procedural Hazardous Material Violation; Flight Deck / Cabin / Aircraft Event Passenger Misconduct; Inflight Event / Encounter Weather / Turbulence
General Maintenance Action
Human Factors
After shut down and opening the main cabin door; the Flight Attendant on the flight came up saying that a passenger had told her that she needed to use the bathroom. The passenger then went into the galley; shut the galley curtain; and proceeded to use the bathroom into a coffee cup. While trying to figure out exactly what was happening and trying to figure out coordination with Ops; the passengers deplaned. Not being able to detain [the] passenger [since] the passenger left. I called Hazmat to have them dispose of the waste and scrub the galley. I also coordinated with Ops to get everything replaced in the galley. We were ground delayed 15 min in ZZZ waiting for a wheels up. I turned off the fasten belt sign and told everyone feel free to use the bathroom while on the ground. The flight was approximately 45 min with mod turbulence; so there wasn't a chance to get the fasten belt sign off. I feel like there were ample opportunities to use the bathroom before we got off the ground.
Embraer Jet Captain reported Hazmat cleaning crew required to dispose and scrub galley of human waste.