Narrative:

Just after takeoff (still climbing) flight attendant (flight attendant) 1 received a call from flight attendant 3 stating that there was a flood from the bathroom and that fluid and feces were filling the aft galley area. He said that it was even flowing from the coffee makers! I asked him to shut off the water valve and he said he did. Flight attendant 1 tried to wait as long as I could for safety sake before contacting the flight deck ...but did call during the sterile cockpit time as to say I would get back to them after assessing the situation. I took what blankets were available and went to the back galley. As I walked back I notice a horrid stench in the C zone! Once in the back galley I realized it was bad. I chatted with flight attendant 3 and we determined that he would spray deodorizer through the cabin discretely. That the back galley was non-functioning on all levels and that we would not serve utilizing the carts. Water was served to coach from forward galley. I chose not to make an announcement in any way to our passengers. To my knowledge no one inquired as to what was going on or the smell etc. I advised the captain that all was under control and that we could make it to ZZZ but that it was really awful.I think that the agent knew this aircraft had a bad lavatory/mechanical as she stated so once I entered the aircraft. However; the mechanics 'fixed' it by blocking off two bathrooms! It was signed off and we were 'good to go'. Sadly that was not the case!

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Original NASA ASRS Text

Title: Air carrier Flight Attendant reported a flood from the bathroom on the aircraft right after takeoff.

Narrative: Just after takeoff (still climbing) Flight Attendant (FA) 1 received a call from FA 3 stating that there was a flood from the bathroom and that fluid and feces were filling the aft galley area. He said that it was even flowing from the coffee makers! I asked him to shut off the water valve and he said he did. FA 1 tried to wait as long as I could for safety sake before contacting the flight deck ...but did call during the sterile cockpit time as to say I would get back to them after assessing the situation. I took what blankets were available and went to the back galley. As I walked back I notice a horrid stench in the C zone! Once in the back galley I realized it was bad. I chatted with FA 3 and we determined that he would spray deodorizer through the cabin discretely. That the back galley was non-functioning on all levels and that we would not serve utilizing the carts. Water was served to coach from forward galley. I chose not to make an announcement in any way to our passengers. To my knowledge no one inquired as to what was going on or the smell etc. I advised the Captain that all was under control and that we could make it to ZZZ but that it was really awful.I think that the agent knew this aircraft had a bad lavatory/mechanical as she stated so once I entered the aircraft. However; the mechanics 'fixed' it by blocking off two bathrooms! It was signed off and we were 'good to go'. Sadly that was not the case!

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.