I still do that at least once a month, But just a few gallons on the kitchen floor.
Happens to me everytime I make RO water for making sweet tea! Fortunately I don't live above anyone. It's funny I have yet to make a mess on the floor on account of this reef tank, I've run it a year now without so much as spilling a gallon from the tank, making sweet tea... well that's a whole other story! (For those that don't know, if you use your RO water to make sweet tea, it makes the best tasting sweet tea in the world!