In 1786, after the success of the first pumps, two new engines, Louise and Thérèse, were added along the quai d'Orsay and the Gros Caillou, which, beginning in 1788, pumped water to a 35 meters tower, which flowed down through pipes to the neighborhoods of les Invalides, Ecole Militaire, and the faubourg Saint-Germain.