As life returned to normal, the business flourished. Monier's reputation spread mainly by word of mouth. He built a large number of reservoir tanks in this period. Although many were small, a tank at Bougival (1872) with a domical roof had a volume of 130 cubic metres. Two tanks of 1000 cubic metres each were built at what is now Bruyères à Sèvres. The two-storey reservoir at Pessac has a 10 cubic metre tank perched above a 20 cubic metre tank, the supporting columns being in the form of tree trunks.