The January/February/March issue of “Hydro” is online. The special coverage “Pinheiros River depollution and treatment”, on page 12, shows that the “New Pinheiros River Program, in São Paulo, is centralized on two fronts: increased collection of sewage generated in the sub-basins and treatment, when necessary and with compact technologies, in the stream itself. See on page 30 the article “Gamification of consumption in residential condominiums”, showing that individualized measurement is a reality for new residential buildings in most Brazilian cities. The gamification of consumption can bring the theme of economics to a constant and interactive agenda. Furthermore, on page 54, the article “Pumping technology for hydroenergetic efficiency”, a study that analyzes an innovation aimed at environmental preservation, energy savings and simplification of installations and in pumping systems for raw and potable water. This issue brings also the update “Valves”, “Chemical and biological products for water and wastewater treatment” buyers’ guides and “Engineering, contracting & service companies” directory.