Table 2.3 matches the clustering of states done for the implementation of the National Pact for Water Management and that for water charges. The Paraiba do Sul River basin was the first pilot for water charges implementation in Brazil, which provided insight into how to fill important legislative and operational gaps. In the PCJ River basin, a Consortium of 40+ municipalities and major water users applied a water charge voluntary' scheme (cobranga voluntaria pelo uso da dgua) as a pilot experience that paved the way for the implementation of water charges in 2006. The State of Rio de Janeiro was the first state, after Ceara, to implement water charges as foreseen by the SINGREH.