While the next president, AlejandroToledo, was in power, the Décimo Novena Política del Acuerdo Nacional
2002 (National Agreement of the Tenth Ninth Policy) was made. As a national agreement, its goals were to promote
the basins management; stimulate the environmental investment and the technology transfer to generate cleaner and
more competitive actions for the drains; and promote and constantly evaluate the efficient use of water avoiding the
negative externalities [17]. In comparison with other national laws, this was more detailed, especially because it
directly referred to basins management and the negative externalities as a consequence of an inefficient use of water.
Nevertheless, new laws have been made to improve older ones and the populations wholive downstream from metal
mines continues to show their disagreement with their municipalities’ and nationaldecisions [18]. According to the
local people policies give preferential treatment to mines, forgetting the people’s rights for a healthy living condition
and forgetting the rights for the farmers who need a large amount of fresh water for their land and animals.