The maximum individual concentrations of
bentazone, metolachlor and MCPA were 1769 ng L−1 (Sra. Ajuda),
291 ng L−1 (Sra. Ajuda) and 580 ng L−1 (Álamos), respectively
With respect to the maximum allowable concentrations (MAC; in inland
and other surface waters) stipulated by the Directive 2013/39/EC
(ECC, 2013) for 6 of the 25 pesticides analysed, none of them surpassed
the allowable limits (see Table 3)