(19)Commission Directive 2009/90/EC of 31 July 2009 laying down, pursuant to Directive 2000/60/EC of the European Parliament and of the Council, technical specifications for chemical analysis and monitoring of water statusnote, establishes minimum performance criteria for the analytical methods used in monitoring water status. Those criteria ensure meaningful and relevant monitoring information by requiring the use of analytical methods that are sensitive enough to ensure that any exceedance of an EQS can be reliably detected and measured. Member States should be permitted to monitor in matrices or in biota taxa other than those specified by this Directive only if the analytical method used meets the minimum performance criteria set out in Article 4 of Directive 2009/90/EC for the relevant EQS and matrix or biota taxon, or performs at least as well as the method available for the EQS and matrix or biota taxon specified in this Directive.