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The Waterbase – Water Quality database on pesticide concentrations in the different European countries differ widely in terms of numbers of substances reported but also monitored stations. Different LOQs also hint towards the use of different chemical analytical techniques. Hence, to improve comparability, harmonisation with regard to monitored substances, density of monitoring stations and methodology is warranted. More streamlining of approaches towards data collection and monitoring, (such as the application of common analytical quality rules, such as those under the WFD (EC, 2009) would improve comparability. Focusing effort at relevant times, e.g. monitoring only before, at and after the pesticide application season, rather than continuously, could facilitate effective use of scarce resources.
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could facilitate effective use of scarce resources.
suggest to change to
could facilitate the more effective use of scarce resources.
We support the effort to increase comparability and quality of monitoring data. With respect to monitoring stations this means that site selection should focus on, for example, representativeness and not on number of stations.
Last sentence: it is a simplification to save resources that will result in undue bias of results. This contradicts the monitoring principles recommended in other legislation.
Resources can be better saved by looking into the appropriate set of substances.