Underground Water Quality Indicators: Detection of Pesticides in Waters (2021)

The presence of pesticide substances in waters is due to the use of plant protection products in agriculture. Some of these substances are taken into account in the chemical status assessment and are regulated in the RDSE, while others are not yet regulated, and could pose a risk as potential pollutants. This analysis considered all pesticide substances extracted from the Monitoring Programmes (monitoring and operational control programme) intended to assess the status, in compliance with state and European regulations, for which information is available in NABIA (Water Status and Quality Information System). For this indicator, the following exchange values have been defined: — The value of 0.1 µg/L established in Royal Decree 1514/2009 regulating the protection of groundwater against pollution and deterioration was considered. The evaluation of the station is marked by the maximum available value of any of the pesticides evaluated.