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These charts display laboratory-analysed pesticide data collected from waterways in Queensland. The visualisations also incorporate remotely captured water level data to provide context for the pesticide concentrations shown.
Pesticide Concentrations: The charts depict concentrations of the specified pesticide in micrograms per litre (µg/L).
Guideline Values: The guideline values (where they exist) for three different environmental values are included in Pesticide Reporting Portal and are shown as coloured dashed lines against the left (y) axis. They include, the Australian Drinking Water (Health) Guideline, The Guideline for the protection of irrigation waters, and a guideline for the protection of aquatic ecosystem.
Aquatic ecosystems are categorised as High Ecological Value (HEV), Slightly Disturbed (SD), Moderately Disturbed (MD), or Highly Disturbed (HD). Guideline values provide concentration thresholds for protecting ≥99% of species (for HEV and SD), >95% of species (for MD), or >90% / >80% of species for (HD). The Pesticide Reporting Portal only reports against guideline values for the protection of MD aquatic ecosystems; i.e. 95% species protection guideline (PC95 guideline).
Water Level Context: The right axis shows water level data (aggregated to a 4 hourly mean) from the most reliable source available, which may be upstream or downstream of the sampling point. This helps to understand potential factors influencing pesticide movement and dilution.
Treatment of Values Below Limit of Reporting: For graphical convenience, all concentrations below the limit of reporting (i.e. <LOR) have been fixed at a value of 0.005 µg/L. Typical LOR values and their analytical error ranges are reported in Table 1 of the Understanding the Data document.
The Concentration Data are Colour-Coded:
Exceedance of Drinking Water Guideline (Health): >DWG (Health)
Exceedance of Irrigation Guideline: >Irrig
Exceedance of Protection of Moderately Disturbed (MD) Aquatic Ecosystems Guideline: >PC95
Greater than Limit of Reporting (LOR) but less than relevant guideline value: >LOR
Less than LOR: <LOR
Please note: If you're viewing several years worth of data (>3 years), individual data points may become obscured depending on your screen resolution and sampling frequency. Additionally, loading times for data will increase with larger selected timeframes.