View detailed trend report
Trend:
No evidence of trend

    Oligotrophic: <0.7 mg/L
    Mesotrophic: 0.7-1.5 mg/L
    Eutrophic: >1.5 mg/L

Scroll over data points to view values. See top right bar for more options.
* ‘Value too low to detect’ refers to a concentration value that is below what the laboratory can measure (the detection limit).
The value of the open circle is not the true concentration of a parameter in the water but half of the lowest concentration that the laboratory can measure.