This report provides a visual summary of key chemical indicators, ammonia, phosphate, and conductivity, across all Ripple Effect monitoring sites. Each figure shows how these parameters have changed over time at each specific location, based on monthly water quality surveys.

Site codes indicate location:
FR: Forest Row stretch
HF: Hartfield stretch
GB: Groombridge stretch

Axes:
Left axis: Ammonia and phosphate concentrations (ppm)
Right axis: Conductivity (µS/cm)
X-axis: Month and year of sampling — useful for spotting seasonal patterns and long-term trends.

Healthy Water Quality Thresholds:
Ammonia: < 1 ppm
Phosphate: < 0.1 ppm
Conductivity: < 500 µS/cm (sudden changes may signal pollution)

How to Interpret the Plot

Use the plot to identify unusual spikes or drops in water quality indicators, which may suggest:

Ammonia: Toxic at high levels; often linked to agricultural runoff or industrial discharge.
Phosphate: Elevated levels may indicate sewage or nutrient pollution, potentially leading to eutrophication.
Conductivity: Natural variation is expected, but sharp increases may point to chemical contamination or salt intrusion.