SUSI is constructed around 5 categories of water quality data that represent the most important pollutants and indicators of environmental health in Charlotte-Mecklenburg. The categories of data included in the index are:
Water samples that generate SUSI data are collected once per month at 24 locations throughout Charlotte-Mecklenburg. Monthly, water samples are analyzed for fecal Coliform bacteria, turbidity, dissolved oxygen, pH, temperature, total phosphorus, copper, chromium, lead, and zinc. Annually, each monitoring site is surveyed for aquatic macroinvertebrates and in-stream habitat conditions.
How we test water quality in our streams and lakes
SUSI was also designed to integrate continuous automated monitoring data for the physical parameters at each monitoring site. View continuous monitoring data.
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