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Thinking 1.jpg

Findings > Pattern

  • How strong is the pattern of measured values being stably below water quality standards?

  • As described in baseline, for comparison with the standards, percentiles were used to represent "existing" conditions of metals and non-metals concentrations over all four seasons.

  • In the case of metals, for example, the 85th percentile of measured concentrations applied.

  • The table below shows the hypothetical concentrations that raise metals values, expressed as 85th percentiles, to the standards values. Also, see expectations for metals concentrations.

  • Results indicate, for that standards threshold, hypothetical concentrations must be at least 10 times higher than existing database values (as 85th percentiles), with only several exceptions.

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