This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.
Percent of Samples Exceeded
From the help published with Drinking Water Watch 3.5, reproduced as delivered.
The percent of samples exceeded is the number of samples exceeded divided by the number of samples collected times 100.
For some types of summarized field results (also called MDBP Summaries), this value is used to determine compliance.
For the 95PT-95% Turbidity Level type of MDBP Summaries, if the percent of Samples Exceeded is greater than 5%, the Level Complied Indicator is set to No.
For DSRD - Distribution Residual Disinfectant Concentration (RDC) type of MDBP summary, if the percent of Sample Exceeded is greater than 5% in this summary and the summary for the previous monitoring period, the Level Complied Indicator is set to No.