Data Qualifiers or Flags

The data contained in our database is flagged or qualified with the following qualifiers:

U -
indicates that the parameter was not detected in our analysis. Detection limits are available in the downloadable database
J -
indicates that the value is an estimate of the actual concentration. It usually indicates that a bacteria plate count was outside of the acceptable range
LL -
indicates the true bacterial concentration is assumed to be greater than the reported value.
R -
indicates that the value did not meet our QC criteria. The use of this value is at the discretion of the end user, but not recommended.