Maine Department of Environmental Protection
PFAS in
Groundwater Samples
Site Information
Plot of PFOS and Total PFAS Concentrations in Groundwater Samples
Hover the cursor over points to see data.
When the cursor is over the plot, a toolbox will appear in the
top-right corner (zoom, pan, etc.).
Non-detects are
plotted as zeroes.
The table at the bottom of the
report shows non-detects (Qualifer=U) and reporting lmits.
Plots of PFAS with Interim Drinking Water Criteria
Maine’s interim drinking water criterion for the Sum of 6 PFAS is
20 ppt.
Sum of 6 PFAS consists of PFHpA + PFHxS + PFOA +
PFNA + PFOS + PFDA
Hover the cursor over points to see data.
When the cursor is over the plot, a toolbox will appear in the
top-right corner (zoom, pan, etc.).
Non-detects are
plotted as zeroes.
The table at the bottom of the
report shows non-detects (Qualifer=U) and reporting lmits.
Table of All PFAS Concentrations in the Groundwater Samples
Concentrations are in nanograms per liter (ng/L), which are
equivalent to parts per trillion (ppt).
Qual. = sample
qualifier (see key below), Conc. = concentration, RL = reporting
limit
Click on the column names to sort the data.
This report was created by Tom Danielson (January 2025),
with data exported from EGAD on 4/10/2025.
Qualifier Descriptions
| Code | Qualifier Description |
|---|---|
| J | ESTIMATED VALUE (E.G., BETWEEN REPORTING LIMIT AND DETECTION LIMIT, MINOR ISSUE WITH QUALITY CONTROL) |
| JB | ASSOCIATED VALUE IS AN ESTIMATE, COMPOUND IS FOUND IN THE ASSOCIATED METHOD BLANK. |
| U | NOT DETECTED ABOVE THE ASSOCIATED QUANTITATION LIMIT |