A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.
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A winter landscape in Kewaunee County, Wisconsin
A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.
Well water advisory forecast study sample collection door hanger
Kewaunee Wisconsin well water advisory forecast study door hanger left after sample collection.
Kewaunee Wisconsin well water advisory forecast study door hanger left after sample collection.
Collecting residential tap water sample in Kewaunee County, Wisconsin
Laboratory for Infectious Disease and the Environment team member Joel Stokdyk collects residential private well water sample for the well water advisory forecast study in Kewaunee County, Wisconsin.
Laboratory for Infectious Disease and the Environment team member Joel Stokdyk collects residential private well water sample for the well water advisory forecast study in Kewaunee County, Wisconsin.
LIDE team members in front of field vehicle when traveling to collect private well water samples
linkJoel Stokdyk (USGS) and Rachel Cook (USDA) from the USGS Laboratory for Infectious Disease and the Environment (LIDE) standing in front of field vehicle en route to collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin.
LIDE team members in front of field vehicle when traveling to collect private well water samples
linkJoel Stokdyk (USGS) and Rachel Cook (USDA) from the USGS Laboratory for Infectious Disease and the Environment (LIDE) standing in front of field vehicle en route to collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin.
LIDE team members collecting private water well samples in Kewaunee County, Wisconsin
Team members from the USGS Laboratory for Infectious Disease and the Environment (LIDE) collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin. Pictured from left to right Joel Stokdyk (USGS), Rachel Cook (USDA), Aaron Firnstahl (USGS).
Team members from the USGS Laboratory for Infectious Disease and the Environment (LIDE) collecting private well water samples on a chilly November day in Kewaunee County, Wisconsin. Pictured from left to right Joel Stokdyk (USGS), Rachel Cook (USDA), Aaron Firnstahl (USGS).
Joel Stokdyk collecting homeowner water sample
USGS scientist Joel Stokdyk collects a homeowner water sample in April 2019.
USGS scientist Joel Stokdyk collects a homeowner water sample in April 2019.
Laboratory for Infectious Diseases and the Environment (LIDE)
Photo of Laboratory for Infectious Diseases and the Environment (LIDE).
Photo of Laboratory for Infectious Diseases and the Environment (LIDE).
Fluorescence amplification curves from a qPCR analysis
Example fluorescence amplification curves from a quantitative polymerase chain reaction (qPCR) analysis. By reviewing the fluorescence amplification curves, the concentration of the pathogen in the original sample can be back-calculated from the amount and number of cycles needed to reach the target concentration.
Example fluorescence amplification curves from a quantitative polymerase chain reaction (qPCR) analysis. By reviewing the fluorescence amplification curves, the concentration of the pathogen in the original sample can be back-calculated from the amount and number of cycles needed to reach the target concentration.
Preparing a sample for qPCR analysis
Joel Stokdyk, LIDE Biologist, prepares a sample for quantitative polymerase chain reaction (qPCR) analysis. qPCR uses fluorescence to quantify the detection of nucleic acids from a targeted pathogen.
Joel Stokdyk, LIDE Biologist, prepares a sample for quantitative polymerase chain reaction (qPCR) analysis. qPCR uses fluorescence to quantify the detection of nucleic acids from a targeted pathogen.