Water samples are collected just below the stream surface to measure water chemistry and test for algal toxins. Bacteria samples are also collected near the stream bank, where people are likely to be exposed while swimming or fishing. All samples are sent to laboratories for analysis.
How are these data used?
Water Chemistry
Human Health
Where are water samples collected?
in the stream depending
on the indicator.
To learn more, see the
NRSA Field Operations Manual.