Standard Recommended Practice for
Chemical, Biological, and
Physical Analysis of Water
AASHTO Designation: R 23-99 (2008)
1.1.This recommended practice provides a listing of various parameters used in the analysis of natural waters and wastewaters.
The analysis of these waters is becoming an increasing area of concern
for environmental reasons. The passage of laws governing the usage of our natural waterways and
limiting the discharges into these waterways along with an increased public awareness has caused a much greater demand for this data.
To ensure that this data is accurate and reliable it is essential that testing be conducted using standard procedures that are known to have reproducible results.
The test methods given for the following parameters are from referenced sources that are used by most transportation departments testing water.
They are listed in order of most frequently used parameters to those parameters rarely used.
1.2.The values stated in SI units are to be regarded as the standard
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