Testing Water Quality depends on quality and use.
Choosing the appropriate water quality parameters for analyses depends on narrowing down which water tests are most appropriate for your water problem. Different types of water that have certain uses will prompt different types of questions. These questions narrow the focus and help in choosing the correct water tests.
Different types of water need different tests.
What kind of Water do you want to test? Drinking water quality has different requirements as compared to industrial water needs where quality may not be the same. Efficient water analyses is aided by knowledge of the water supply, the condition of the water quality and the way water will be used.


Fresh water and salt or ocean water can be tested fro the same parameters, but normally need water testing methodologies adapted to the media.
Wastewater and industrial water is usually pretreated to allow the water to be accurately analyzed.