How to characterize water ?

Here are the main water parameters :

Dissolved Oxygne rate

Biological performance indicator. It characterizes many chemical and biological process : breathing, organic matter decomposition, photosynthesis, chemicalconversion.

pH

Potential linked to to the H+ ions which indicate the acidity degree of water.

Oxydo Reduction Potential (ORP)

ORP reflected in the water oxidation or reduction character. It is directly linked to the water sepsis (bad smells).

Kjeldhal Nitrogen

Amoniacal and organic nitrogen reduced form. Kjeldhal notrogen > 6mg/L indicates a presence of H2S. 

Conductivity

It indicates the disolved salt concentration in water.

BOD5

It represents the biodegradable organic pollution.

COD

It represents the full biodegradable organic pollution and biological activity refractory.