In regards to water quality, what do these things indicate?

xo-micki asked:


basically, we have an assignment and i want to mention what each of these factors indicate regarding to quality of water:
- O.D.
- B.O.D
- Solubility
- Chloride Levels
- Solids found in water
- Titration

if u know any websites that might have this information (not wikipedia) could you please provide me with the link?

thank you!