Does the water appear to be colored?
Is the water clear or transparent, meaning can you see through it?
Can you see a rainbow effect or a sheen on the water surface?
Does the sample have an odor?
Is there something floating on the surface of the water?
Is there something suspended in the water column or sample?
Is there something settled at the bottom of the sample?
Is there foam or material forming on top of the water?
Are there any concerns, corrective actions taken, and any other obvious indicators of pollution present in the sample? If so, describe.