Fluid Category 1 - wholesome water supplied by the water undertaker (potable, drinking)., Fluid Category 2 - water in fluid Category 1, but with aesthetic quality impaired due to a change in temperature, taste, odour or appearance, Fluid Category 3 - slight health hazard due to the concentration of substances of low toxicity., Fluid Category 4 - a significant health hazard because of the concentration of toxic substances., Fluid Category 5 - a serious health hazard because of pathogenic organisms, radioactive or very toxic substances.,

Fluid Categories

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