Streams are classified into 3 types:-

• Fresh water:-

  • Class AA: Drinking water after approved disinfection with additional treatment if necessary to remove naturally present impurities.

  • Class A: Drinking water is subjected to approve treatment equal to a minimum of coagulation, sedimentation, filtration and disinfection plus additional treatment to remove natural impurities if necessary.

  • Class B: Bathing or any other lesser use.

  • Class C: Fishing or any other lesser use.

  • Class D: Agricultural, industrial, cooling or any other use.

• Tidal salty water:-

  • Class SA: - Shell fishing for market purpose or any other usage.

  • Class SB: - Bathing for any other uses except shell fishing for market purpose.

  • Class SC: - Fishing and any other usage except bathing and shell fishing.

  • Class SD: -Any usage except fishing, bathing and shell fishing.

• Underground water:-

  • Class GA: - Drinking, coolinery or food processing and any other usage.

  • Class GB: - Industrial or other water supply and may other usage except described in class GA.