This standard establishes the sampling, testing and maximum permissible limits (MPL) for key parameters related to wastewater reuse in the following classes pertaining to agriculture and landscape irrigation:

1. Class A –
2. Irrigation of crops to be eaten uncooked;
3. Landscape irrigation of all public green areas including but not limited to gardens, sport fields, golf courses and parks without access limitation; and

• Washing of enclosures for animals.

NOTE     The irrigation of crops refers to the application of treated wastewater prior to harvest.

1. Class B – Irrigation of cereal crops, industrial crops, fodder crops, pasture, trees and crops to be eaten cooked only.

NOTE: Rice is a cereal crop and sugarcane is an industrial crop.

1. Class C –
2. Localized irrigation of areas without public access; and
3. Crops in Class B if exposure of workers does not occur.

NOTE 1      Fodder crops and pasture are not included in Class C.
NOTE 2      Areas without public access include forest and areas of vegetative recuperation.

The standard does not provide the permissible limits for wastewater reuse for industrial or construction applications; cleaning roads or buildings; potable water or any other form of reuse not specified in this standard.

Status: Current | Published: 2022