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Are there enforceable standards or thresholds for salinity and sodicity of water used for irrigation?

April 26, 2017Enforceable irrigation salinity sodicity Standards thresholds Used water

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Are there enforceable standards or thresholds for salinity and sodicity of water used for irrigation?

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There are no Federal standards for irrigation water quality enforceable by law. Even in the case of surface water bodies designated for irrigation use under the Clean Water Act, there are no enforceable numerical salinity standards. There is only a recommended threshold of EC and SAR for irrigation water suitability. In some cases, enforceable standards are being developed as part of the Total Maximum Daily Load (TMDL) process under the Clean Water Act or because some other condition necessitates standards.