Sulfate Water Quality Standard- Wild Rice Relationship

The water quality standard for sulfate (SO4) has a direct connection to wild rice in Minnesota. Based on some Statewide assessments of the occurrence of wild rice across the State, it was determined that wild rice did not occur in waters with sulfate concentrations greater than 10 mg/L. Based on this relationship, the MPCA has established a water quality criteria for sulfate as 10 mg/L; this standard applies only to waters of the State used for production of wild rice and only during periods when the rice may be susceptible to damage by high sulfate levels.(7050.0224 SPECIFIC WATER QUALITY STANDARDS FOR CLASS 4 WATERS OF THE STATE; AGRICULTURE AND WILDLIFE).


Caltha provides specialized expertise on water quality standards, and the potential impact of sulfate on wild rice. For more information on Caltha's Water Quality - Water Standards Services

For further information, contact Caltha LLP at:
Email: info@calthacompany.com
Phone: (763) 208-6430
Website: http://www.calthacompany.com/
Two Minnesota offices - Minneapolis and Pine River