The cost for testing for pesticides in water may exceed the cost of a point-of-use home treatment system, such as reverse osmosis for drinking water. In sampling conducted by the MDA, water from 54 private drinking water wells was sampled before and after it passed through the homeowners’ reverse osmosis system. The results indicated reverse osmosis home treatment systems removed 99.7 percent of pesticides that were evaluated, including 100 percent of the cyanazine breakdown products. The reverse osmosis systems also reduced nitrate concentrations in the water to levels below the drinking water standard of 10 mg/L. It is important to note that the systems need to be properly maintained.
If considering a treatment system, make sure the treatment unit is certified by the National Sanitation Foundation International (NSF), Underwriter’s Laboratory (UL), or Water Quality Association (WQA) to remove pesticides. View the MDH's Home Water Treatment Fact Sheet for more information about these technologies and grant and loan programs to help pay for treatment.
The cost for testing for pesticides in water may exceed the cost of a point-of-use home treatment system, such as reverse osmosis for drinking water. In sampling conducted by the MDA, water from 54 private drinking water wells was sampled before and after it passed through the homeowners’ reverse osmosis system. The results indicated reverse osmosis home treatment systems removed 99.7 percent of pesticides that were evaluated, including 100 percent of the cyanazine breakdown products. The reverse osmosis systems also reduced nitrate concentrations in the water to levels below the drinking water standard of 10 mg/L. It is important to note that the systems need to be properly maintained.
If considering a treatment system, make sure the treatment unit is certified by the National Sanitation Foundation International (NSF), Underwriter’s Laboratory (UL), or Water Quality Association (WQA) to remove pesticides. View the MDH's Home Water Treatment Fact Sheet for more information about these technologies and grant and loan programs to help pay for treatment.
In 2021, the MDA will continue to monitor for cyanazine breakdown products in groundwater and surface water through the Agricultural Chemical Monitoring and Assessment program, and private wells through the Private Well Pesticide Sampling Project.
In 2021, the MDA will continue to monitor for cyanazine breakdown products in groundwater and surface water through the Agricultural Chemical Monitoring and Assessment program, and private wells through the Private Well Pesticide Sampling Project.