Source: National Milk Producers Federation
The most recent national government survey looking for pesticide residues in foods found virtually no positive levels in milk, and none that exceeded government tolerance levels.
The U.S. Department of Agriculture (USDA) conducts an annual Pesticide Data Program annual survey to test various food commodities for pesticide residues. Each year, USDA and the Environmental Protection Agency jointly determine which commodities to test. In 2011, the USDA collected 743 whole milk samples in ten of the largest states, mostly at the retail level.
Overall, only five of the milk samples showed any presence of pesticide residue, and all were lower than Environmental Protection Agency-established tolerances for those compounds.