Weights and Measures

The mission of the Napa County Department of Weights and Measures is to provide fair competition and equity in the marketplace and to ensure that the interests of the buyer and seller are protected through educational, inspection and enforcement programs. 
    Under the authority of the Secretary of the California Department of Food and Agriculture (CDFA), each County has an appointed Sealer who is responsible for the enforcement of California Weights and Measures laws and regulations. In Napa County, this function is administered by the Agricultural Commissioner/Sealer’s Office. The Napa County Department of Weights and Measures is divided into several programs to 

• ensure the accuracy of commercial weighing and measuring devices
• verify the price, quantity and labeling of packaged and bulk commodities
• verify quality, advertising and labeling standards for various petroleum products
• enforce Weighmaster laws to assure accuracy of information on Weighmaster certificates.

Quantity Control of Packaged Goods
Weighing and Measuring Device Registration
Weights and Measures informational brochure (.pdf)