Safeguarding Consumers Through Minimum Quality Standards: Milk Inspections and Urban Mortality, 1880-1910
We examine the effect of enforcing minimum quality standards (MQSs) on consumer health. In the late 1800s, the urban milk supply was regularly skimmed and diluted with water, but consumers could not easily determine its quality because dyes, caramel, and salt were added. To protect consumers, milk inspectors were tasked with enforcing a well-defined MQS. Using city-level data for the period 1880-1910, we find that milk inspections reduced mortality from waterborne and foodborne diseases by 12-19 percent. Ours is the first study to provide evidence that MQSs can improve consumer health when directly applied to an experience or credence good.
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