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Article, Refereed Journal

The impact of the

Journal of Environmental Economics and Management 56(2): 117-130.

Olmstead, Sheila

Information disclosure regulations are increasingly common, but their effects on the behavior of regulated firms are unclear. The 1996 Amendments to the Safe Drinking Water Act mandated that community drinking water suppliers issue to customers annual consumer confidence reports (CCRs), containing information on violations of drinking water regulations and on observed contaminant levels. We examine the impact of mandatory information provision on drinking water violations by 517 community water systems in the Commonwealth of Massachusetts from 1990 to 2003. Results suggest that larger utilities required to mail CCRs directly to customers reduced total violations by between 30% and 44% as a result of this policy, and reduced the more severe health violations by 40

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