Which agency may regulate cremation practices in certain regions?

The Department of Health is the agency most likely to regulate cremation practices in certain regions. This regulation typically falls under the domain of public health, as cremation can have implications for health standards, sanitation, and the handling of human remains. This department's oversight ensures that cremations are conducted in a manner that is safe for both public health and the environment.

While the Environmental Protection Agency may be involved with regulations concerning emissions and environmental impacts related to cremation facilities, its primary focus is broader and not specifically centered on cremation practices. The Department of Transportation oversees matters related to transportation, which can include logistics for moving remains, but it does not specifically regulate the actual process of cremation. Hence, the Department of Health is the relevant authority with a direct role in the oversight of cremation practices.