However, officials with the U.S. Environmental Protection Agency and the Centers for Disease Control said they did not feel the levels posed a human health threat because ingestion of floodwater should not be occurring.

Bacterial contamination consistent with the presence of sewage was also detected, and federal and state officials recommend avoiding contact with floodwater whenever possible and prompt washing if contact occurs.

Sediment tests indicated the continued presence of petroleum products at concentrations greater than health guidance values if the sediment were ingested. Responders are urged to wear proper protective equipment.

The water and sediment tests were based on samples taken between Sept. 26 and 30.