Harrisburg sits on the Susquehanna, and its water damage history is written in river levels. In June 1972, Hurricane Agnes brought 15 inches of rain over four days to the city. In September 2011, Tropical Storm Lee put over 7 feet of water over City Island and submerged Shipoke, and waterfront homes in Harrisburg and New Cumberland flooded to the second story. A house that has taken in river water or heavy rain needs drying started quickly: the US EPA's water-damage table gives guidelines for responding to clean water damage within 24-48 hours to prevent mould growth. When you hire, ask whether the contractor is registered with the Attorney General's Office, since Pennsylvania requires registration once a contractor's home improvement work passes a yearly threshold. Mould has no federal or Pennsylvania state regulations, so no rule sets a cleanup standard for you. Ask for a written scope that covers drying, removal and any rebuild, and check your insurance policy to see whether mould cleanup is covered.