How long hepatitis c survive on surfaces?

Hepatitis C: Dried blood spots contaminated and left on inanimate surfaces can remain infectious in ordinary room temperatures for up to six weeks. At 100 degrees, the virus retains its infectivity for up to a week.

Doesn't matter: Nobody ever catches the hepatitis C virus (HCV) by contact in the environment -- i.e. no risk from contact with infected surfaces, towels, doorknobs, or anything esle. So it doesn't matter how long the virus can survive on these things. The household contacts of people with hep C never catch it themselves if they don't share drug injection equipment or otherwise have major exposures to blood.