When FBO's sump their Jet A fuel trucks, they are not allowed to pump the resulting test fuel into an aircraft or sell it. They have to dispose of it as per environmental regulations. However, they are allowed to let us dispose of it.

All it took for me was to show the FBO supervisor one of my turbines and tell him that that was where the fuel was going to be used and he had no problem with giving me what I needed.

Although there may be water in the fuel, it can (and should) be filtered out with a "Mr Funnel" water blocking funnel manufactured be Smart Tech. http://www.mrfunnel.com/

I now fly for a company that has 2 Lears and a King Air. The mechanics sump them every Saturday. It yields about 5 gallons of perfectly good Jet A and when I need it they are more than happy to accommodate me as it saves them the trouble of going through the disposal process.

Jet A does smell worse than kerosene but doesn't smell as bad as an empty wallet.