This may be a no-brainer question, but so far I haven't figured it out. Since I winterized myself (compressed air method), I'd like to test everything out before our first trip. Problem is, I'm not...
Since the outside faucet has the same water as the kitchen sink faucet, what is the problem using it?
Now if you are worried about contamination, just check out the liquid in the bottom of the air compressor tank that was used to blow out the system. :E