bully wooly is right on track. cross connections occur when a fresh water line is attached to a sewer drain or vent. can occur at certain fixtures when an air gap or vacuum breaker is not present. mixing hot and cold is common and happens in most faucets , wall valves and even washing machines. therefore not a problem.
Brian G
2008-10-11 18:32:26 UTC
Cross connection means that I have seen this question 10 too many times and now I don't even care.
bully wooly
2008-10-11 20:14:50 UTC
A cross connection is present any time there is the possability of sewage or other non-potable water getting into your drinking water. Check with your plumber.
pickmefirstplz
2008-10-11 16:03:48 UTC
is it a electrical cross connection or someone crossed connected a screw?
William B
2008-10-11 16:07:30 UTC
when cold water and hot water lines are tied in to each other
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