Originally Posted by Ford Idaho
I would not use the same hose for that.
I carry a second hose to keep cross contamination to a minimum along with a bottle of bleach.
I don't use the sanitary hose anywhere near the sewer for flushing or cleaning the sewer hose. But, you use city water to flush it, that was my point. I also don't like to use the hose provided at the dump stations and always wear gloves while there.
I also do not have a grey tank valve open at the same time as the black tank drain valve is open.