In our food manufacturing facility, we use potable water hoses for cleaning. We've never had an issue before, but now we are starting to see higher (>1,000 cfu/g) APC counts in our water hoses continuously. Coliform is always <1. We've tested the source and it is always clean so we know it's not coming from there. In the past, if we had an issue with one of our hoses, we would replace it. Now the question has come up if we can clean the inside of the water hose or not. I've never heard of this being done but I'm still pretty fresh in the food manufacturing industry. I'm not even quite sure how this would be done.
Any thoughts?