We took ownership of our 2015 Airstream in May and researched hoses carefully. No doubt there are many from which to choose and research is worth the time and effort.
I found hoses made by Water Right, Inc. in Oregon meet the criteria discussed by Protag. The lightweight, flexible hoses are made in the USA. Their customer service is top notch. We recommend hoses from Water Right without hesitation. Worthy of everyone's consideration. Our food grade hoses, a high quality filter system (upgraded the filter) and sanitization of the fresh water system all contributed to great tasting water in our Airstream.