The provisions of this article shall not be applicable to a waterworks which meets all of the following conditions:
1. The waterworks consists only of distribution and storage facilities and does not have any collection or treatment facilities;
2. The waterworks obtains all of its water from, but is not owned or operated by, a waterworks to which this article is applicable;
3. The waterworks does not sell water to any person; and
4. The waterworks is not a carrier which conveys passengers in interstate commerce.