Hello, At our business the water company had to replace part of a 8″ water main outside our building, as it was leaking underground.
Since then, anytime any water is used anywhere in the building, there starts a rapid whooshing sound that slows down to about one whoosh per second. This is audible throughout the building. The water company said there was air in the lines, but offered no advice. Is this a job for a plumber or the water company?