Pinkish-orange algae in water lines

Because yeasts are found everywhere a yeast is most definitely present in this issue and likely playing a role. Be careful if you're introducing a acidic , as vinegar is, into the environment as yeasts do very well when vinegar is present . Your problem is more likely a bloom that arrived in your water supply as stated earlier Most often not a pathogen but a issue that your supplier is aware of and hoping it goes away soon as all water districts that are faced with this issue do. The bloom problem is far more common in your water when flow is diminished , like a camper that sits idle for a period of time.

In many cases you can leave home with perfectly good water, do a hook up 100 miles down the road and receive water from a different source/water district and have a bloom problem . It's more common than most people know.