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Lots of research information on the subject of sanitation influences of spouts and drops on yield at: https://mapleresearch.org/search/?_sf_s=sanitation

By that point, just from a sanitation standpoint, you'd be down to about 50-60% of Yr 1 sap yield. It could be even less if you had serious plugging issues.

Despite the fact that most of us probably grew up drinking from garden hoses from time to time, they are not water potable due to their often being made from recycled/regrind materials. Better to go...