I can remember buying a new potable water hose, and for a while it had the "garden hose taste". It eventually went away. Also when I put the hose up, I'll drain it, then screw the ends together to keep "stuff" out of the hose. When hooking it up at the next campground I wouldn't flush it out as I figured that it was clean when I stored up & it would still be clean. Bit me on the backside one time, hadn't used it for awhile, & hooked it up, turned on the water. Went inside & turned on the kitchen sink a little water came out then NOTHING anywhere! Come to find out somehow something was in the hose, & the screen at the inlet where the hose hooks up was completely clogged up. I replaced the screen & the problem was fixed. Now I always flush the hose BEFORE I hook it up!