How safe is Camco antifreeze

johnalavery wrote:
How safe is the water to drink from the rig's water lines after using Camco antifreeze for the winter storage,and then draining it for the summer season.
, We were full timers for 6 years and never had to store the rig so this is new for us. We are very cautious when it comes to food and drink and although Camco says that the antifreeze is safe so I am curious as to how others feel or deal with this. Thanks in advance for any responses. John in OR.

The primary ingredient in Camco's RV antifreeze is propylene glycol, listed by the EPA as GRAS, "Generally Regarded As Safe". Propylene glycol is a common food additive, as well as being used in cosmetics and medications. Ingesting more than several spoonfuls of it undiluted may cause diarrhea, but then it's also commonly prescribed for constipation and colonoscopy prep. The bottom line, with no pun intended, is the stuff is quite safe and will not cause any problems if a small amount is not flushed from the water lines.