Borosilicate glass can be recycled endlessly without quality loss or contamination. However, it is not recommended that you recycle our glass water bottles curbside with your local hauler as they may not have the necessary equipment to heat and recycle borosilicate glass which melts at a much higher temperature than standard soda-lime glass. Contact your local recycling center to confirm acceptance of borosilicate glass. A good resource for recycling solutions can be found at Earth 911.