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Glycol disposal

Greg_38 Member Posts: 3
When replacing a boiler and the system needs to be drained, if it has glycol in the water, what is the proper disposal procedure?  PG seems rather non toxic, EG is toxic.  EPA lists both as toxic.  Local plumbing inspector didn't know the answer..


  • hot_rod
    hot_rod Member Posts: 22,105

    most auto supply places NAPA, O-Reillys, AutoZone, etc will take it in small quantities. Quick Lube and others will take it also. Check with your city or county recycling, they may have drop offs.

    Large quantities, like 50 gallon barrels can be taken to, or picked up by Safety Kleen, they do charge however.

    EG and PG does get mixed all that time as many cars and trucks now come with PG fluids and the auto shops don't know which they are draining and flushing.

    It all ends up at a recycling stop where they filter, RO, add new inhibitors and color and see at automotive supply shops.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream