Why Color Separation Matters
Glass is sorted by color at recycling facilities because different colors are made with different chemical compositions. Clear (flint) glass, brown (amber) glass, and green glass each melt at slightly different temperatures and have different properties. Mixing colors produces glass of lower quality, sometimes unsuitable for bottle manufacturing.
Many drop-off centers have separate bins for clear, brown, and green glass. If yours uses a single mixed bin, the glass likely goes to a lower-value use like road aggregate or fiberglass insulation rather than new bottles.
What IS Recyclable Glass
Bottles and jars of all colors: wine bottles, beer bottles, sauce jars, pickle jars, salsa jars, condiment bottles, juice bottles. These are the workhorses of glass recycling and are accepted at virtually all glass recycling programs.
What Is NOT Recyclable Glass
This surprises many people: <strong>drinking glasses, Pyrex, ceramics, mirrors, window glass, and light bulbs are NOT recyclable with container glass.</strong>
These materials contain different compounds — heat-resistant borosilicates in Pyrex, lead in some crystal, coatings on window glass. A single ceramic mug in a glass batch can cause the entire load to shatter incorrectly and ruin the manufacturing process.
Light bulbs require special disposal. CFLs contain mercury and must go to a hazardous waste facility. LEDs can often go in e-waste streams.
Preparing Glass for Drop-Off
Rinse containers to remove food residue. Remove metal lids and put them in the metal recycling stream. Corks can stay in wine bottles or go in compost. Labels don't need to be removed — they burn off during processing.
Do not break glass before dropping it off. Broken glass is harder to sort and creates safety hazards for workers.