MRF Glass Used as Alternative Daily Cover

July 12, 2023

The Northeast Recycling Council (NERC) has released a report that reveals data about post-consumer recycled glass containers being used at landfills in the Northeast states (Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island and Vermont) and Quebec. NERC’s Glass Committee compiled the Recycled Glass Used as Alternative Daily Cover in the Northeast US & Quebec Report to get a better understanding of the volume of recycled glass containers coming out of Material Recycling Facilities (MRFs) that never reach manufacturers for making new products, but are instead used as Alternative Daily Cover (ADC)—cover material placed on the surface of the active face of a municipal solid waste landfill at the end of each operating day.

“The Report provides great insight into MRF glass that is not reaching manufacturers for making new products and is instead being used at landfills—the lowest value end use with the least environmental benefits,” said Mary Ann Remolador, Assistant Director of NERC and Glass Committee staff lead.

One of the key findings is that 75% of the states/province reported that post-consumer glass collected for recycling is being used as ADC. These states include Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island and Quebec. The glass being used for ADC includes crushed recycled glass that is broken into pieces too small for manufacturers to use in their processing, non-bottle bill glass, and glass meeting the state’s specifications for ADC. The states not using glass for ADC are Delaware, Maryland, and Vermont. 

One of the contributing factors for glass being used as ADC is the poor quality of glass coming from MRFs. It is oftentimes considered too dirty or contaminated for use in manufacturing. The contamination is due to the glass being mixed with other recyclables at the MRFs. In addition, many Northeast US MRFs aren’t equipped with the necessary systems for removing glass at the beginning of the sorting line. This contamination adds weight to the glass, which makes the cost of shipping long distances impractical.   

The Northeast US also lacks enough beneficiation facilities that accept MRF glass to serve the entire region. Beneficiators clean and process glass, making it into a feedstock for manufacturers. Without these facilities, the region’s contaminated MRF glass has no viable market within a practical shipping range. As a result, many MRFs are sending their separated glass to landfills for ADC.

Another key finding from the report is that only 58% of the states/province have data about the tonnage of MRF glass used as ADC. These include Delaware, Maryland, Massachusetts, New York, Rhode Island, Vermont, and Quebec. 

Additionally, 76% do not recognize post-consumer glass used for ADC as recycling (Connecticut, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Quebec), and 83% require post-consumer glass to be recycled. Maryland and New Hampshire do not require it.   Also, Massachusetts, Pennsylvania and Vermont (25%) are the only states/province that have post-consumer glass disposal bans.

The report also shows that transparency with the public about what happens with post-consumer glass could be improved in most states. While some states take a proactive approach to ensuring end uses for recycled material are publicly available, others do not readily share this information. 

After a thorough analysis of the compiled information, NERC and its Glass Committee drew the following conclusions:

  • Until more investment is made in the glass recycling infrastructure, MRF glass will continue be used as ADC.
  • Without having consistent outgoing materials reporting requirements for MRFs, it’s impossible to generate data about the total tonnage of recycled glass diverted for use as ADC in the Northeast region.
  • More beneficiation facilities capable of cleaning MRF glass are needed throughout the region to make the glass economical for use as a manufacturing feedstock.

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By Chris Voloschuk | Recycling Today July 3, 2026
The Northeast Recycling Council (NERC), Brattleboro, Vermont, recently released its “ Northeast Flow of Glass Report ,” a regional analysis looking at glass container generation, collection, recycling, disposal, policies and end markets across the 11 states in the 11 Northeast states. The report was developed by NERC’s Glass Committee with support from state agencies, industry partners and stakeholders across the region and builds on the organization’s previous research into glass recovery, processing and end markets. NERC says it is meant to provide a comprehensive snapshot of how glass moves through the Northeast materials management system and highlights opportunities to strengthen glass recycling through policy, infrastructure investment and market development. According to NERC , key findings in the report include: Vermont (79.9 percent) and Connecticut (77 percent)—two states that operate deposit return systems (DRS)—recycled the highest share of glass containers relative to total glass container scrap generated. Connecticut led the region in per capita glass collection at 65.8 pounds per resident. New York collected the greatest total tonnage of glass containers for recycling at 281,065 tons annually, followed by New Jersey with approximately 197,000 tons. Five states in the region operate DRS programs that include glass beverage containers. All Northeast states provide residents with access to curbside and/or drop-off recycling programs. Reporting methodologies vary significantly among states, affecting direct comparisons of recycling performance. Recycled glass supports multiple end markets, including new containers, fiberglass, concrete applications and aggregate products. “Glass is one of the few packaging materials that can be recycled repeatedly with minimal loss of quality,” says NERC Executive Director Megan Schulz-Fontes. “The data show that strong collection systems and supportive policies can significantly increase glass recovery and create valuable feedstock for manufacturers.” NERC says its findings demonstrate that opportunities exist across the region to increase glass recovery through improved collection systems, stronger processing infrastructure and continued end market development. It also claims its analysis reveals “substantial variation” in state reporting methodologies, recycling requirements and collection systems. Per the report, while all Northeast states provide residents with access to curbside and/or drop-off programs, collection models differ considerably. Five states operate DRS programs, several off source-separated glass drop-off programs and Pennsylvania is the only state identified as providing source-separated curbside glass collection in select communities. NERC says these differences present challenges when comparing data across states and highlight the need for continued efforts to improve reporting consistency and transparency. The report notes that recycled glass serves a growing number of end markets, including new glass containers, fiberglass insulation, pozzolan for concrete, foam glass aggregate and other construction applications. “Many of these markets require high-quality glass cullet with low contamination levels, making effective collection and processing systems essential,” NERC writes. Although glass is heavier than many alternative packaging materials and can be more transportation-intensive when moved long distances, NERC reports that increasing local and regional collection, cleaning and processing capacity can improve environmental outcomes. The organization says recycled glass can help reduce greenhouse gas (GHG) emissions associated with manufacturing by replacing virgin materials and supporting a more circular economy. NERC says its findings suggest that strategic investments in collection systems, processing infrastructure and end market development could increase glass recovery rates throughout the Northeast while supporting resource conservation, economic development and reductions in GHG emissions. Read on Recycling Today .
By Waste Advantage July 2, 2026
The Northeast Recycling Council (NERC) has released the Northeast Flow of Glass Report, a regional analysis examining glass container generation, collection, recycling, disposal, policies, and end markets across the eleven Northeast states. Building on NERC’s previous research into glass recovery, processing, and end markets, the report provides a comprehensive snapshot of how glass moves through the Northeast materials management system and identifies opportunities to strengthen glass recycling through policy, infrastructure investment, and market development. Key Findings from the Northeast Flow of Glass Report Vermont (79.9%) and Connecticut (77.0%) recycled the highest share of glass containers relative to total glass container waste generated. Connecticut led the region in per capita glass collection at 65.8 pounds per resident. New York collected the greatest total tonnage of glass containers for recycling at 281,065 tons annually. Five Northeast states operate deposit return systems that include glass beverage containers. All Northeast states provide residents access to curbside and/or drop-off recycling programs. Reporting methodologies vary significantly among states, affecting direct comparisons of recycling performance. Recycled glass supports multiple end markets, including new containers, fiberglass, concrete applications, and aggregate products. “Glass is one of the few packaging materials that can be recycled repeatedly with minimal loss of quality,” said Megan Schulz-Fontes, Executive Director of NERC. “The data show that strong collection systems and supportive policies can significantly increase glass recovery and create valuable feedstock for manufacturers.” Among the report’s key findings, Vermont and Connecticut achieved the highest rates of glass container recovery relative to total glass container waste generated, recycling an estimated 79.9% and 77.0%, respectively. Both states operate deposit return systems that include glass beverage containers and ranked among the region’s leaders in per capita glass collection. “Glass bottles and jars have been banned from the trash in Vermont since 2015 and we have had a Bottle Bill since the 1970s,” said Matt Chapman, Director, Vermont DEC Waste Management and Prevention Division. “We’re glad to see that our glass container recovery rate reflects Vermonters’ commitment to recycling.” The report found that New York collected the largest total tonnage of glass containers for recycling at more than 281,000 tons annually, followed by New Jersey at approximately 197,000 tons. The findings demonstrate that opportunities exist across the region to increase glass recovery through improved collection systems, stronger processing infrastructure, and continued end-market development. The analysis also revealed substantial variation in state reporting methodologies, recycling requirements, and collection systems. While all Northeast states provide residents with access to curbside and/or drop-off recycling programs, collection models differ considerably. Five states operate deposit return systems, several offer source-separated glass drop-off programs, and Pennsylvania is the only state identified as providing source-separated curbside glass collection in select communities. These differences present challenges when comparing data across states and highlight the need for continued efforts to improve reporting consistency and transparency. The report notes that recycled glass serves a growing number of end markets, including new glass containers, fiberglass insulation, pozzolan for concrete, foam glass aggregate, and other construction applications. Many of these markets require high-quality glass cullet with low contamination levels, making effective collection and processing systems essential. Although glass is heavier than many alternative packaging materials and can be more transportation-intensive when moved long distances, increasing local and regional collection, cleaning, and processing capacity can improve environmental outcomes. Recycled glass can help reduce greenhouse gas emissions associated with manufacturing by replacing virgin raw materials and supporting a more circular economy. The findings suggest that strategic investments in collection systems, processing infrastructure, and end-market development could increase glass recovery rates throughout the Northeast while supporting resource conservation, economic development, and reductions in greenhouse gas emissions. The Northeast Flow of Glass Report was developed by NERC’s Glass Committee with support from state agencies, industry partners, and stakeholders across the region. The report examines consumer glass containers, including food and beverage bottles and jars, as well as non-food glass containers. Read on Waste Advantage.
By Megan Fontes June 30, 2026
New report identifies leading state programs and opportunities to strengthen glass collection, recycling, and end-market development across the Northeast.