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How MassDEP Calculates Municipal Residential Recycling Rates

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October 2009

Background

Each year, the Massachusetts Department of Environmental Protection (MassDEP) asks municipalities to complete a Municipal Recycling Data Sheet that provides solid waste, recycling, composting, and hazardous product collection information. MassDEP uses the information provided on the Data Sheets to calculate municipal and statewide diversion and recycling rates, evaluate municipal recycling grant applications, and evaluate state recycling and waste reduction progress.  Municipalities must complete a data sheet to be eligible for MassDEP recycling grants. 

Below is a brief explanation of how MassDEP calculates municipal recycling rates and what is counted and not counted in these rates.  A historical listing of municipal recycling rates, a spreadsheet summarizing the major components of each municipality's rate for the most recent year, and a spreadsheet summarizing the major characteristics of each municipality's solid waste and recycling program is posted along with this explanation at http://www.mass.gov/dep/recycle/priorities/dswmpu01.htm#recycling.

Residential Recycling Rate

EQUALS  

Residential Tons Diverted (recycled + composted + hazardous products collected)

DIVIDED BY  

Residential Tons Generated (diverted + disposed)


Tons Generated

EQUALS

Tons Disposed 

PLUS

Tons Diverted

  • Generation is based on actual data reported by cities and towns.
  • If a municipality does not report tons disposed, MassDEP estimates the tons generated by multiplying the municipality's population by a statewide average per-capita residential generation rate. 


Tons Disposed - Data Sheet Sections 2 & 3

Includes:

  • All reported residential disposal
  • Bulky waste disposal 
  • Tons disposed by residents served by private subscription haulers.  If this tonnage is not reported, MassDEP calculates it based on a statewide average of tons disposed per household.  The statewide average of tons disposed per household is multiplied by the number of households served by private subscription haulers.  
  • If a municipality does not have disposal tonnage data, MassDEP calculates it by subtracting the tons diverted from the estimated tons generated.  (See the Tons Generated section above.)

Does not Include:

  • Disposal tonnage from businesses or construction and demolition debris disposal


Tons Diverted - Data Sheet Sections 6, 7 & 8

EQUALS

Tons Recycled

PLUS

Tons Composted

PLUS

Tons of Hazardous Household Products/Difficult to Manage Waste Collected


Tons Recycled - Data Sheet Section 6

 
Includes:

  • All residential recycling of paper, containers, textiles, scrap metal and white goods, textiles and swap shop diversion
  • Residential recycling from residents served by private subscription haulers
  • If a municipality does not have tonnage data for private subscription hauler recycling, but can demonstrate that private haulers are providing residential recycling services, then MassDEP assigns recycling tonnage credit on a per household basis

 Does Not Include:

  • Recycling tonnage from businesses


Tons Composted - Data Sheet Section 7

Includes:

  • Tonnage reported for leaves and yard waste, Christmas trees, food waste and tonnage credit per home compost bin distributed (typically based on volume to weight conversions)
  • When the municipality does not collect and report composting tonnage, but does confirm that it has specific composting initiatives in place, MassDEP calculates per capita default composting tonnage in lieu of actual reported tonnage

Does Not Include:

  • Compost tonnage from commercial sources

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