Good morning, To consult data in Spain, you can visit the following addresses:

http://www.ategrus.org/

http://residus.gencat.cat/es/

http://www.mapama.gob.es/es/calidad-y-evaluacion-ambiental/temas/prevencion-y-gestion-residuos/

Bets

José María Fdez

Mark Yuschak....here is the link to New York City Department of Sanitation website. 

http://www1.nyc.gov/assets/dsny/zerowaste/residents/food-scraps-and-yard-waste.shtml.

I'm sure if you navigate around the site or contact them you'll find the answers.

Mark..have some idea here too.

http://siteresources.worldbank.org/INTURBANDEVELOPMENT/Resources/336387-1334852610766/Chap5.pdf

In Brazil, the Ministry of Cities carries out an annual survey, with almost 10 years of data, of waste generated in the municipalities. These data are in the historical series of the National Information System for Sanitation (SNIS) - Solid Waste, which can be consulted at Page of the Ministry of Cities.

Surender...thanks and your lead to the following

https://www.usda.gov/media/press-releases/2015/09/16/usda-and-epa-join-private-sector-charitable-organizations-set

https://ourwastematters.com/category/landfills/

David Bonser - is using Sydney (Aust) organic waste to produce compost for farmers. He tests the resulting compost of the chemical, microbiological composition.

www.amags.com.au

The City of Surrey, Province of British Columbia, Canada published our 2012-2013 reports on organic waste composition here: 

https://www.surrey.ca/files/Final_Organics_Composition_Report.pdf

https://www.surrey.ca/files/December_2012_Organics_Composition_Report.pdf

I don't know if you are interested in this informations in the developing countries, but I guess this will help you