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Environmental challenges in NYC are uniquely complex due to the shortage of land and open space. When the development or use of a property is complicated due to the presence or potential presence of a contamination, that property is usually referred to as a brownfield site.
The NYC Office of Environmental Remediation estimates that the city currently contains about 2,000 brownfields of various sizes. Contamination includes hazardous waste in the soil, surface water, groundwater, soil vapor, or indoor air.
NYC’s E-Designation and Voluntary Cleanup Program are the city’s primary brownfield remediation programs. These programs regulate the clean-up of properties with real or potential contamination issues and provide grant funding and technical support for developers to do so.
In OneNYC 2050, the city set a new goal of cleaning up an additional 850 brownfields by 2021.
Image credit: NYC Office of Environmental Remediation
Quality of Life
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According to a three-year rolling average of EPA’s air quality statistics portal, NYC is in 6th place as of 2018.
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In 2018, the city had achieved a 1.4 mg/m3, or 20% reduction, across city neighborhoods.
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The city has cleaned up 756 brownfields as of 2019.
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The city has cleaned up 415 brownfields in low- and moderate-income communities.
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In 2019, the city partially completed this by developing guidelines for city buildings only.
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Incomplete In 2019, 81.5% of New Yorkers were within walking distance to a park.
Incomplete 
Transportation
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Not Measurable
The city originally used the In-Season Commuter Cycling Index for this indicator, but has since stopped using it. However, according to the NYC Department of Transportation, cycling increased 55% between 2012 and 2017.
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As of July 2019, the city had 1,243 bike lane miles.
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As of March 2020, 660 EV charging stations were in operation in the city.
Not Measurable 
Waste
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Incomplete
In 2005, the city sent 3.6 million tons of waste to landfills. In 2019, 3.25 million tons were landfilled, which is equivalent to a 9.8% reduction.
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In April 2020, the city temporarily suspended organics collection due to the COVID-19 pandemic. Before the suspension, while some neighborhoods had the option to enroll in curbside collection, the programs did not serve all New Yorkers.
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A study on commercial waste zones was completed in 2016.
Energy & Buildings
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In 2019, the city generated 10.51 MW of renewable power on city buildings.