600 Merchants Concourse
Westbury, NY 11590

View Emissions Data

Back to our Facilities
Covanta Hempstead

Reducing Landfill Waste

Located in Westbury, New York, Covanta Hempstead is an award-winning Waste-to-Energy Facility that serves the Town of Hempstead with reliable and sustainable waste management.

In addition to keeping waste out of landfills, we’re committed to ensuring safe operations and minimizing environmental impacts. We have been consistently recognized for exceptional operations, including OSHA’s stringent Voluntary Protection Program Star certification.

We are an active community partner and support a range of initiatives such as Wreaths Across America and encouraging STEM education for local students. Recently, the facility launched an American Flag retirement program in collaboration with local veteran groups. The program retires old and worn flags in accordance with the U.S. flag code.

Fast Stats: Annual Performance

Every year, our facility processes more than 1,000,000 tons of waste that would otherwise have ended up in landfills.


Less waste in landfills reduce greenhouse gas emissions by 1,025,000 tons of CO2. That’s like taking 200,000 passenger vehicles off the road for one year.


We use waste to produce 72 megawatts of electricity 24/7 - enough to power 55,000 homes for a year.


We also recover 36,500 tons of metal for recycling annually - enough to build 28,000 cars.

Join Our Team

Learn More

Superior Environmental Performance

We care about our communities and operate well below emissions limits. Over 99.9 percent of what comes out of our plant’s stack is what you’d typically find in air - water vapor, nitrogen, oxygen, and carbon dioxide. The remaining constituents are well below federal and state standards.

The following data is presented in units required by the facility's permit as averaged emissions.

a. Permit Limits are derived from USEPA standards for Large Municipal Waste Combustors (40 CFR 60, Subparts A, Cb and Eb).
b. CO values are the maximum 4-hr block average for that day.
c. SO2 and NOx values are the daily (24-hr) block averages for that day.
d. Opacity values are the maximum 6-minute average for that day.
e.  All emission values reported in units consistent with the permit:
     CO, SO2 and NOx reported as parts per million, dry gas basis at 7% O2 (ppmdv7), Removal Efficiency and Opacity as %.
f. SO2 compliance is based on concentration (ppm) or removal efficiency (% reduction between inlet and outlet emissions).
g. The dash symbol (-) indicates that a unit is off-line, has insufficient data for a compliance period or is in an exempted period.

*Results are provided for informational purposes only. Data is posted 24 hours after completion of each day to allow for quality assurance/quality control (QA/QC) review.

Read the Continuous Emission Monitoring  System (CEMS) FAQs to learn more

For more information on facility performance click here.

Process in Action

Waste-to-Energy: How Does It Work?

Waste-to-Energy takes non-hazardous waste - otherwise destined for landfill - and combusts it to generate steam for electricity generation. Ash is processed to recover metal for recycling while all gases are collected, filtered and cleaned before being released safely into the atmosphere.

Learn More

Join Our Team

Learn More