Citizens former Manufactured
Gas Plant Site

Gas used for cooking, lighting, heating and commercial purposes was manufactured at the Citizens Manufactured Gas Plant from the 1860’s to the early 1960’s. The plant was built by the Citizens Gas Company, and sold to Brooklyn Union, a predecessor of National Grid, in 1895. It used coal and petroleum products to create a flammable gas which was piped to users in the surrounding neighborhoods. The production and storage facilities were decommissioned and demolished in the early 1960’s, and Brooklyn Union sold the site in 1969, after which it had no control of anything that happened on the property. The by-products of gas production and storage that resulted from site operations will be addressed through a Remedial Plan being implemented by National Grid with oversight of the New York State Department of Environmental Conservation (NYSDEC).  Most of the site is owned by the City of New York, with the balance owned by private companies. National Grid is responsible for the investigation and remediation of the site because it was operated by a predecessor company at the time the contamination occurred. 

This website provides information on the Citizens former MGP Site, the remediation projects and opportunities for public participation. National Grid is committed to the protection and enhancement of the environment, always seeking ways to minimize the environmental impacts of our past, present and future activities. We hope this website, a part of our public participation and outreach efforts, is helpful and informative. If you need additional information or have suggestions to make our website better, please contact the individuals listed under Contact.



March 2023

National Grid and its contractors completed the installation of additional soil borings and monitoring wells in the off-site area near the former Citizens Gas Works manufactured gas plant (MGP) site. The investigation included the installation of several new groundwater monitoring wells in public street rights-of-way to support the long-term groundwater monitoring program.

Additional information on the program is provided in the NYSDEC-approved Supplemental Off-Site Investigation Work Plan (Work Plan), which has been posted under the “Key Documents” section of the project website (

National Grid will continue to keep the community informed about planned activities at the former Citizens Gas Works MGP site and we appreciate your continued cooperation.

Contact Information

National Grid will provide updates as the work at the site proceeds.  For more information, please leave a message on our hotline at (718) 982-7349, email us at

Website Update Information

National Grid will provide an activity update for neighbors of the former Citizens MGP site with developments related to the investigation and remediation of the Site. During the remedial construction phase, National Grid provides a bi-weekly update on activities related to the remediation of the Site. The updates describe the work being done on and near the Site, and provide a forecast for upcoming work, including information about work that may affect normal community activities. All updates will be archived under the Key Documents tab of this website.