HEET Maps

Massachusetts Gas Leaks Map
April 2022

Explore the locations of gas leaks near you and the emissions they are responsible for. Every year we create this map detailing the state of all reported gas leaks in the distribution system across the state. See if you can find the oldest leak. Read more here.

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Gas Leaks at Massachusetts School Properties
June 2022

Using utility annual reports for 2021, this new statewide analysis explores the extent to which leaks are proximate to schools. During 2021, 91 schools in Massachusetts had a reported gas leak in a gas main or service line at the school property. Thirty-one of those leaks were graded as hazardous, all of which were repaired and most within the same day. Read more here.

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Massachusetts Gas Pipe Replacement Map
April 2022

Explore the locations of upcoming pipe replacement projects – part of a $40 billion project you’ve probably never heard of. This is a first of its kind statewide map visualizing the scale and costs of this project. Read more here.

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A 2021 Leak Survey of Washington DC
June 2022

From April through June, 2021, Gas Safety Inc, Professor Nathan Phillips and HEET Director, Dominic Nicholas, collaborated on a gas leak survey of residential neighborhoods in Washington DC and identified 3,346 leaks on the gas distribution system. These results are being used by DC’s Department of Energy and Environment to help inform policy development for a strategic transition toward decarbonized heating and electrification. Read more here.