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Converting to natural gas is easy and economical!

NPU has a comprehensive program that combines financial incentives with discounts on conversion costs to make the decision to switch to natural gas the logical choice. For detailed program information, call 860-823-4514, email or click here.

Customer-owned Underground Gas Lines

Some of the underground natural gas piping on personal property belongs to the property owner. Customer-owned piping is defined as any buried gas line that extend away from the gas meter. Typically, customer-owned gas piping is used to supply heat and hot water to another structure, like a detached garage, but it can also be used to heat swimming pools and for cooking on a gas grill. If you have this type of gas line on your property, it is your responsibility to initiate any inspection and necessary repair or replacement of customer-owned gas piping through a qualified professional, such as a licensed heating/cooling contractor or plumber. Buried gas piping should be inspected periodically for leaks and for corrosion if the pipe is metal. If a gas leak is detected, it may be necessary to interrupt your gas service temporarily until repairs are made.

Remember to contact Call Before You Dig (by dialing 811), a free service. It is important that you know the exact location of all buried utility lines before performing any excavation project. When excavating near buried gas piping, all excavations must be done by hand.

If you suspect a problem with any natural gas lines, call NPU’s gas emergency line at 860-887-7207.

Excess Flow Valve Customer Notification

Federal regulations require that all natural gas utilities notify customers about the availability of an optional natural gas shut-off device called an excess flow valve (EFV). For more information, click here or email NPU at


NPU Gas Grant information is available by clicking the green box below.

For questions or more information, please reach out to

For downloadable residential water service installation drawings, click here.

To view downloadable utility installation drawings, click here.

what not to flushFlushing non-degradable objects into the sewer system is an expensive and messy problem.  For a list of what not to flush, click the image.