Learn how to stay safe around underground natural gas pipelines and other natural gas facilities.
Planning and working together
We provide safe and reliable natural gas to 24 counties in northeastern and central Wisconsin.
In all, our crews maintain nearly 7,392 miles of delivery system pipeline.
Download natural gas pipeline safety flyer
Descargue la versión en español del folleto sobre seguridad en los gasoductos de gas natural
We work hard to keep our delivery system safe and reliable and count on you to
follow all natural gas safety rules and report any incidents. This page provides
detailed information on:
The delivery system
Every day in the United States, several million cubic feet of natural gas
travel through an underground delivery system
to 64 million utility customers. The gas is extracted from the earth and fed
into gathering and transmission lines that bring supplies to all regions of
the United States. Some natural gas is stored underground for use later.
Natural gas is brought to utilities' "gate stations" that feed into gas mains,
then to your homes and businesses via service lines.
Our natural gas delivery system has an excellent track record of safety and reliability.
The company regularly tests, inspects, monitors and upgrades its system as required by state and federal laws.
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Pipeline location
There are several ways to identify if a pipeline or other natural gas
facility is located in your community:
Maps
Underground natural gas facilities are practically everywhere: under streets and
highways, around your home and business, in rural and urban communities.
General maps of these facilities are available to the public. For more information, visit
www.npms.phmsa.dot.gov.
Pipeline markers
We have installed above-ground markers to indicate our
pipeline "rights-of-way." However, markers do not indicate the exact location and depth of
the pipeline. The markers provide a toll-free number (800-450-7280)
to report problems 24 hours a day, 7 days a week. Transmission line markers are typically
placed at public road crossings, fence lines and street intersections. In most cases, these
are not located inside urban service territories. The public should become familiar with
nearby marker locations, and report any unusual or suspicious activities near these markers
to their local police and the pipeline operator.
Encroachments
In order to perform required safety inspections on our pipelines, we must
have clear access to the pipeline right-of-way. The area on either side of our
pipelines must be kept clear of trees, sheds and other structures.
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Preventing damage
The leading cause of accidents on a natural gas delivery system is hitting
lines when digging. Serious injury or death, property damage and service
outages can occur if gas pipes are stuck during excavation.
You are required by law to call 811
or your local one call center, at least three business days before you dig or excavate. Utilities will mark underground pipes
at your site free of charge. Once underground facilities are marked, you are required to follow established guidelines when
digging to prevent striking them.
Identifying pipeline damage
Natural gas is colorless and odorless. That's why utilities add an odorant called mercaptan to natural gas.
Its unpleasant smell helps alert you in the event of a gas leak. The unintentional release of gas is dangerous
to the public and could cause fires, explosions, injury, and even death. A gas leak or damaged pipeline is
indicated by the following:
- A strong odor
- A blowing or hissing sound from underground natural gas facilities or pipes
- Dirt blowing into the air or water bubbling
- Grass, plants or bushes turning brown over natural gas facilities
- Fire coming out of the ground
If you observe the above conditions, call the 800-450-7280
emergency phone number, the number on the pipeline marker or 9-1-1 from another location.
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Excess flow valves
An excess flow valve (EFV) is a safety device designed to automatically stop the flow
of natural gas through the service line if it exceeds a predetermined rate. When activated,
an EFV may prevent the buildup of natural gas and lessen the potential for property damage and/or injury.
It should be noted that these devices generally do not protect against slow leaks, such as those caused by
corrosion or loose fittings, or leaks located along customer-owned piping beyond the natural gas meter.
Many customers already have an EFV installed on their existing natural gas service line. Customers who do not
have an EFV may be eligible to have one installed at their own expense. Cost typically ranges from $750 to $2,000 depending
on the location and conditions of the installation site. Customers can request more information about EFV installations by
calling our 24-hour customer service at 800-450-7260.
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Customer-owned piping
We own and maintain the mains, service pipes and meters that provide your home or business with natural gas. The pipes beyond the meter, however, are your responsibility. This includes buried gas piping to yard lights, grills, garages and pool heaters.
Learn more about customer-owned piping.
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Pipeline integrity
To ensure safety, we work diligently to comply with the Gas Integrity Management Rule, established by the
Pipeline and Hazardous Materials Safety Administration. This mandate requires us to identify high density
population areas and perform periodic inspections of pipelines located in those areas. Our Pipeline Integrity
program describes these high density population areas, characterizes threats to the pipelines in these areas,
describes how these pipelines will be tested, and how any defects will be evaluated and repaired. The effectiveness
of this program is monitored, and the program is modified as needed to improve its effectiveness.
Physical damage to the pipeline and facilities is considered one of the most
severe threats to people and the environment. Our recently established Pipeline
Integrity and Public Awareness program ensures better protection from pipeline
incidents. To learn more about pipeline integrity management, visit the Pipeline
and Hazardous Materials Safety Administration website
www.phmsa.dot.gov/pipeline/gas-transmission-integrity-management/gas-transmission-integrity-management-gt-im-overview.
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Emergency preparedness
Public safety and environmental protection are a priority for us. We have longstanding relationships with
emergency responders where our facilities are located, as well as established, federally required emergency
response plans in place. Our personnel are ideally trained and equipped to manage any natural gas incident
in conjunction with emergency response officials.
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