Important Covid-19 Information

How to Know if a Pipeline is Near

DPU's Natural Gas Pipelines are generally identified with yellow markers along with warning signs. Markers are visible where pipelines cross streams, railroads, major roadways, and cleared right-of-way. All of the signs display a phone number to reach DPU 24 hours a day, 7 days a week. If you are working in the vicinity of a marker and have questions, please do not hesitate to call. Our emergency number is 803-268-4100.

pipeline marker

Natural Gas Safety Brochure

The DPU Natural Gas Division is committed to providing you with quality natural gas service at competitive rates in a safe, environmentally clean and efficient manner.

We have produced a guide to update you on pipeline safety measures and to provide you with the most economical and safest utility service possible. Most of our facilities are underground so you may not give us much thought. However, we think it is important that we work together for your safety and to protect the integrity of the pipelines. Please take a few moments to read this brochure and discover what your Gas Utility is doing for you.

Know What to Look (or Smell) For!

To insure your safety, natural gas is injected with a distinct odor which immediately alerts you to the presence of gas. The odor, often compared to the smell of rotten eggs, is present in such concentrations that, in the unlikely event of a leak, gas can usually be detected well before it is considered hazardous. Smell/look for the following:

  • Dead or discolored vegetation
  • A hissing or roaring sound
  • Dirt or debris blowing up into the air
  • Persistent bubbles in streams, ponds, or wet areas
  • Flames if leak has ignited
  • The smell of rotten eggs

In any case, if you ever smell natural gas and suspect a leak, you should take the following steps:


  • Operate a flashlight
  • Use a telephone
  • Turn electrical switches or other electrical equipment on or off
  • Strike a match or lighter


  • Open windows to increase the ventilation
  • If odor persists, immediately leave the house and call DPU (803) 268-4100 from a neighbor's phone.

811Call Before You Dig

One free, easy call gets your utility lines marked and helps protect you from injury and expense.

Know what's below. Always call 811 before you dig.

Visit for more information.

Free viewers are required for some of the attached documents.
They can be downloaded by clicking on the icons below.

Acrobat Reader Download Acrobat Reader Flash Player Download Flash Player Windows Media Player Download Windows Media Player Microsoft Silverlight Download Microsoft Silverlight Word Viewer Download Word Viewer Excel Viewer Download Excel Viewer PowerPoint Viewer Download PowerPoint Viewer