Waterline Markers

Waterline Markers

ANSI-compliant
pipe marking labels.

Waterline markers allow workers, first responders, and other essential personnel to figure out which pipes carry what materials. In fast-paced environments, knowing the contents of your pipes is crucial to a safe, productive facility. Since OSHA requires organizations to apply pipe marking standards, waterline markers are a necessary form of visual communication.

Waterline markers come in a variety of OSHA-compliant colors. These visual markings cover chilled water, hot water supply, fire sprinkler water, and so much more. Labels are resistant to smudges, smears, chemical and water stains, and are easy to install and remove.

Browse waterline markers below. Looking to customize labels or signs? We’ve got you covered. We’re happy to create specialized labels and signs to meet your needs. Give us a call at 866-777-1360!

Free OSHA Label and Sign Chart

Free OSHA Label and Sign Chart

Recognize hazard signs at a glance with a free chart of OSHA’s sign and label color scheme.

LabelTac® 4, LabelTac® Pro X, and LabelTac® 9 are on sale through the end of May.
  • Create Custom Labels

    Every facility has unique needs when it comes to labeling. Whether it be for OSHA compliance, safety, health, informational, or organizational reasons. We know pre-made labels don’t cut it for some special projects. That’s where our team here... More details

    Create Custom Labels

    $3.90
  • Fire Sprinkler Water

    Pipe Labels: Fire Sprinkler Water Industrial facilities can be dangerous, and pipe marking labels are needed to keep employees and maintenance personnel safe. This label is for pipes containing Fire Sprinkler Water. Our pre-printed Fire Sprinkler Water... More details

    Fire Sprinkler Water

    $1.70
  • Chilled Water Return

    Pre-Printed Pipe Marking Labels: Chilled Water Return In many plants, factories, and production facilities, it is necessary to identify different water sources. This chilled water return label will display directional and source information to assist... More details

    Chilled Water Return

    $1.70
  • City Water

    City Water Pipe Marking Labels Keep employees and contractors informed of which pipe is which with one of our pre-printed pipe marking labels. These stickers indicate a pipe contains city water. Printed using our top-selling LabelTac® Industrial... More details

    City Water

    $1.70
  • Chilled Water Supply

    Chilled Water Supply Pre-Printed Pipe Marking Labels In warehouses, factories, and production facilities, it is necessary to identify different water sources. This chilled water supply pipe marker will communicate source and flow direction information... More details

    Chilled Water Supply

    $1.70
  • Water

    Water Pipe Labels Some workplaces are dangerous, and these Water pipe labels will ensure people know what pipes contain so they can behave accordingly. These pre-made marking labels make it easy and cost-effective to label your pipes and stay... More details

    Water

    $1.70
  • Hot Water Supply

    Pipe Labels: Hot Water Supply Industrial facilities can be dangerous, but properly labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed Hot Water Supply labels clearly indicate what a pipe contains. Printed using... More details

    Hot Water Supply

    $1.70
  • Cold Water

    Cold Water Pipe Marker Industrial facilities can be dangerous places, but labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed Cold Water pipe marking label quickly communicates the contents of a pipe. Printed using... More details

    Cold Water

    $1.70
  • Hot Water

    Pipe Labels: Hot Water Industrial facilities can be hazardous, and properly labeling pipes can help make the work environment safer. These pre-printed Hot Water labels quickly communicate what pipes contain. Printed using our top-selling... More details

    Hot Water

    $1.70
  • Hot Water Return

    Pipe Labels: Hot Water Return Industrial facilities can be dangerous places, but properly labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed Hot Water Return labels clearly specify what a pipe contains. Printed using... More details

    Hot Water Return

    $1.70
  • Potable Water

    Summary Potable water pipes (water that is suitable for consumption) must be labeled. Our pre-made labels make this easy. They are tough and last years even in outdoor applications. Once applied they are UV, water, chemical, and grease resistant... More details

    Potable Water

    $1.70
  • Non-Potable Water

    Summary Non-Potable Water lines (water that is not appropriate for consumption) should be labeled, along with other pipes in your facility, per OSHA regulations. Once applied, our pre-made pipe labels are resistant to water, chemicals, and the elements,... More details

    Non-Potable Water

    $1.70
  • Domestic Water

    Pre-Printed Domestic Water Pipe Marking Labels If you need to mark a domestic water pipe, our pre-printed markers are great for conveying important information to employees and visitors to your facility. We make these labels with a... More details

    Domestic Water

    $1.70
  • Recirculated Hot Water

    Summary Do you have have recirculated hot water pipes that need to be labeled? Don't mess with stencils or cheap labels. Our labels are the toughest around and can withstand extreme temperatures and damage from UV rays, water, greases, and other... More details

    Recirculated Hot Water

    $1.70
  • 140 Degrees Hot Water

    140° Hot Water Pipe Label Our 140° Hot Water pipe labels inform workers of what temperature of water is in a pipe. Application is easy: simply peel and stick to a clean, dry surface. Available with left-facing arrows, right-facing... More details

    140 Degrees Hot Water

    $1.70
  • Cold Water Supply

    Cold Water Supply Pipe Marking Labels Keep everyone informed of cold water supply pipe contents with our pre-printed pipe marking labels. These stickers come pre-made with the text "Cold Water Supply," but they can also be customized. Pipe markers are... More details

    Cold Water Supply

    $1.70
  • Condenser Water

    Condenser Water Pipe Marking Labels In any factory or manufacturing facility, it is important to know the difference between a water pipe and one used for condensates. Our pre-made pipe marking labels are printed with "condensate."  We offer lots... More details

    Condenser Water

    $1.70
  • Fire Protection Water

    Pipe Labels: Fire Protection Water Industrial facilities can be dangerous, but pipe marking labels can help keep employees and maintenance personnel safe. This label is for pipes that contain Fire Protection Water. Our pre-printed Fire Protection Water... More details

    Fire Protection Water

    $1.70
  • Deionized Water

    Pre-Made Deionized Water Pipe Marking Label These pipe marking labels come with the text Deionized Water, but can be customized to whatever text you would like. Made with a LabelTac® Industrial Label Printer, these pre-made pipe marking labels... More details

    Deionized Water

    $1.70
  • Domestic Hot Water

    Pre-Printed Domestic Hot Water Pipe Marking Labels Keep employees and contractors informed of which pipe has Domestic Hot Water in it with these pipe markers. We use LabelTac® 4 Industrial Label Printers to create these pre-made pipe marking... More details

    Domestic Hot Water

    $1.70
  • Process Water

    Summary OSHA regulations require all pipes, including pipes containing process water, to be labeled so people can quickly identify the pipes' contents. Our labels are tough - once applied, they are resistant to many industrial hazards like water,... More details

    Process Water

    $1.70
  • 140 Degrees Hot Water Return

    140° Hot Water Return Pipe Label These pre-printed 140° Hot Water Return pipe labels will communicate to employees what temperature of water is in a pipe. Application is easy: just peel and stick it to a clean, dry surface. Available... More details

    140 Degrees Hot Water Return

    $1.70
  • Process Water Supply

    Summary Our Process Water Supply labels are the toughest labels of their kind around. They are thermally pre-printed on a durable indoor/outdoor vinyl, capable of resisting water, UV, chemicals, greases, and extreme temperatures. Features: Made from... More details

    Process Water Supply

    $1.70
  • Reclaimed Water

    Reclaimed Water Pipe Labels Reclaimed Water is the waste water that’s been converted into reusable water. Identify this specific water pipe with durable pre-printed pipe marking labels. These pre-made marking labels make it easy and... More details

    Reclaimed Water

    $1.70
  • Chilled Water

    Pipe Marking Labels: Chilled Water Although it is one of the less-dangerous materials running through the pipes in your facility, this Chilled Water pipe label will help employees differentiate between the "safe" pipes and the dangerous substances... More details

    Chilled Water

    $1.70
  • Boiler Feed Water

    Boiler Feed Water Pipe Marking Label With all of the pipes and pneumatic lines running through your factory or production plant, it is important to mark what is what. Our Boiler Feed Water pipe labels will help communicate what is inside a pipe... More details

    Boiler Feed Water

    $1.70
  • Heating Water Return

    Pipe Labels: Heating Water Return Industrial facilities can be hazardous places, and pipe marking labels are needed to help keep employees and maintenance personnel safe. Our pre-printed Heating Water Return labels quickly communicate what pipes... More details

    Heating Water Return

    $1.70
  • Potable Cold Water

    Summary Potable Water is water that's safe for consumption. With our pre-printed Potable Cold Water pipe marking labels, simply peel and stick to any clean and dry surface. Once applied, our labels are resistant to water, oils and greases, UV rays, and... More details

    Potable Cold Water

    $1.70
  • Waste Water

    Waste Water Pipe Labels Some workplaces are dangerous, and these Waste Water labels will ensure people know what pipes contain so they can behave accordingly. These pre-made pipe marking labels make it easy and cost-effective to label your... More details

    Waste Water

    $1.70
  • Heating Water

    Pipe Labels: Heating Water Factories can be dangerous places, and pipes must be properly labeled to help keep employees and maintenance personnel safe. These Heating Water pipe labels quickly communicate what a pipe contains. Printed using our... More details

    Heating Water

    $1.70
  • Process Water Return

    Summary Do you need to label your Process Water Return lines? Our pre-made pipe marking labels make it easy to label these and other other pipes. Once applied, these labels are UV, water, chemical, and temperature-resistant. Need more information or... More details

    Process Water Return

    $1.70
  • Filtered Water

    Pipe Labels: Filtered Water Industrial facilities can be dangerous, and pipe marking labels are required to help keep employees and maintenance personnel safe. This is especially true when it comes to filtered water vs contaminated water. Our... More details

    Filtered Water

    $1.70
  • Heating Water Supply

    Pipe Labels: Heating Water Supply Industrial facilities can be potentially hazardous places, and properly labeling pipes helps create a safer working environment. Our pre-printed Heating Water Supply labels quickly communicate what pipes contain... More details

    Heating Water Supply

    $1.70
  • Well Water

    Well Water Pipe Labels Some workplaces are dangerous, and these Well Water pipe labels will ensure people know what pipes contain so they can behave accordingly.  These pre-made marking labels make it easy and cost-effective to label... More details

    Well Water

    $1.70
  • Cooling Water

    Pre-Printed Cooling Water Pipe Marking Label It is important, under OSHA and ANSI standards, to label your pipes, whether they contain corrosive acids or cooling water. Our pipe labels are made with a LabelTac® Industrial Label Printer, ensuring... More details

    Cooling Water

    $1.70
  • Potable Hot Water

    Summary Potable water is water that's safe for consumption. Our pre-made Potable Hot Water pipe labels make it easy to label these pipes. Once you determine the correct size labels for your pipes, all you need to do is peel the backing off the label and... More details

    Potable Hot Water

    $1.70
  • Soft Water

    Soft Water Pipe Labels Inform workers about which pipes contain soft water with these pipe marking labels. Printed using our top-selling LabelTac® Industrial Label Printers, these pre-made pipe marking labels make it easy and... More details

    Soft Water

    $1.70
  • Tempered Water

    Tempered Water Pipe Labels A factory can be a dangerous place. Make sure to properly label pipes to help increase safety. Tempered water labels will ensure people know what these pipes contain. These pre-made pipe marking labels make it easy... More details

    Tempered Water

    $1.70
  • Cold Water Return

    Pre-Printed Cold Water Return Pipe Marking Label Keep employees and contractors informed of pipe contents with our pre-printed pipe marking labels. These stickers come pre-made with Cold Water Return printed on them, but they can also be customized... More details

    Cold Water Return

    $1.70
  • 110 Degrees Hot Water Return

    110° Hot Water Return Pipe Labels Industrial plants can be dangerous, especially those using hot water. Our 110° Hot Water Return pipe labels will indicate what temperature of water is in the pipe. Application is easy: simply peel and... More details

    110 Degrees Hot Water Return

    $1.70
Most orders received before 1:00 PM PST ship the same day!

We're here to help! Questions? Want to order by phone? Call us, toll free 1-866-777-1360

Helpful Resources