Blue Line

Blue Line Poly Pipe (Blue Stripe HDPE Pipe) – Potable Water Mains

Blue line poly pipe—also known as blue stripe HDPE pipe, blueline, or potable water main pipe - is manufactured to the same high standards as traditional black poly pipe, with one important distinction: a continuous blue external stripe.
This stripe provides a clear visual identification that the pipeline is carrying potable (drinking) water.

Engineers and installers rely on this coding system to quickly verify service type, especially in environments where multiple pipelines run side-by-side. The blue marking ensures that once the pipe is installed and backfilled, future excavation, maintenance, or inspection work can be carried out safely and confidently.

This identification system becomes particularly valuable when blue line pipes are installed in common trenches alongside other HDPE services, such as gas mains, which are identified with a yellow stripe. The colour differentiation minimises the risk of cross-connection, misidentification, and potential onsite safety issues.

Blue line HDPE pipes deliver the same long-term performance expected from quality HDPE piping: excellent corrosion resistance, flexibility in challenging terrain, durability under pressure, and suitability for underground potable water networks.

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