Each color used on the ground represents a different type of underground utility. Knowing what they mean can help you identify what's buried before you dig.
Standard Color Codes
🔴 Red – Electric power lines, cables, conduit, and lighting cables
🟡 Yellow – Gas, oil, steam, petroleum, or other flammable materials
🔵 Blue – Potable water
🟢 Green – Sewers and drain lines
🟣 Purple – Reclaimed water, irrigation, and slurry lines
🟠 Orange – Communication, alarm, or signal lines, cables, or conduits
⚪ White – Proposed excavation area (used by the excavator to show intent)
Where to Learn More
Visit https://texas811.org/
Choose Homeowner from the top menu
Select "View Color Code" under Utility Color Code
This simple guide helps ensure you understand the markings before any digging begins, keeping you safe and compliant.
🧠Learn More:
Want to dig deeper into Positive Responses? Explore these related help articles:
Need Help?
If you have questions or need assistance, the Texas811 support team is happy to guide you through the Portal, ticket responses, or any Positive Response questions.
📞 888-776-6077