Monday, August 11 is National 811 Day. Always call 811 or visit Gopher State One Call’s website before digging — it’s the law. Utility lines may be just inches below the surface, and hitting one could cause outages, damage or even an explosion.

To dig safely — and legally in Minnesota — you need to do three things:

  • Call 811 at least two business days before you dig.
  • Mark your yard (in white) so the locator knows where you’re digging and can mark the utilities in your yard appropriately.
  • Respect the locate marks and hand-dig carefully around them.

Utility locators follow the uniform color codes mandated by the American Public Works Association (APWA) for locate marks.

  • White: proposed construction
  • Orange: telephone & cable TV
  • Yellow: gas, oil, steam
  • Red: electric
  • Green: sewers & drain lines
  • Blue: water
  • Pink: temporary survey markings
  • Purple: reclaimed water.