FAQ One Call

Frequently Asked Questions About One Call Services

1. What is a One Call service?

A One Call service is a free utility notification service that helps prevent damage to underground infrastructure by notifying utility owners when someone plans to dig. It’s also called “Click Before You Dig.”

2. Why should I make a One Call?

Making a One Call helps:

  • Prevent injury or death.

  • Avoid damage to underground utilities like gas, water, and fiber optics.

  • Comply with provincial and federal regulations.

  • Prevent costly fines and delays.

3. Is it the law to contact One Call before digging?

Yes. In most provinces and territories, it's legally required to contact the One Call service

before disturbing the ground, even on private property.

4. What types of activities require a One Call?

You should make a One Call before:

  • Digging for landscaping or gardening

  • Installing fences, decks, or pools

  • Building structures or driveways

  • Excavating for construction or utility work

  • Driving posts or stakes into the ground

5. How far in advance should I contact One Call?

Typically, at least 3–5 business days before you plan to dig. This varies by province, so check with your local One Call center.

6. How do I make a One Call?

  • Online: Visit clickbeforeyoudig.com

  • Phone: Call your provincial One Call number (e.g., Ontario One Call: 1-800-400-2255)

7. What happens after I make a One Call?

  • A confirmation is sent to all utility owners with assets in your dig area.

  • Utility locators may visit your site to mark underground lines with flags, paint, or stakes.

  • You’ll receive clearance or instructions from each utility.

8. What do the different locate marks mean?

Colors follow a standard:

  • Red – Electric

  • Yellow – Gas, oil, steam

  • Orange – Communications

  • Blue – Water

  • Green – Sewer

  • White – Proposed excavation

9. Do I need to contact One Call if I'm digging by hand?

Yes. Even small or shallow digging can hit buried lines. Always contact One Call, regardless of equipment.

10. What if I hit a utility line?

  • Stop work immediately.

  • Move to a safe area.

  • Call 911 if there is danger (e.g., gas leak).

  • Notify the utility company and One Call service.

  • Report the incident even if there’s no visible damage.