Call 811 before starting a home improvement project that requires excavation. If you don’t, you could hit gas, electric, water, sewer, cable, or telephone lines, and endanger yourself and others.

Call 2 to 10 days before starting – whether planting a tree, putting in a mailbox or working on larger projects.
Utility companies will mark the pipes and wires with color-coded paint.
If you smell rotten eggs, you may have a gas leak. Leave the area immediately, and take others with you. Once you’re at a safe distance, call 1-800-75-CONED (1-800-752-6633) or 911. National Grid customers should call 1-718-643-4050. Your call can be anonymous.
For more gas safety tips, click here