Delaware Hydrovac & Excavation Regulations
Excavation law, 811 notice rules, tolerance zone and penalties for Delaware, with citations to the statutes and the one-call center.
Last reviewed October 18, 2026. General information only, not legal advice. Laws change and vary by locality and utility, so always contact 811 and confirm current requirements before you dig. Read the disclaimer
Delaware at a Glance
Call 811 before you dig
- One-call center
- Delmarva 811 (Utilities Service Protection Center of Delmarva)Visit website for Delmarva 811 (Utilities Service Protection Center of Delmarva) (opens in a new tab)
- Phone
- 811 or 800-282-8555
- Notice required
- At least 3 business days but no more than 12 business days before work begins (day of notice excluded; weekend/holiday notices processed the next business day)
- Tolerance zone
- 24 inches
- Ticket life
- 12 business days
- Maximum penalty
- Up to $100,000 per violation for facility owners/operators, excavators with a business license, and the notification center ($500,000 if a structure is damaged; $1,000,000 if a death results)
Delaware rewrote its damage prevention law in 2026. Senate Bill 275 (85 Del. Laws c. 345) was signed and took effect July 13, 2026. Excavators must now notify Delmarva 811 at least 3 but no more than 12 business days before work starts, and tickets are valid for 12 business days.
The tolerance zone is 24 inches, and vacuum excavation is expressly permitted within it. Delmarva 811's own law page may still show the earlier rule, so rely on the Delaware Code text.
Tolerance Zone
24 inches
No mechanized equipment in the tolerance zone except for initial removal of hard surfaces. Vacuum excavation is permitted within the tolerance zone (26 Del. C. 802).
Key Regulations
Underground Utility Damage Prevention and Safety Act
Primary statute for excavation notice, marking and safety.
Citation: 26 Del. C. ch. 8, subch. I
Positive Response
No excavation may begin until every facility owner/operator posts a positive response (clear/no conflict or marked). Operators must respond within 3 business days. Tickets are valid 12 business days.
Citation: 26 Del. C. 803, 806
Emergency Provisions
For emergency excavation, notify the center at the earliest practicable moment.
Citation: 26 Del. C. 806(b)
Recent and Upcoming Changes
- SB 275 (85 Del. Laws c. 345), signed and effective July 13, 2026: notice is now 3 to 12 business days (was 2 to 10 working days), tickets last 12 business days, operators respond within 3 business days, the tolerance zone is 24 inches with vacuum excavation permitted, white lining is defined and highly recommended, tickets are limited to 1,320 continuous feet, complex project provisions were added, and maximum civil penalties rose.
Penalties for Violations
Violations are a misdemeanor under 26 Del. C. 810. The Public Service Commission enforces civil penalties, or the Attorney General when a death or structure damage results. Training is required for violations that result in civil penalties.
Maximum penalty: Up to $100,000 per violation for facility owners/operators, excavators with a business license, and the notification center ($500,000 if a structure is damaged; $1,000,000 if a death results)
- Other persons: $100 to $1,000 for a first offense; $200 to $5,000 for later offenses
Licensing and Permits to Confirm
Licensing depends on the type of work and the city or county. Treat these as items to check with the Delaware licensing board and your local permit office before bidding work.
- Delaware business license
- Contractor license or registration as required
- Liability insurance as required by law and by contract
Sources
Last reviewed October 18, 2026. Facts on this page were checked against these statutes, rules and one-call center pages.
Disclaimer
This guide is general information about state excavation and one-call (811) laws. It is not legal advice, and reading it does not create an attorney-client relationship.
Laws, rules and one-call center procedures change, and requirements can differ by city, county, utility operator and type of work. Facility operators may also set their own requirements. Before any excavation, contact the state one-call center through 811 and confirm current requirements in the statute and rules cited on this site. For questions about your obligations or liability, consult the statute directly or a licensed attorney in the state where the work takes place.
Hydrovac News makes no warranty that this information is complete, current or accurate, and is not liable for any loss or damage resulting from reliance on it.
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