50-State 811 Dig Laws & Hydro-Vac Tolerance Zones
State-by-state 811 One-Call statutory damage prevention rules, mandatory tolerance safety zones (18"–24" where mechanical digging is prohibited), and vacuum excavation requirements.
| State | 811 One-Call Center Name | Statutory Tolerance Zone | Advance Notice Window | Max Civil Penalty (Failure to Call) |
|---|---|---|---|---|
| Alabama | Alabama 811 | 18 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| Alaska | Alaska 811 (AK DOT) | 24 inches either side of mark | 2 full business days | Up to $5,000 / violation |
| Arizona | Arizona 811 (Blue Stake) | 24 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| Arkansas | Arkansas 811 | 18 inches either side of mark | 2 full business days | Up to $2,500 / violation |
| California | Underground Service Alert (USA North / DigAlert) | 24 inches either side of mark (GC § 4216) | 2 full working days | Up to $50,000 (Gov Code 4216.6) |
| Colorado | Colorado 811 (UNCC) | 18 inches either side of mark | 3 full business days | Up to $10,000 / violation |
| Connecticut | Call Before You Dig (CBYD) | 18 inches either side of mark | 2 full working days | Up to $40,000 / violation |
| Delaware | Miss Utility of Delaware | 24 inches either side of mark | 2 full business days | Up to $25,000 / violation |
| Florida | Sunshine 811 | 24 inches either side of mark (FS Ch. 556) | 2 full business days | Up to $50,000 / violation |
| Georgia | Georgia 811 | 18 inches + half diameter of pipe | 2 full business days | Up to $10,000 / violation |
| Hawaii | Hawaii One Call Center | 24 inches either side of mark | 5 working days advance | Up to $5,000 / violation |
| Idaho | Dig Line (Idaho 811) | 24 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Illinois | JULIE (Illinois 811) / 811 Chicago | 18 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| Indiana | Indiana 811 (Holey Moley) | 24 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| Iowa | Iowa One Call (811) | 18 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| Kansas | Kansas 811 | 24 inches either side of mark | 2 full business days | Up to $5,000 / violation |
| Kentucky | Kentucky 811 (BUD) | 18 inches + half diameter of pipe | 2 full working days | Up to $10,000 / violation |
| Louisiana | Louisiana 811 | 18 inches either side of mark | 2 full business days | Up to $25,000 / violation |
| Maine | Dig Safe System (Maine 811) | 18 inches either side of mark | 3 full business days | Up to $10,000 / violation |
| Maryland | Miss Utility (Maryland 811) | 18 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Massachusetts | Dig Safe (Mass 811) | 18 inches either side of mark | 3 full business days | Up to $5,000 / violation |
| Michigan | MISS DIG 811 | 48 inches total (24" each side) | 3 full business days | Up to $15,000 / violation |
| Minnesota | Gopher State One Call (GSOC) | 24 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| Mississippi | Mississippi 811 | 18 inches + half diameter of pipe | 2 full working days | Up to $10,000 / violation |
| Missouri | Missouri 811 | 24 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Montana | Montana 811 | 18 inches either side of mark | 2 full business days | Up to $5,000 / violation |
| Nebraska | Nebraska 811 | 18 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Nevada | USA North 811 (Nevada) | 24 inches either side of mark | 2 full working days | Up to $25,000 / violation |
| New Hampshire | Dig Safe (NH 811) | 18 inches either side of mark | 3 full business days | Up to $10,000 / violation |
| New Jersey | NJ One Call (811) | 24 inches either side of mark | 3 full business days | Up to $25,000 / violation |
| New Mexico | New Mexico 811 | 18 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| New York | Dig Safely New York (UDIG NY) / 811 NYC | 24 inches either side of mark | 2 full working days | Up to $10,000 / violation |
| North Carolina | NC 811 | 24 inches either side of mark | 3 full working days | Up to $10,000 / violation |
| North Dakota | North Dakota One Call (NDOC) | 24 inches either side of mark | 2 full business days | Up to $25,000 / violation |
| Ohio | Ohio811 (OUPS) | 18 inches + half diameter of pipe | 2 full working days | Up to $10,000 / violation |
| Oklahoma | Oklahoma 811 (Okie811) | 24 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Oregon | Oregon 811 (OUNC) | 24 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Pennsylvania | PA One Call (Pennsylvania 811) | 18 inches either side of mark | 3 full business days | Up to $50,000 / violation |
| Rhode Island | Dig Safe (RI 811) | 18 inches either side of mark | 3 full business days | Up to $10,000 / violation |
| South Carolina | SC811 | 24 inches either side of mark | 3 full business days | Up to $10,000 / violation |
| South Dakota | South Dakota 811 | 18 inches either side of mark | 2 full business days | Up to $5,000 / violation |
| Tennessee | Tennessee 811 | 24 inches either side of mark | 3 full working days | Up to $10,000 / violation |
| Texas | Texas 811 (Texas One Call) | 18 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Utah | Blue Stakes of Utah 811 | 24 inches either side of mark | 2 full working days | Up to $5,000 / violation |
| Vermont | Dig Safe (Vermont 811) | 18 inches either side of mark | 3 full business days | Up to $10,000 / violation |
| Virginia | Virginia 811 (Miss Utility) | 24 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| Washington | Washington 811 (USA) | 24 inches either side of mark | 2 full business days | Up to $10,000 / violation |
| West Virginia | West Virginia 811 (Miss Utility) | 24 inches either side of mark | 2 full working days | Up to $5,000 / violation |
| Wisconsin | Diggers Hotline (Wisconsin 811) | 18 inches either side of mark | 3 full business days | Up to $25,000 / violation |
| Wyoming | Wyoming 811 | 24 inches either side of mark | 2 full working days | Up to $5,000 / violation |