(please see 2013 review for current webpage links)
| Finding agency web site | Describe what state regulates | Contacts for agency staff | Transmission pipeline maps | Pipeline company contact info | Access to statutes, regulations | Inspection records | Incident data | Enforcement data | Excavation damage data | Total | |
| Arkansas | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 30 |
| Washington | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 30 |
| PHMSA | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 28 |
| South Dakota | 3 | 3 | 3 | 3 | 2 | 3 | 0 | 3 | 3 | 1 | 24 |
| Connecticut | 3 | 3 | 3 | 3 | 2 | 2 | 0 | 3 | 0 | 3 | 22 |
| Minnesota | 3 | 3 | 3 | 3 | 2 | 3 | 0 | 2 | 2 | 1 | 22 |
| West Virginia | 3 | 3 | 2 | 3 | 2 | 2 | 0 | 3 | 2 | 0 | 20 |
| Texas | 3 | 2 | 2 | 3 | 2 | 2 | 0 | 3 | 1 | 1 | 19 |
| Utah | 3 | 3 | 3 | 0 | 2 | 3 | 0 | 3 | 2 | 0 | 19 |
| Colorado | 3 | 3 | 3 | 3 | 2 | 3 | 0 | 0 | 0 | 1 | 18 |
| Illinois | 3 | 3 | 2 | 3 | 0 | 3 | 0 | 0 | 3 | 1 | 18 |
| Kentucky | 1 | 3 | 3 | 3 | 2 | 3 | 0 | 0 | 1 | 0 | 16 |
| Arizona | 3 | 3 | 3 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 15 |
| California Liquid | 3 | 3 | 3 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 15 |
| Indiana | 3 | 3 | 3 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 13 |
| Massachusetts | 3 | 3 | 1 | 0 | 2 | 2 | 0 | 2 | 0 | 0 | 13 |
| Oregon | 3 | 3 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 12 |
| Tennessee | 3 | 3 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 12 |
| Wisconsin | 3 | 3 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 12 |
| Louisiana | 3 | 3 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 11 |
| Virginia | 3 | 3 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 11 |
| Michigan | 1 | 2 | 1 | 1 | 2 | 3 | 0 | 0 | 0 | 0 | 10 |
| North Carolina | 3 | 3 | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 10 |
| Oklahoma | 0 | 3 | 2 | 2 | 0 | 3 | 0 | 0 | 0 | 0 | 10 |
| Vermont | 2 | 2 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 10 |
| DC | 0 | 3 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 9 |
| Idaho | 3 | 0 | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 9 |
| Maine | 3 | 2 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 9 |
| Mississippi | 3 | 2 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 9 |
| Montana | 3 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 9 |
| New Mexico | 1 | 3 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 9 |
| New York | 0 | 0 | 1 | 0 | 2 | 1 | 0 | 3 | 2 | 0 | 9 |
| Pennsylvania | 0 | 2 | 3 | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 9 |
| Wyoming | 3 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
| California Gas | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 8 |
| Georgia | 3 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 |
| Iowa | 3 | 2 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 8 |
| Nebraska | 3 | 0 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 8 |
| New Hampshire | 1 | 2 | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 8 |
| North Dakota | 3 | 2 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 8 |
| South Carolina | 1 | 3 | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 8 |
| Kansas | 3 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 7 |
| Alabama | 1 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Delaware | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Maryland | 0 | 2 | 2 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 6 |
| New Jersey | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Nevada | 0 | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
| Ohio | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
| Alaska | 0 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Rhode Island | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 4 |
| Florida | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Missouri | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 2 |
| Hawaii | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |