Determinations of Adequacy
| State | PHMSA Determination |
|---|---|
| Alabama | Adequate |
| Alaska | Inadequate |
| Arizona | Adequate |
| Arkansas | Adequate |
| California | Adequate |
| Colorado | Adequate |
| Connecticut | Adequate |
| Delaware | Adequate |
| District of Columbia | Adequate |
| Florida | Inadequate |
| Georgia | Adequate |
| Hawaii | Adequate |
| Idaho | Adequate |
| Illinois | Adequate |
| Indiana | Adequate |
| Iowa | Adequate |
| Kansas | Adequate |
| Kentucky | Adequate |
| Louisiana | Adequate |
| Maine | Adequate |
| Maryland | Adequate |
| Massachusetts | Adequate |
| Michigan | Adequate |
| Minnesota | Adequate |
| Mississippi | Adequate |
| Missouri | Adequate |
| Montana | Adequate |
| Nebraska | Adequate |
| Nevada | Adequate |
| New Hampshire | Adequate |
| New Jersey | Adequate |
| New Mexico | Adequate |
| New York | Adequate |
| North Carolina | Adequate |
| North Dakota | Adequate |
| Ohio | Adequate |
| Oklahoma | Adequate |
| Oregon | Adequate |
| Pennsylvania | Adequate |
| Puerto Rico | Adequate |
| Rhode Island | Adequate |
| South Carolina | Adequate |
| South Dakota | Inadequate |
| Tennessee | Adequate |
| Texas | Adequate |
| Utah | Adequate |
| Vermont | Adequate |
| Virginia | Adequate |
| Washington | Adequate |
| West Virginia | Adequate |
| Wisconsin | Adequate |
| Wyoming | Adequate |
Historical Maps - Determinations of Adequacy
Determinations of Adequacy 2016
Determinations of Adequacy 2017
Determinations of Adequacy 2018
Determinations of Adequacy 2019
Determinations of Adequacy 2020
Determinations of Adequacy 2021
Determinations of Adequacy 2022
Determinations of Adequacy 2023
Last updated: Friday, May 30, 2025