| Rhode Island Department of Health | RI | Program Info | Program Website |
| South Carolina Department of Health and Environmental Control (SCDHEC) | SC | Program Info | Program Website |
| South Dakota Department of Environment & Natural Resources - SD State Health Laboratory | SD | Program Info | Program Website |
| Tennessee Department of Environment and Conservation Division of Water Resources | TN | Program Info | Program Website |
| Texas Commission on Environmental Quality | TX | Program Info | Program Website |
| Utah Department of Health | UT | Program Info | Program Website |
| Commonwealth of Virginia Department of General Services Division of Consolidated Laboratory Services (VA DCLS) | VA | Program Info | Program Website |
| Vermont Department of Health | VT | Program Info | Program Website |
| Washington State Department of Ecology Laboratory Accreditation Unit | WA | Program Info | Program Website |
| Wisconsin Department of Natural Resources | WI | Program Info | Program Website |
| West Virginia Bureau of Public Health-DHHR-Office of Laboratory Services | WV | Program Info | Program Website |
| West Virginia Department of Environmental Protection | WV | Program Info | Program Website |
| U.S. EPA Region 8/Wyoming | CO | Program Info | Program Website |
| Puerto Rico Department of Health | PR | Program Info | Program Website |
