| State | Drinking Water Source | State | Drinking Water Source |
| Alabama | Potomac River | Montana | Missouri River |
| Alaska | Eklutna Lake | Nebraska | Platte River |
| Arizona | Salt and Verde Rivers | Nevada | Kings Creek, Ash Creek and Marlette |
| Arkansas | Lake Winona and lake Maumelle | New Hampshire | Bellamy Reservoir |
| California | Sacramento and American River | New Jersey | Pequannock Watershed |
| Colorado | Strontia Springs | New Mexico | Bernalillo Rivers and Creeks |
| Connecticut | Farmington River | New York | Catskill/Delaware and Croton |
| Delaware | Heron Bay | North Carolina | Falls Lake Reservoir |
| Florida | Floridan Aquifer | North Dakota | Red River |
| Georgia | Chattahoochee River | Ohio | Scioto River |
| Hawaii | Haiku Tunnel and Well | Oklahoma | Canton Lake and McGee Creek |
| Idaho | Boise River | Oregon | Clear Creek |
| Illinois | Lake Springfield | Pennsylvania | Schuylkill River |
| Indiana | White River | Rhode Island | Scituate Reservoir |
| Iowa | Raccoon and Des Moines River | South Carolina | Lake Keowee |
| Kansas | Kansas River | South Dakota | Hilger’s and Whiskey Gulch basin |
| Kentucky | Old Hickory Lake | Tennessee | Cumberland River |
| Louisiana | Southern Hills Aquifer | Texas | Lake Austin |
| Maine | China Lake | Utah | Cottonwood Creek |
| Maryland | Magothy River, Upper and Lower Patapsco | Vermont | Berlin Pond |
| Massachusetts | Ware River | Virginia | James River |
| Michigan | Saginaw Sandstone Aquifer | Washington | Cedar River |
| Minnesota | Mississippi River | West Virginia | Elk River |
| Mississippi | Pearl River | Wisconsin | Lake Michigan |
| Missouri | Missouri River | Wyoming | Granite Springs Reservoir |
| Guam | Northern Guam Lens Aquifer | Puerto Rico | Karst Aquifer |
| US Virgin Islands | Seawater |
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