Lead pipes by county in North Dakota
Lead, galvanized and unknown service lines reported by the water systems serving each North Dakota county.
| County | Lead | Galv. | Unknown | Systems |
|---|
| Adams County | 0 | 4 | 136 | 2 |
| Barnes County | 29 | 8 | 3,383 | 9 |
| Benson County | 0 | 4 | 736 | 4 |
| Billings County | 0 | 2 | 133 | 1 |
| Bottineau County | 102 | 11 | 1,695 | 8 |
| Bowman County | 0 | 4 | 893 | 3 |
| Burke County | 0 | 4 | 684 | 4 |
| Burleigh County | 177 | 15 | 8,385 | 7 |
| Cass County | 2,062 | 36 | 4,582 | 25 |
| Cavalier County | 0 | 10 | 2,516 | 4 |
| Dickey County | 5 | 22 | 1,453 | 6 |
| Divide County | 11 | 8 | 851 | 3 |
| Dunn County | 0 | 1 | 231 | 3 |
| Eddy County | 54 | 10 | 769 | 2 |
| Emmons County | 0 | 1 | 2,367 | 6 |
| Foster County | 62 | 3 | 778 | 1 |
| Golden Valley County | 5 | 1 | 423 | 3 |
| Grand Forks County | 936 | 88 | 4,502 | 7 |
| Grant County | 3 | 16 | 315 | 3 |
| Griggs County | 13 | 6 | 1,706 | 5 |
| Hettinger County | 7 | 12 | 598 | 3 |
| Kidder County | 2 | 5 | 444 | 3 |
| Lamoure County | 5 | 7 | 799 | 6 |
| Logan County | 2 | 3 | 400 | 2 |
| McHenry County | 11 | 9 | 1,216 | 6 |
| McIntosh County | 10 | 20 | 840 | 4 |
| McKenzie County | 0 | 3 | 1,509 | 5 |
| McLean County | 36 | 31 | 2,480 | 10 |
| Mercer County | 2 | 16 | 3,636 | 7 |
| Morton County | 64 | 17 | 6,264 | 9 |
| Mountrail County | 12 | 7 | 730 | 4 |
| Nelson County | 20 | 3 | 1,086 | 6 |
| Oliver County | 2 | 6 | 275 | 1 |
| Pembina County | 1 | 11 | 2,730 | 7 |
| Pierce County | 11 | 0 | 870 | 2 |
| Ramsey County | 151 | 9 | 903 | 3 |
| Ransom County | 52 | 17 | 1,210 | 4 |
| Renville County | 5 | 7 | 697 | 3 |
| Richland County | 128 | 19 | 3,109 | 13 |
| Rolette County | 2 | 0 | 1,162 | 5 |
| Sargent County | 7 | 9 | 514 | 3 |
| Sheridan County | 10 | 22 | 247 | 2 |
| Stark County | 128 | 8 | 3,511 | 7 |
| Steele County | 2 | 5 | 166 | 3 |
| Stutsman County | 262 | 14 | 2,971 | 7 |
| Towner County | 11 | 8 | 525 | 2 |
| Traill County | 37 | 10 | 2,222 | 5 |
| Walsh County | 52 | 7 | 2,241 | 4 |
| Ward County | 315 | 36 | 14,083 | 13 |
| Wells County | 79 | 24 | 1,136 | 6 |
| Williams County | 78 | 96 | 2,838 | 8 |
Systems serving several counties are counted in each. Source: EPA SDWIS service line inventory, 2026 Q3.