Lead pipes by county in Oregon
Lead, galvanized and unknown service lines reported by the water systems serving each Oregon county.
| County | Lead | Galv. | Unknown | Systems |
|---|---|---|---|---|
| Baker County | 0 | 0 | 337 | 2 |
| Benton County | 0 | 0 | 84 | 4 |
| Clackamas County | 0 | 0 | 1,028 | 27 |
| Clatsop County | 0 | 0 | 397 | 9 |
| Columbia County | 0 | 0 | 0 | 8 |
| Coos County | 0 | 0 | 1,875 | 7 |
| Crook County | 0 | 0 | 169 | 4 |
| Curry County | 0 | 0 | 1,632 | 5 |
| Deschutes County | 0 | 0 | 243 | 14 |
| Douglas County | 0 | 0 | 3,702 | 14 |
| Gilliam County | 0 | 0 | 262 | 1 |
| Grant County | 0 | 0 | 0 | 1 |
| Harney County | 0 | 0 | 160 | 2 |
| Hood River County | 0 | 0 | 0 | 4 |
| Jackson County | 0 | 0 | 944 | 10 |
| Jefferson County | 0 | 0 | 0 | 3 |
| Josephine County | 0 | 0 | 0 | 2 |
| Klamath County | 0 | 0 | 2 | 2 |
| Lane County | 0 | 0 | 144 | 15 |
| Lincoln County | 0 | 0 | 0 | 10 |
| Linn County | 0 | 0 | 3,241 | 10 |
| Malheur County | 0 | 0 | 0 | 3 |
| Marion County | 0 | 0 | 99 | 18 |
| Morrow County | 0 | 0 | 0 | 3 |
| Multnomah County | 0 | 0 | 44 | 12 |
| Polk County | 0 | 0 | 2,654 | 9 |
| Tillamook County | 0 | 0 | 1,334 | 14 |
| Umatilla County | 0 | 0 | 0 | 7 |
| Union County | 0 | 0 | 260 | 5 |
| Wallowa County | 0 | 0 | 189 | 3 |
| Wasco County | 0 | 0 | 6,367 | 5 |
| Washington County | 0 | 0 | 247 | 16 |
| Yamhill County | 0 | 0 | 797 | 18 |
Systems serving several counties are counted in each. Source: EPA SDWIS service line inventory, 2026 Q3.