Lead pipes by county in Maine
Lead, galvanized and unknown service lines reported by the water systems serving each Maine county.
| County | Lead | Galv. | Unknown | Systems |
|---|---|---|---|---|
| Androscoggin County | 11 | 229 | 9,910 | 7 |
| Aroostook County | 0 | 455 | 3,808 | 13 |
| Cumberland County | 0 | 22 | 3,211 | 7 |
| Franklin County | 0 | 17 | 51 | 5 |
| Hancock County | 2 | 31 | 1,061 | 9 |
| Kennebec County | 9 | 155 | 1,878 | 10 |
| Knox County | 0 | 0 | 18 | 3 |
| Lincoln County | 0 | 1 | 1,488 | 4 |
| Oxford County | 4 | 1 | 3,424 | 10 |
| Penobscot County | 4 | 443 | 3,951 | 12 |
| Piscataquis County | 0 | 46 | 1,069 | 6 |
| Sagadahoc County | 0 | 8 | 120 | 3 |
| Somerset County | 0 | 36 | 1,895 | 7 |
| Waldo County | 0 | 4 | 67 | 4 |
| Washington County | 0 | 25 | 1,983 | 11 |
| York County | 0 | 131 | 2,304 | 17 |
Systems serving several counties are counted in each. Source: EPA SDWIS service line inventory, 2026 Q3.