Lead pipes by county in Delaware
Lead, galvanized and unknown service lines reported by the water systems serving each Delaware county.
| County | Lead | Galv. | Unknown | Systems |
|---|---|---|---|---|
| Kent County | 689 | 1,922 | 12,998 | 21 |
| New Castle County | 1,871 | 1,183 | 82,839 | 14 |
| Sussex County | 131 | 496 | 17,498 | 40 |
Systems serving several counties are counted in each. Source: EPA SDWIS service line inventory, 2026 Q3.