Lead pipes in Delaware
Delaware's 204 community water systems reported 2,691 lead and 3,601 galvanized-requiring-replacement service lines, plus 113,335 of unknown material. That ranks #36 among states for confirmed lead lines.
- Lead 0.8%
- Galvanized (replace) 1.1%
- Unknown 34%
- Non-lead 65%
1.9% of the service lines Delaware utilities reported are lead or galvanized requiring replacement, well below the national share of 3.1%. 34% are still unidentified (national: 21%). The largest counts are in Wilmington Water Department (2,377), Dover Water Department (1,273), Artesian Water Company (522). 11 systems haven't reported counts yet.
Since 2025 Q1, reported lead and galvanized lines in Delaware went from 6,292 to 6,292 (down 0). See which systems made the most progress.
Systems with confirmed lead lines (32)
No confirmed lead, but unknown lines remain (30)
No lead or unknown lines reported (13)
Systems serving 1,000 or more people. Systems without counts on file are listed as 0.
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Dewey Beach Water DepartmentDewey Beach | 0 | 0 | 0 | 0% |
| Bayside Pump District (Tui)Fenwick Island | 0 | 0 | 0 | 0% |
| East NCC DistrictOdessa | 0 | 0 | 0 | 0% |
| North West Pump DistrictMiddletown | 0 | 0 | 0 | 0% |
| Willow Grove MillMiddletown | 0 | 0 | 0 | 0% |
| Delaware Correctional CenterSmyrna | 0 | 0 | 0 | 0% |
| Swann KeysFenwick Island | 0 | 0 | 0 | 0% |
| Bridgeville Pump DistrictBridgeville | 0 | 0 | 0 | 0% |
| BurtonwoodCheswold | 0 | 0 | 0 | 0% |
| Mallard LakesFenwick Island | 0 | 0 | 0 | 0% |
| ParksideMiddletown | 0 | 0 | 0 | 0% |
| Pinewood AcresCheswold | 0 | 0 | 0 | 0% |
| Wild Quail Pump DistrictCamden-Wyoming | 0 | 0 | 0 | 0% |
Lead pipes in Delaware cities
- Wilmington2,377 lead + galv. lines
- Dover1,273 lead + galv. lines
- Newark1 lead + galv. lines
- Middletown35 lead + galv. lines
- Milford117 lead + galv. lines
- Smyrna9 lead + galv. lines
- Seaford3 lead + galv. lines
- Georgetown172 lead + galv. lines
- Millsboro77 lead + galv. lines
- Elsmere522 lead + galv. lines
- New Castle19 lead + galv. lines
- Clayton225 lead + galv. lines
- Laurel189 lead + galv. lines
- Camden206 unknown
- Lewes95 lead + galv. lines
- Ocean View1,183 unknown
- Townsend522 lead + galv. lines
- Bridgeville576 unknown
- Cheswold18 lead + galv. lines
- Delmar56 lead + galv. lines
- Millville1,183 unknown
- Delaware17 lead + galv. lines
- Wyoming206 unknown
- Felton20 lead + galv. lines
- Blades403 unknown
- Rehoboth Beach11 lead + galv. lines
- Bellefonte78 lead + galv. lines
- Bethany Beach1,082 unknown
Delaware lead pipe questions
How many lead pipes are in Delaware?
Delaware's community water systems reported 2,691 lead service lines and 3,601 galvanized lines that must be replaced, for 6,292 in total. Another 113,335 lines are of unknown material.
Which Delaware water systems have the most lead pipes?
Wilmington Water Department (2,377), Dover Water Department (1,273), Artesian Water Company (522). Counts are lead plus galvanized-requiring-replacement lines.
What share of Delaware service lines are lead?
1.9% of reported service lines in Delaware are lead or galvanized requiring replacement, well below the national figure of 3.1%. 34% are still unknown, compared with 21% nationally.
How do I find out if my Delaware home has a lead service line?
Search for your water system or ZIP code above, then open your utility's address-level inventory map. You can also check the pipe where it enters your home with a scratch and magnet test.
Source: EPA SDWIS service line inventory, 2026 Q3. Smaller systems with no lead or unknown lines are omitted. See also national rankings.