Sussex County tap water
6 of 18 water systems serving Sussex County with full PFAS testing averaged above a 2024 federal PFAS level at one or more sampling points.
- 111 community water systems list this county as served; 16 serve 3,300+ people with full PFAS testing.
- 10 had a health-based violation since 2021-10-26.
Largest systems serving this county
| System | Source | People served (whole system) | PFAS above a 2024 level? | Violations since 2021-10-26 |
|---|---|---|---|---|
| Rehoboth Pump District (Tui) | Groundwater | 81,417 | No | 0 |
| Bethany Bay Pump District | Groundwater | 52,684 | Yes | 0 |
| Dewey Beach Water department | Purchased groundwater | 31,000 | Yes | 0 |
| Rehoboth Beach Water department | Groundwater | 25,000 | Yes | 0 |
| Artesian Southern Sussex Regional | Groundwater | 20,145 | Yes | 0 |
| Sussex Shores Water Company | Groundwater | 12,450 | No | 0 |
| Bethany Beach Water department | Groundwater | 12,000 | No | 0 |
| Long Neck Water Company | Groundwater | 11,000 | No | 0 |
| Lewes Board of Public Works | Groundwater | 9,627 | Yes | 0 |
| Millsboro Water department | Groundwater | 8,568 | No | 0 |
| Bayside Pump District (Tui) | Groundwater | 8,400 | No | 0 |
| Georgetown Water department | Groundwater | 7,259 | Yes | 0 |
Which one is yours? A county usually has several utilities. Your bill or your utility's annual water-quality report names yours. Population is for the whole system, which can cross county lines.
Not medical or legal advice. UCMR 5 results are screening data, not compliance determinations.
Sources and freshness
Public-water-system facts, violations and lead/copper results: EPA ECHO SDWA download (SDWIS snapshot 2026-10-13). PFAS and lithium results: EPA UCMR 5 final data (sampling 2023–2025). Both are U.S. government works, downloaded 2026-10-26. Numbers are computed by the published method; the same fields are in the open data files.