Rehoboth Bay Community, DE
Lead detected, under the action levels
Latest 90th-percentile lead: 0.69 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Rehoboth Bay Community serves about 1,575 people through 528 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Sussex County, Delaware. EPA system ID: DE0000645; phone on file: 302-227-3745. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rehoboth Bay Community is 2.7 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.69 ppb |
| 2025 | 0 (not detected) |
| 2025 | 0.77 ppb |
| 2025 | 0 (not detected) |
| 2022 | 0.68 ppb |
| 2019 | 2.7 ppb |
| 2016 | 2.1 ppb |
Against other Delaware systems
Of the 196 Delaware systems with a lead result, the median latest reading is 0.31 ppb; 1 are over 15 ppb right now and 14 have gone over at some point. Rehoboth Bay Community's 0.69 ppb sits at the 57th percentile in Delaware and the 46th nationally (higher means more lead).
Nearby utilities
96 other systems share Sussex County; 52 of them have a higher latest lead result than Rehoboth Bay Community. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Rehoboth Pump District (Tui) | 81,417 | 0.71 ppb |
| Bethany Bay Pump District | 52,684 | 2.3 ppb |
| Dewey Beach Water Department | 31,000 | 0 (not detected) |
| Rehoboth Beach Water Department | 25,000 | 0 (not detected) |
| Artesian Southern Sussex Regional | 20,145 | 2 ppb |
| Sussex Shores Water Company | 12,450 | 6.9 ppb |
| Bethany Beach Water Department | 12,000 | 4.9 ppb |
| Long Neck Water Company | 11,000 | 1.1 ppb |
| Lewes Board Of Public Works | 9,627 | 21.6 ppb |
| Millsboro Water Department | 8,568 | 5.2 ppb |
Next steps for Rehoboth Beach, DE
Test your own tap with a certified lab first-draw sample; Rehoboth Beach, DE may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Rehoboth Bay Community whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. The lead result guide covers how utilities pick the homes they sample. Systems that went over once often dip back under; here is what that means.