What was found in Rehoboth Beach's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 5265 µg/L 53% of the EPA limit 10000 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 9300 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 6/7 | SYR4 |
| Nitrate-Nitrite | 5190 µg/L 52% of the EPA limit 10000 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 9300 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 6/7 | SYR4 |
| Fluoride | 1405 µg/L 35% of the EPA limit 4000 µg/L Highest in the city: HENLOPEN ACRES, TOWN OF · 522 people · 2019 | 2/7 | SYR4 |
| Copper | 207.5 µg/L 16% of the EPA limit 1300 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 789.9 µg/L — SILVER VIEW FARM · 398 people · 2017 | 5/7 | SYR4 |
| Barium | 189.44 µg/L 9.5% of the EPA limit 2000 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 3/7 | SYR4 |
| Nitrite | 161.94 µg/L 16% of the EPA limit 1000 µg/L Highest in the city: PINE VALLEY MOBILE HOME PARK · 145 people · 2019 | 1/7 | SYR4 |
| Xylenes, Total | 24.795 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 2/7 | SYR4 |
| Lead | 4.28 µg/L 29% of the EPA limit 15 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 14.7 µg/L — SILVER VIEW FARM · 398 people · 2017 | 5/7 | SYR4 |
| TTHM | 7.358 µg/L 9.2% of the EPA limit 80 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 11.254 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 3/7 | SYR4 |
| Bromoform | 2.337 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 5.534 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 3/7 | SYR4 |
| Ethylbenzene | 4.4925 µg/L 0.6% of the EPA limit 700 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Dibromochloromethane | 2.856 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 4.082 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 3/7 | SYR4 |
| Thallium, Total | 3.92 µg/L 196% of the EPA limit, at the 95th percentile of samples — 2 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Chromium | 3.75 µg/L 3.8% of the EPA limit 100 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 3/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.3503 µg/L 3.9% of the EPA limit 60 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 3/7 | SYR4 |
| Tetrachloroethylene | 2.2435 µg/L 45% of the EPA limit 5 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Bromodichloromethane | 2.1815 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 3/7 | SYR4 |
| Monochloroacetic Acid | 1.9 µg/L No EPA limit set Highest in the city: REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 1/7 | SYR4 |
| Dibromoacetic Acid | 1.4918 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 1.7574 µg/L — HENLOPEN ACRES, TOWN OF · 522 people · 2019 | 2/7 | SYR4 |
| Chloroform | 1.4 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 3/7 | SYR4 |
| Selenium | 1.144 µg/L 2.3% of the EPA limit 50 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 1.22 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 3/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.1663 pCi/L 23% of the EPA limit 5 pCi/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 4/7 | SYR4 |
| Dichloroacetic Acid | 1.01 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Cadmium | 0.8600 µg/L 17% of the EPA limit 5 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Arsenic | 0.7850 µg/L 7.9% of the EPA limit 10 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Chlordane | 0.6820 µg/L 34% of the EPA limit 2 µg/L Highest in the city: HENLOPEN ACRES, TOWN OF · 522 people · 2019 | 1/7 | SYR4 |
| Beryllium, Total | 0.6800 µg/L 17% of the EPA limit 4 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 1/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6790 µg/L 11% of the EPA limit 6 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019 | 3/7 | SYR4 |
| Dinoseb | 0.2890 µg/L 4.1% of the EPA limit 7 µg/L Highest in the city: REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 1/7 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.1100 µg/L 0% of the EPA limit 400 µg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2019
Highest in the city: 0.2700 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 3/7 | SYR4 |
| Atrazine | 0.2260 µg/L 7.5% of the EPA limit 3 µg/L Highest in the city: REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2019 | 1/7 | SYR4 |
| Heptachlor Epoxide | 0.0675 µg/L 34% of the EPA limit 0.2000 µg/L Highest in the city: HENLOPEN ACRES, TOWN OF · 522 people · 2019 | 1/7 | SYR4 |
| PFOA | 0.0044 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2024
Highest in the city: 0.0149 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2024 | 2/7 | UCMR-5 |
| Lead | 0.00071 mg/L 4.7% of the EPA limit 0.0150 mg/L Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2024
Highest in the city: 0.0110 mg/L — SILVER VIEW FARM · 398 people · 2023 | 6/7 | LCR |
| Endrin | 0.0100 µg/L 0.5% of the EPA limit 2 µg/L Highest in the city: HENLOPEN ACRES, TOWN OF · 522 people · 2019 | 1/7 | SYR4 |
| Pfpea | 0.0094 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2024 | 2/7 | UCMR-5 |
| PFBS | 0.0058 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2024
Highest in the city: 0.0072 µg/L — REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2024 | 2/7 | UCMR-5 |
| PFHXS | 0.0069 µg/L No EPA limit set Highest in the city: REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2024 | 1/7 | UCMR-5 |
| Pfhxa | 0.0066 µg/L No EPA limit set Main supplier: REHOBOTH PUMP DISTRICT (TUI) · 81,417 people · 2024 | 2/7 | UCMR-5 |
| PFOS | 0.0062 µg/L No EPA limit set Highest in the city: REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2024 | 1/7 | UCMR-5 |
| Pfhpa | 0.0031 µg/L No EPA limit set Highest in the city: REHOBOTH BEACH WATER DEPARTMENT · 25,000 people · 2024 | 1/7 | UCMR-5 |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Rehoboth Beach
| Supplier | Population served |
|---|---|
| REHOBOTH PUMP DISTRICT (TUI) | 81,417 |
| REHOBOTH BEACH WATER DEPARTMENT | 25,000 |
| REHOBOTH BAY COMMUNITY | 1,575 |
| SEAGLASS AT REHOBOTH BEACH | 674 |
| HENLOPEN ACRES, TOWN OF | 522 |
| SILVER VIEW FARM | 398 |
| PINE VALLEY MOBILE HOME PARK | 145 |
Frequently asked questions about Rehoboth Beach tap water
Is Rehoboth Beach tap water safe to drink?
EPA testing detected 41 contaminants in the water serving Rehoboth Beach. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Rehoboth Beach?
7 public water suppliers report drinking-water monitoring for Rehoboth Beach, Delaware to the EPA. Each is listed above with its population served.
What contaminants are in Rehoboth Beach's water?
The contaminants EPA monitoring detected in Rehoboth Beach include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.