What was found in ZIP 21811
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4837.5 µg/L 48% of the EPA limit 10000 µg/L Main supplier: OCEAN PINES · 11,890 people · 2018
Highest in the ZIP: 5600 µg/L — TOWN OF BERLIN · 4,500 people · 2019 | 3/3 | SYR4 |
| Fluoride | 172.95 µg/L 4.3% of the EPA limit 4000 µg/L Highest in the ZIP: MYSTIC HARBOUR · 5,945 people · 2019 | 1/3 | SYR4 |
| Barium | 75.32 µg/L 3.8% of the EPA limit 2000 µg/L Main supplier: OCEAN PINES · 11,890 people · 2018 | 2/3 | SYR4 |
| TTHM | 22.125 µg/L 28% of the EPA limit 80 µg/L Main supplier: OCEAN PINES · 11,890 people · 2019
Highest in the ZIP: 36.795 µg/L — MYSTIC HARBOUR · 5,945 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.41 µg/L 9% of the EPA limit 60 µg/L Main supplier: OCEAN PINES · 11,890 people · 2019
Highest in the ZIP: 18.4865 µg/L — TOWN OF BERLIN · 4,500 people · 2019 | 3/3 | SYR4 |
| Chloroform | 6.31 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2019
Highest in the ZIP: 17.715 µg/L — MYSTIC HARBOUR · 5,945 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 7.6735 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2019
Highest in the ZIP: 10.544 µg/L — MYSTIC HARBOUR · 5,945 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 10.4 pCi/L No EPA limit set Highest in the ZIP: MYSTIC HARBOUR · 5,945 people · 2014 | 1/3 | SYR4 |
| Dibromochloromethane | 8.517 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 8.072 µg/L No EPA limit set Highest in the ZIP: MYSTIC HARBOUR · 5,945 people · 2015 | 1/3 | SYR4 |
| Dichloroacetic Acid | 3.049 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2014
Highest in the ZIP: 6.5045 µg/L — MYSTIC HARBOUR · 5,945 people · 2015 | 2/3 | SYR4 |
| Selenium | 5.39 µg/L 11% of the EPA limit 50 µg/L Main supplier: OCEAN PINES · 11,890 people · 2018 | 2/3 | SYR4 |
| Cadmium | 4.9 µg/L 98% of the EPA limit 5 µg/L Highest in the ZIP: MYSTIC HARBOUR · 5,945 people · 2019 | 1/3 | SYR4 |
| Bromoform | 3.888 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2019 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.59 pCi/L 24% of the EPA limit 15 pCi/L Highest in the ZIP: TOWN OF BERLIN · 4,500 people · 2017 | 1/3 | SYR4 |
| Dibromoacetic Acid | 3.0375 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2014 | 3/3 | SYR4 |
| Chromium | 1.83 µg/L 1.8% of the EPA limit 100 µg/L Main supplier: OCEAN PINES · 11,890 people · 2018
Highest in the ZIP: 2.085 µg/L — TOWN OF BERLIN · 4,500 people · 2018 | 3/3 | SYR4 |
| Thallium, Total | 1.8 µg/L 90% of the EPA limit 2 µg/L Main supplier: OCEAN PINES · 11,890 people · 2018 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Highest in the ZIP: TOWN OF BERLIN · 4,500 people · 2017 | 1/3 | SYR4 |
| Beryllium, Total | 0.4900 µg/L 12% of the EPA limit 4 µg/L Main supplier: OCEAN PINES · 11,890 people · 2018 | 1/3 | SYR4 |
| Pfba | 0.0078 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2025 | 1/3 | UCMR-5 |
| Pfpea | 0.0068 µg/L No EPA limit set Highest in the ZIP: TOWN OF BERLIN · 4,500 people · 2023 | 1/3 | UCMR-5 |
| PFHXS | 0.0049 µg/L No EPA limit set Highest in the ZIP: TOWN OF BERLIN · 4,500 people · 2023 | 1/3 | UCMR-5 |
| Pfhxa | 0.0048 µg/L No EPA limit set Highest in the ZIP: TOWN OF BERLIN · 4,500 people · 2023 | 1/3 | UCMR-5 |
| Lead | 0.0033 mg/L 22% of the EPA limit 0.0150 mg/L Main supplier: OCEAN PINES · 11,890 people · 2023
Highest in the ZIP: 0.0046 mg/L — TOWN OF BERLIN · 4,500 people · 2024 | 3/3 | LCR |
| PFBS | 0.0037 µg/L No EPA limit set Main supplier: OCEAN PINES · 11,890 people · 2025 | 1/3 | UCMR-5 |
| Pfhpa | 0.0035 µg/L No EPA limit set Highest in the ZIP: TOWN OF BERLIN · 4,500 people · 2023 | 1/3 | 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.
Water suppliers serving ZIP 21811
| Supplier | State | Population served |
|---|---|---|
| OCEAN PINES | MD | 11,890 |
| MYSTIC HARBOUR | MD | 5,945 |
| TOWN OF BERLIN | MD | 4,500 |
Frequently asked questions about ZIP 21811 tap water
Is the tap water in ZIP 21811 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 21811. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 21811?
3 public water suppliers report EPA drinking-water monitoring for ZIP 21811. Each is listed above with its population served.
What contaminants are in ZIP 21811's water?
EPA monitoring detected Nitrate, Fluoride, Barium, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.