What was found in Prince Frederick'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 | 680 µg/L 6.8% of the EPA limit 10000 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2019
Highest in the city: 4500 µg/L — SOLOMONS · 3,811 people · 2019 | 16/16 | SYR4 |
| Fluoride | 238.5 µg/L 6% of the EPA limit 4000 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2019
Highest in the city: 357.5 µg/L — SOLOMONS · 3,811 people · 2019 | 16/16 | SYR4 |
| Barium | 23.4 µg/L 1.2% of the EPA limit 2000 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2019
Highest in the city: 220 µg/L — HUNTING HILLS · 124 people · 2019 | 11/16 | SYR4 |
| TTHM | 12.06 µg/L 15% of the EPA limit 80 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2019
Highest in the city: 26.7 µg/L — KENWOOD BEACH · 338 people · 2018 | 16/16 | SYR4 |
| Chloroform | 5.425 µg/L No EPA limit set Main supplier: PRINCE FREDERICK · 4,371 people · 2017
Highest in the city: 22.829 µg/L — SHORES OF CALVERT · 361 people · 2014 | 16/16 | SYR4 |
| Gross Beta Particle Activity | 15.9 pCi/L No EPA limit set Highest in the city: ST. LEONARD · 350 people · 2015 | 9/16 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.825 µg/L 6.4% of the EPA limit 60 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2019
Highest in the city: 11.25 µg/L — LAKEWOOD · 203 people · 2018 | 16/16 | SYR4 |
| Arsenic | 8.378 µg/L 84% of the EPA limit 10 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2019
Highest in the city: 11 µg/L — MARLEY RUN · 290 people · 2019 | 15/16 | SYR4 |
| Trichloroacetic Acid | 1.5 µg/L No EPA limit set Main supplier: PRINCE FREDERICK · 4,371 people · 2014
Highest in the city: 8.518 µg/L — CAVALIER COUNTRY · 381 people · 2014 | 16/16 | SYR4 |
| Dibromochloromethane | 2.595 µg/L No EPA limit set Main supplier: PRINCE FREDERICK · 4,371 people · 2017
Highest in the city: 8.205 µg/L — CHESAPEAKE HEIGHTS (BAYSIDE FOREST) · 1,190 people · 2016 | 12/16 | SYR4 |
| Dichloroacetic Acid | 2.45 µg/L No EPA limit set Main supplier: PRINCE FREDERICK · 4,371 people · 2014
Highest in the city: 7.7 µg/L — SUMMIT/HIGHLANDS · 1,108 people · 2016 | 16/16 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6 pCi/L 40% of the EPA limit 15 pCi/L Highest in the city: CAVALIER COUNTRY · 381 people · 2014 | 3/16 | SYR4 |
| Bromodichloromethane | 3.54 µg/L No EPA limit set Main supplier: PRINCE FREDERICK · 4,371 people · 2017 | 16/16 | SYR4 |
| Combined Radium (-226 And -228) | 2.6 pCi/L 52% of the EPA limit 5 pCi/L Highest in the city: SHORES OF CALVERT · 361 people · 2019 | 4/16 | SYR4 |
| Bromoform | 1.4 µg/L No EPA limit set Main supplier: PRINCE FREDERICK · 4,371 people · 2017 | 1/16 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Highest in the city: WHITE SANDS · 82 people · 2014 | 1/16 | SYR4 |
| Ethylbenzene | 0.6100 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2017 | 1/16 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: PRINCE FREDERICK · 4,371 people · 2023
Highest in the city: 0.0040 mg/L — TAPESTRY NORTH · 60 people · 2023 | 16/16 | LCR |
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 Prince Frederick
| Supplier | Population served |
|---|---|
| PRINCE FREDERICK | 4,371 |
| SOLOMONS | 3,811 |
| CHESAPEAKE HEIGHTS (BAYSIDE FOREST) | 1,190 |
| SUMMIT/HIGHLANDS | 1,108 |
| CROSS POINT SUBDIVISION | 434 |
| CAVALIER COUNTRY | 381 |
| SHORES OF CALVERT | 361 |
| ST. LEONARD | 350 |
| KENWOOD BEACH | 338 |
| MARLEY RUN | 290 |
| PARIS OAKS / DAYS END | 251 |
| LAKEWOOD | 203 |
| WALNUT CREEK | 158 |
| HUNTING HILLS | 124 |
| WHITE SANDS | 82 |
| TAPESTRY NORTH | 60 |
Frequently asked questions about Prince Frederick tap water
Is Prince Frederick tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Prince Frederick. 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 Prince Frederick?
16 public water suppliers report drinking-water monitoring for Prince Frederick, Maryland to the EPA. Each is listed above with its population served.
What contaminants are in Prince Frederick's water?
The contaminants EPA monitoring detected in Prince Frederick include Nitrate, Fluoride, Barium, TTHM, Chloroform. 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.