What was found in Hampstead'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 | 8300 µg/L 83% of the EPA limit 10000 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 7808 µg/L 78% of the EPA limit 10000 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2019 | 1/1 | SYR4 |
| Barium | 151.6 µg/L 7.6% of the EPA limit 2000 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| TTHM | 30.522 µg/L 38% of the EPA limit 80 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2019 | 1/1 | SYR4 |
| Chromium | 13.5 µg/L 14% of the EPA limit 100 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 11.94 pCi/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Chloroform | 6.82 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 6.714 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2016 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.66 pCi/L 44% of the EPA limit 15 pCi/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.464 µg/L 11% of the EPA limit 60 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 4.635 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2016 | 1/1 | SYR4 |
| Selenium | 4.5 µg/L 9% of the EPA limit 50 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 3.695 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2015 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 3.64 pCi/L 73% of the EPA limit 5 pCi/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Mercury | 1.91 µg/L 96% of the EPA limit 2 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.785 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2015 | 1/1 | SYR4 |
| Trichloroacetic Acid | 1.4835 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2015 | 1/1 | SYR4 |
| Bromoform | 1.2475 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2016 | 1/1 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2018 | 1/1 | SYR4 |
| Tetrachloroethylene | 0.5895 µg/L 12% of the EPA limit 5 µg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0173 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| Pfhxa | 0.0149 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| PFBS | 0.0134 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| PFOA | 0.0091 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| PFOS | 0.0057 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| Pfba | 0.0056 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| Pfhpa | 0.0052 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| PFHXS | 0.0034 µg/L No EPA limit set Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF HAMPSTEAD · 6,600 people · 2024 | 1/1 | 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 Hampstead
| Supplier | Population served |
|---|---|
| TOWN OF HAMPSTEAD | 6,600 |
Frequently asked questions about Hampstead tap water
Is Hampstead tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Hampstead. 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 Hampstead?
1 public water supplier report drinking-water monitoring for Hampstead, Maryland to the EPA. Each is listed above with its population served.
What contaminants are in Hampstead's water?
The contaminants EPA monitoring detected in Hampstead include Nitrate, Nitrate-Nitrite, Barium, TTHM, Chromium. 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.