What was found in Havre De Grace'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 | 2370 µg/L 24% of the EPA limit 10000 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2018
Highest in the city: 4420 µg/L — SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 1090 µg/L 11% of the EPA limit 10000 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2018
Highest in the city: 2825.5 µg/L — SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2018 | 3/3 | SYR4 |
| Fluoride | 752 µg/L 19% of the EPA limit 4000 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| TTHM | 115.39 µg/L 144% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| Chloroform | 69.1 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 63.07 µg/L 105% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| Barium | 35 µg/L 1.8% of the EPA limit 2000 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 25.625 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2015 | 3/3 | SYR4 |
| Trichloroacetic Acid | 24.075 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2015 | 3/3 | SYR4 |
| Bromodichloromethane | 20.775 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 17.6 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the city: SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 15.3 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2015 | 1/3 | SYR4 |
| Dibromoacetic Acid | 13.42 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2015 | 2/3 | SYR4 |
| Chromium | 10 µg/L 10% of the EPA limit 100 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 8.67 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2015 | 1/3 | SYR4 |
| Dibromochloromethane | 7.68 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 3/3 | SYR4 |
| Ethylbenzene | 4.6 µg/L 0.7% of the EPA limit 700 µg/L Highest in the city: SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2019 | 1/3 | SYR4 |
| Bromoform | 3.76 µg/L No EPA limit set Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2018 | 3/3 | SYR4 |
| Antimony, Total | 3 µg/L 50% of the EPA limit 6 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Arsenic | 3 µg/L 30% of the EPA limit 10 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Selenium | 3 µg/L 6% of the EPA limit 50 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Tetrachloroethylene | 2.788 µg/L 56% of the EPA limit 5 µg/L Highest in the city: SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2019 | 1/3 | SYR4 |
| Trichloroethylene | 1.1 µg/L 22% of the EPA limit 5 µg/L Highest in the city: SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2019 | 1/3 | SYR4 |
| Thallium, Total | 1 µg/L 50% of the EPA limit 2 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9100 µg/L 15% of the EPA limit 6 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Toluene | 0.7000 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: FOUNTAIN GREEN MOBILE HOME PARK · 55 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.5400 µg/L 18% of the EPA limit 3 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Beryllium, Total | 0.5000 µg/L 13% of the EPA limit 4 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Cadmium | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Mercury | 0.2000 µg/L 10% of the EPA limit 2 µg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: CITY OF HAVRE DE GRACE · 14,000 people · 2025
Highest in the city: 0.0060 mg/L — SWAN HARBOUR DELL MOBILE HOME PARK · 500 people · 2024 | 3/3 | 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 Havre De Grace
| Supplier | Population served |
|---|---|
| CITY OF HAVRE DE GRACE | 14,000 |
| SWAN HARBOUR DELL MOBILE HOME PARK | 500 |
| FOUNTAIN GREEN MOBILE HOME PARK | 55 |
Frequently asked questions about Havre De Grace tap water
Is Havre De Grace tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Havre De Grace. 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 Havre De Grace?
3 public water suppliers report drinking-water monitoring for Havre De Grace, Maryland to the EPA. Each is listed above with its population served.
What contaminants are in Havre De Grace's water?
The contaminants EPA monitoring detected in Havre De Grace include Nitrate, Nitrate-Nitrite, Fluoride, 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.