Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
| MCL | Health-based | Resolved | 1994-10-16 → 1997-10-15 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 82.96 µg/L 104% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 119.1 µg/L | 129/129 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 64.47 µg/L 107% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 86 µg/L | 127/127 | SYR4 | 2012–2019 |
| Chloroform | 66.96 µg/L No EPA limit set
worst single sample: 98.3 µg/L | 94/112 | SYR4 | 2012–2019 |
| Bromodichloromethane | 12.11 µg/L No EPA limit set
worst single sample: 17.5 µg/L | 64/112 | SYR4 | 2012–2019 |
| Dibromochloromethane | 2.5 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 63/112 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 31.96 µg/L No EPA limit set
worst single sample: 34.4 µg/L | 52/52 | SYR4 | 2012–2015 |
| Dichloroacetic Acid | 28.4 µg/L No EPA limit set
worst single sample: 35.6 µg/L | 51/52 | SYR4 | 2012–2015 |
| Nitrate | 4480.5 µg/L 45% of the EPA limit 10000 µg/L
worst single sample: 4750 µg/L | 32/32 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 8.56 µg/L No EPA limit set
worst single sample: 9.6 µg/L | 29/52 | SYR4 | 2012–2015 |
| Nitrate-Nitrite | 4309 µg/L 43% of the EPA limit 10000 µg/L
worst single sample: 4750 µg/L | 19/19 | SYR4 | 2012–2019 |
| Fluoride | 815 µg/L 20% of the EPA limit 4000 µg/L
worst single sample: 900 µg/L | 18/18 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2023 |
| Monochloroacetic Acid | 4.545 µg/L No EPA limit set
worst single sample: 5 µg/L | 8/52 | SYR4 | 2012–2015 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set | 5/52 | SYR4 | 2012–2015 |
| Combined Radium (-226 And -228) | 1.5719 pCi/L 31% of the EPA limit 5 pCi/L
worst single sample: 1.712 pCi/L | 4/6 | SYR4 | 2014–2017 |
| Gross Alpha, Excl. Radon And U | 14.995 pCi/L 100% of the EPA limit 15 pCi/L
worst single sample: 17.2 pCi/L | 4/9 | SYR4 | 2014–2017 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L | 3/33 | SYR4 | 2012–2019 |
| Combined Uranium | 8.51626 µg/L 28% of the EPA limit 30 µg/L
worst single sample: 9.4539 µg/L | 3/7 | SYR4 | 2014–2017 |
| Gross Beta Particle Activity | 2.271 pCi/L No EPA limit set
worst single sample: 2.34 pCi/L | 3/5 | SYR4 | 2014–2017 |
| Cyanide | 6 µg/L 3% of the EPA limit 200 µg/L | 1/15 | SYR4 | 2012–2019 |
82 contaminants tested, none detected
Utility contact
Frequently asked questions about Maryland American Water Company
Is Maryland American Water Company tap water safe to drink?
EPA monitoring detected 29 contaminants in Maryland American Water Company's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Maryland American Water Company's water?
EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Chloroform, Bromodichloromethane, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Maryland American Water Company serve?
Maryland American Water Company reports serving 13,200 people in Maryland, per its EPA record.
Has Maryland American Water Company had any water quality violations?
The EPA has 7 violations on file for Maryland American Water Company, of which 7 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.