What was found in ZIP 21793
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 9800 µg/L 98% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Nitrate-Nitrite | 2800 µg/L 28% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 99.99 µg/L 167% of the EPA limit, in the worst sample — 60 µg/L | 1/1 | SYR4 |
| Monochloroacetic Acid | 96.8 µg/L No EPA limit set | 1/1 | SYR4 |
| Barium | 33.7 µg/L 1.7% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| Dichloroacetic Acid | 27 µg/L No EPA limit set | 1/1 | SYR4 |
| TTHM | 22.01 µg/L 28% of the EPA limit 80 µg/L | 1/1 | SYR4 |
| Trichloroacetic Acid | 16 µg/L No EPA limit set | 1/1 | SYR4 |
| Gross Beta Particle Activity | 4.25 pCi/L No EPA limit set | 1/1 | SYR4 |
| Chloroform | 3.49 µg/L No EPA limit set | 1/1 | SYR4 |
| Tetrachloroethylene | 2.7 µg/L 54% of the EPA limit 5 µg/L | 1/1 | SYR4 |
| Bromodichloromethane | 2.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Dibromochloromethane | 2 µg/L No EPA limit set | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.3 µg/L No EPA limit set | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.13 µg/L No EPA limit set | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.7100 pCi/L 4.7% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Bromoform | 0.5000 µg/L No EPA limit set | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.1500 pCi/L 3% of the EPA limit 5 pCi/L | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 21793
| Supplier | State | Population served |
|---|---|---|
| TOWN OF WALKERSVILLE | MD | 8,440 |
Frequently asked questions about ZIP 21793 tap water
Is the tap water in ZIP 21793 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 21793. 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 21793?
1 public water supplier report EPA drinking-water monitoring for ZIP 21793. Each is listed above with its population served.
What contaminants are in ZIP 21793's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Total Haloacetic Acids (HAA5), Monochloroacetic Acid, and others across this ZIP's suppliers. The full list with levels and sources is above.