What was found in ZIP 21788
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 3600 µg/L 36% of the EPA limit 10000 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2015 | 1/1 | SYR4 |
| Nitrate-Nitrite | 3487.5 µg/L 35% of the EPA limit 10000 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Fluoride | 158 µg/L 4% of the EPA limit 4000 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2018 | 1/1 | SYR4 |
| Barium | 16.25 µg/L 0.8% of the EPA limit 2000 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2018 | 1/1 | SYR4 |
| TTHM | 12.74 µg/L 16% of the EPA limit 80 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.525 pCi/L 30% of the EPA limit 15 pCi/L Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 4.353 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 3.855 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| 1,2-Dichloroethane | 3.331 µg/L 67% of the EPA limit 5 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Beryllium, Total | 3.1 µg/L 78% of the EPA limit 4 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2018 | 1/1 | SYR4 |
| Chloroform | 2.726 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Bromoform | 2.05 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.44 µg/L 2.4% of the EPA limit 60 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.338 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2014 | 1/1 | SYR4 |
| Trichloroethylene | 1.208 µg/L 24% of the EPA limit 5 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.3000 pCi/L 6% of the EPA limit 5 pCi/L Main supplier: TOWN OF THURMONT · 6,200 people · 2015 | 1/1 | SYR4 |
| Mercury | 0.1700 µg/L 8.5% of the EPA limit 2 µg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2018 | 1/1 | SYR4 |
| PFOS | 0.0480 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0150 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0053 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0043 µg/L No EPA limit set Main supplier: TOWN OF THURMONT · 6,200 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0040 mg/L 27% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF THURMONT · 6,200 people · 2018 | 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.
Water suppliers serving ZIP 21788
| Supplier | State | Population served |
|---|---|---|
| TOWN OF THURMONT | MD | 6,200 |
Frequently asked questions about ZIP 21788 tap water
Is the tap water in ZIP 21788 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 21788. 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 21788?
1 public water supplier report EPA drinking-water monitoring for ZIP 21788. Each is listed above with its population served.
What contaminants are in ZIP 21788's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.