What was found in ZIP 21921
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 | 4400 µg/L 44% of the EPA limit 10000 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019
Highest in the ZIP: 8092.5 µg/L — ELKTON WEST · 3,500 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 4094 µg/L 41% of the EPA limit 10000 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019 | 2/3 | SYR4 |
| Fluoride | 424 µg/L 11% of the EPA limit 4000 µg/L Highest in the ZIP: TOWN OF NORTH EAST · 8,600 people · 2019 | 2/3 | SYR4 |
| Barium | 154 µg/L 7.7% of the EPA limit 2000 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019
Highest in the ZIP: 203.7 µg/L — ELKTON WEST · 3,500 people · 2018 | 3/3 | SYR4 |
| TTHM | 63.475 µg/L 79% of the EPA limit 80 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019
Highest in the ZIP: 90.615 µg/L — TOWN OF NORTH EAST · 8,600 people · 2019 | 3/3 | SYR4 |
| Chloroform | 48.1 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2015
Highest in the ZIP: 73.7 µg/L — TOWN OF NORTH EAST · 8,600 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 52.075 µg/L 87% of the EPA limit 60 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019
Highest in the ZIP: 70.628 µg/L — TOWN OF NORTH EAST · 8,600 people · 2019 | 3/3 | SYR4 |
| Dalapon | 57.9805 µg/L 29% of the EPA limit 200 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2017 | 2/3 | SYR4 |
| Trichloroacetic Acid | 18.25 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2014
Highest in the ZIP: 56.16 µg/L — TOWN OF NORTH EAST · 8,600 people · 2015 | 3/3 | SYR4 |
| Dichloroacetic Acid | 24.32 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2014
Highest in the ZIP: 35.3 µg/L — TOWN OF NORTH EAST · 8,600 people · 2015 | 3/3 | SYR4 |
| Bromodichloromethane | 13.6 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2015
Highest in the ZIP: 21.09 µg/L — ELKTON WEST · 3,500 people · 2018 | 3/3 | SYR4 |
| Dibromoacetic Acid | 10.56 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2014 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.1 pCi/L 61% of the EPA limit 15 pCi/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019
Highest in the ZIP: 10.09 pCi/L — ELKTON WEST · 3,500 people · 2018 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 8.04 pCi/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2016 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 4.02 pCi/L 80% of the EPA limit 5 pCi/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019
Highest in the ZIP: 6.975 pCi/L — ELKTON WEST · 3,500 people · 2018 | 2/3 | SYR4 |
| Dibromochloromethane | 2.865 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2015
Highest in the ZIP: 6.966 µg/L — ELKTON WEST · 3,500 people · 2018 | 3/3 | SYR4 |
| Selenium | 5 µg/L 10% of the EPA limit 50 µg/L Highest in the ZIP: ELKTON WEST · 3,500 people · 2018 | 1/3 | SYR4 |
| Monochloroacetic Acid | 4.84 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2014 | 2/3 | SYR4 |
| Chromium | 4.79 µg/L 4.8% of the EPA limit 100 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019 | 2/3 | SYR4 |
| Bromoform | 0.9500 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2015
Highest in the ZIP: 1.58 µg/L — ELKTON WEST · 3,500 people · 2018 | 2/3 | SYR4 |
| Monobromoacetic Acid | 1.395 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2014 | 1/3 | SYR4 |
| 2,4-D | 1.05 µg/L 1.5% of the EPA limit 70 µg/L Highest in the ZIP: TOWN OF NORTH EAST · 8,600 people · 2018 | 1/3 | SYR4 |
| Atrazine | 0.7700 µg/L 26% of the EPA limit 3 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2018 | 2/3 | SYR4 |
| Mercury | 0.4000 µg/L 20% of the EPA limit 2 µg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2019 | 1/3 | SYR4 |
| PFOA | 0.0233 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| Pfpea | 0.0144 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| Pfhxa | 0.0128 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| Pfba | 0.0086 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025
Highest in the ZIP: 0.0125 µg/L — TOWN OF NORTH EAST · 8,600 people · 2024 | 2/3 | UCMR-5 |
| PFBS | 0.0123 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| PFOS | 0.0071 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| Pfhpa | 0.0065 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| PFHXS | 0.0044 µg/L No EPA limit set Main supplier: TOWN OF ELKTON · 15,625 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF ELKTON · 15,625 people · 2024
Highest in the ZIP: 0.0010 mg/L — TOWN OF NORTH EAST · 8,600 people · 2023 | 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.
Water suppliers serving ZIP 21921
| Supplier | State | Population served |
|---|---|---|
| TOWN OF ELKTON | MD | 15,625 |
| TOWN OF NORTH EAST | MD | 8,600 |
| ELKTON WEST | DE | 3,500 |
Frequently asked questions about ZIP 21921 tap water
Is the tap water in ZIP 21921 safe to drink?
EPA testing detected 33 contaminants across the water suppliers serving ZIP 21921. 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 21921?
3 public water suppliers report EPA drinking-water monitoring for ZIP 21921. Each is listed above with its population served.
What contaminants are in ZIP 21921'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.