What was found in ZIP 21769
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 | 2275.5 µg/L 23% of the EPA limit 10000 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2018 | 1/1 | SYR4 |
| Nitrate-Nitrite | 1945 µg/L 19% of the EPA limit 10000 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Fluoride | 394 µg/L 9.9% of the EPA limit 4000 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2018 | 1/1 | SYR4 |
| Barium | 79.64 µg/L 4% of the EPA limit 2000 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2018 | 1/1 | SYR4 |
| TTHM | 30.5405 µg/L 38% of the EPA limit 80 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.8085 µg/L 36% of the EPA limit 60 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Chloroform | 14.685 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 12.604 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2015 | 1/1 | SYR4 |
| Trichloroacetic Acid | 9.932 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2015 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 6.395 pCi/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2017 | 1/1 | SYR4 |
| Bromodichloromethane | 5.219 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 3.915 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 2.25 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2015 | 1/1 | SYR4 |
| Trichloroethylene | 2.24 µg/L 45% of the EPA limit 5 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 1.8 µg/L 0% of the EPA limit 10000 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.47 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2015 | 1/1 | SYR4 |
| Bromoform | 0.8880 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2017 | 1/1 | SYR4 |
| Arsenic | 0.7950 µg/L 8% of the EPA limit 10 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2018 | 1/1 | SYR4 |
| Ethylbenzene | 0.6000 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0092 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0062 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| PFOS | 0.0061 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| Pfba | 0.0051 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0049 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0048 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0034 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| Pfhpa | 0.0030 µg/L No EPA limit set Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF MIDDLETOWN · 4,288 people · 2014 | 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 21769
| Supplier | State | Population served |
|---|---|---|
| TOWN OF MIDDLETOWN | MD | 4,288 |
Frequently asked questions about ZIP 21769 tap water
Is the tap water in ZIP 21769 safe to drink?
EPA testing detected 28 contaminants across the water suppliers serving ZIP 21769. 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 21769?
1 public water supplier report EPA drinking-water monitoring for ZIP 21769. Each is listed above with its population served.
What contaminants are in ZIP 21769'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.