What was found in ZIP 21157
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-Nitrite | 6877.5 µg/L 69% of the EPA limit 10000 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Nitrate | 6170 µg/L 62% of the EPA limit 10000 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Fluoride | 724 µg/L 18% of the EPA limit 4000 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| TTHM | 95.595 µg/L 119% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Barium | 85.8 µg/L 4.3% of the EPA limit 2000 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Chloroform | 77.89 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 63.9 µg/L 107% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 37.24 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2015 | 1/1 | SYR4 |
| Trichloroacetic Acid | 26.135 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2015 | 1/1 | SYR4 |
| Selenium | 20 µg/L 40% of the EPA limit 50 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 15.33 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Chromium | 10.4 µg/L 10% of the EPA limit 100 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 6.92 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2015 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 5.76 pCi/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Arsenic | 5.455 µg/L 55% of the EPA limit 10 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Cadmium | 3.75 µg/L 75% of the EPA limit 5 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 3.4 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.895 pCi/L 19% of the EPA limit 15 pCi/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.602 µg/L 43% of the EPA limit 6 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.27 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2015 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.68 pCi/L 34% of the EPA limit 5 pCi/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.49 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2018 | 1/1 | SYR4 |
| Atrazine | 0.4620 µg/L 15% of the EPA limit 3 µg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0667 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0246 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| Pfba | 0.0201 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| PFOA | 0.0124 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0086 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| Pfhpa | 0.0081 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| PFOS | 0.0069 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| PFHXS | 0.0042 µg/L No EPA limit set Main supplier: CITY OF WESTMINSTER · 35,256 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF WESTMINSTER · 35,256 people · 2024 | 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 21157
| Supplier | State | Population served |
|---|---|---|
| CITY OF WESTMINSTER | MD | 35,256 |
Frequently asked questions about ZIP 21157 tap water
Is the tap water in ZIP 21157 safe to drink?
EPA testing detected 32 contaminants across the water suppliers serving ZIP 21157. 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 21157?
1 public water supplier report EPA drinking-water monitoring for ZIP 21157. Each is listed above with its population served.
What contaminants are in ZIP 21157's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, TTHM, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.