What was found in ZIP 80234
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 |
|---|---|---|---|
| Fluoride | 620 µg/L 16% of the EPA limit 4000 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019
Highest in the ZIP: 935 µg/L — BROOMFIELD CITY AND COUNTY OF · 106,153 people · 2019 | 3/3 | SYR4 |
| Nitrate | 150 µg/L 1.5% of the EPA limit 10000 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 150 µg/L 1.5% of the EPA limit 10000 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 2/3 | SYR4 |
| Nitrite | 60 µg/L 6% of the EPA limit 1000 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 1/3 | SYR4 |
| Barium | 55.5 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 3/3 | SYR4 |
| TTHM | 41.925 µg/L 52% of the EPA limit 80 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019
Highest in the ZIP: 50.165 µg/L — NORTHGLENN CITY OF · 48,927 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17.1 µg/L 29% of the EPA limit 60 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019
Highest in the ZIP: 39.195 µg/L — NORTHGLENN CITY OF · 48,927 people · 2019 | 3/3 | SYR4 |
| Chloroform | 21.725 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 3/3 | SYR4 |
| Lithium | 21.3 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2024 | 2/3 | UCMR-5 |
| Bromodichloromethane | 17.95 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 11.073 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019
Highest in the ZIP: 12.9875 µg/L — BROOMFIELD CITY AND COUNTY OF · 106,153 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 9.36 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 4.691 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019
Highest in the ZIP: 9.195 µg/L — NORTHGLENN CITY OF · 48,927 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 4.5525 µg/L No EPA limit set Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.8 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019
Highest in the ZIP: 3.781 µg/L — NORTHGLENN CITY OF · 48,927 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 2.1 µg/L No EPA limit set Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 2/3 | SYR4 |
| Bromoform | 1.149 µg/L No EPA limit set Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 2/3 | SYR4 |
| Combined Uranium | 1.1 µg/L 3.7% of the EPA limit 30 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2018 | 2/3 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.2900 pCi/L 1.9% of the EPA limit 15 pCi/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2018
Highest in the ZIP: 0.8000 pCi/L — NORTHGLENN CITY OF · 48,927 people · 2012 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7000 µg/L 12% of the EPA limit 6 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2017 | 1/3 | SYR4 |
| Xylenes, Total | 0.6765 µg/L 0% of the EPA limit 10000 µg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2019 | 1/3 | SYR4 |
| Styrene | 0.6590 µg/L 0.7% of the EPA limit 100 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 0.6560 pCi/L No EPA limit set Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2012 | 1/3 | SYR4 |
| 1,1,1-Trichloroethane | 0.5630 µg/L 0.3% of the EPA limit 200 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Carbon Tetrachloride | 0.5330 µg/L 11% of the EPA limit 5 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Selenium | 0.5000 µg/L 1% of the EPA limit 50 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 2/3 | SYR4 |
| Arsenic | 0.3200 µg/L 3.2% of the EPA limit 10 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Antimony, Total | 0.2400 µg/L 4% of the EPA limit 6 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.1780 pCi/L 3.6% of the EPA limit 5 pCi/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2012 | 1/3 | SYR4 |
| Thallium, Total | 0.0400 µg/L 2% of the EPA limit 2 µg/L Highest in the ZIP: NORTHGLENN CITY OF · 48,927 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: WESTMINSTER CITY OF · 202,078 people · 2025
Highest in the ZIP: 0.0025 mg/L — BROOMFIELD CITY AND COUNTY OF · 106,153 people · 2024 | 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 80234
| Supplier | State | Population served |
|---|---|---|
| WESTMINSTER CITY OF | CO | 202,078 |
| BROOMFIELD CITY AND COUNTY OF | CO | 106,153 |
| NORTHGLENN CITY OF | CO | 48,927 |
Frequently asked questions about ZIP 80234 tap water
Is the tap water in ZIP 80234 safe to drink?
EPA testing detected 32 contaminants across the water suppliers serving ZIP 80234. 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 80234?
3 public water suppliers report EPA drinking-water monitoring for ZIP 80234. Each is listed above with its population served.
What contaminants are in ZIP 80234's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Nitrite, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.