What was found in ZIP 80301
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 1100 µg/L 28% of the EPA limit 4000 µg/L | 2/2 | SYR4 |
| Nitrate | 240 µg/L 2.4% of the EPA limit 10000 µg/L | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 185.84 µg/L 310% of the EPA limit, in the worst sample — 60 µg/L | 2/2 | SYR4 |
| TTHM | 137.02 µg/L 171% of the EPA limit, in the worst sample — 80 µg/L | 2/2 | SYR4 |
| Chloroform | 83.2 µg/L No EPA limit set | 2/2 | SYR4 |
| Barium | 54 µg/L 2.7% of the EPA limit 2000 µg/L | 2/2 | SYR4 |
| Dichloroacetic Acid | 26 µg/L No EPA limit set | 2/2 | SYR4 |
| Nitrate-Nitrite | 22 µg/L 0.2% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Trichloroacetic Acid | 20.52 µg/L No EPA limit set | 2/2 | SYR4 |
| Bromodichloromethane | 14.7 µg/L No EPA limit set | 2/2 | SYR4 |
| Nitrite | 8.4 µg/L 0.8% of the EPA limit 1000 µg/L | 1/2 | SYR4 |
| Monochloroacetic Acid | 5.7 µg/L No EPA limit set | 1/2 | SYR4 |
| Xylenes, Total | 5.2 µg/L 0.1% of the EPA limit 10000 µg/L | 1/2 | SYR4 |
| Tetrachloroethylene | 3.1 µg/L 62% of the EPA limit 5 µg/L | 1/2 | SYR4 |
| Dibromochloromethane | 2.8 µg/L No EPA limit set | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.3 pCi/L 8.7% of the EPA limit 15 pCi/L | 1/2 | SYR4 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L | 1/2 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L | 1/2 | SYR4 |
| Ethylbenzene | 0.6100 µg/L 0.1% of the EPA limit 700 µg/L | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.2000 pCi/L 4% of the EPA limit 5 pCi/L | 1/2 | SYR4 |
| Hexachlorocyclopentadiene | 0.1100 µg/L 0.2% of the EPA limit 50 µg/L | 1/2 | SYR4 |
| Hexachlorobenzene | 0.0150 µg/L 1.5% of the EPA limit 1 µg/L | 1/2 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 2/2 | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 80301
| Supplier | State | Population served |
|---|---|---|
| BOULDER CITY OF | CO | 166,080 |
| LEFT HAND WD | CO | 20,280 |
Frequently asked questions about ZIP 80301 tap water
Is the tap water in ZIP 80301 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 80301. 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 80301?
2 public water suppliers report EPA drinking-water monitoring for ZIP 80301. Each is listed above with its population served.
What contaminants are in ZIP 80301's water?
EPA monitoring detected Fluoride, Nitrate, Total Haloacetic Acids (HAA5), TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.