What was found in ZIP 81321
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 |
|---|---|---|---|
| Chlorite | 495 µg/L 50% of the EPA limit 1000 µg/L Main supplier: MONTEZUMA WC · 13,797 people · 2019 | 1/2 | SYR4 |
| Barium | 95 µg/L 4.8% of the EPA limit 2000 µg/L Main supplier: MONTEZUMA WC · 13,797 people · 2012
Highest in the ZIP: 96.5 µg/L — CORTEZ CITY OF · 8,770 people · 2016 | 2/2 | SYR4 |
| TTHM | 32.575 µg/L 41% of the EPA limit 80 µg/L Main supplier: MONTEZUMA WC · 13,797 people · 2019
Highest in the ZIP: 85.4 µg/L — CORTEZ CITY OF · 8,770 people · 2019 | 2/2 | SYR4 |
| Chloroform | 24.2 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2019
Highest in the ZIP: 68.04 µg/L — CORTEZ CITY OF · 8,770 people · 2018 | 2/2 | SYR4 |
| Nitrate-Nitrite | 61.4 µg/L 0.6% of the EPA limit 10000 µg/L Highest in the ZIP: CORTEZ CITY OF · 8,770 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 39 µg/L 65% of the EPA limit 60 µg/L Main supplier: MONTEZUMA WC · 13,797 people · 2019
Highest in the ZIP: 47.54 µg/L — CORTEZ CITY OF · 8,770 people · 2019 | 2/2 | SYR4 |
| Nitrate | 39 µg/L 0.4% of the EPA limit 10000 µg/L Highest in the ZIP: CORTEZ CITY OF · 8,770 people · 2019 | 1/2 | SYR4 |
| Nitrite | 36 µg/L 3.6% of the EPA limit 1000 µg/L Highest in the ZIP: CORTEZ CITY OF · 8,770 people · 2019 | 1/2 | SYR4 |
| Lithium | 29.1 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2025 | 2/2 | UCMR-5 |
| Trichloroacetic Acid | 15.35 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2019
Highest in the ZIP: 23.82 µg/L — CORTEZ CITY OF · 8,770 people · 2018 | 2/2 | SYR4 |
| Dichloroacetic Acid | 23.35 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 6.78 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2019
Highest in the ZIP: 9.46 µg/L — CORTEZ CITY OF · 8,770 people · 2018 | 2/2 | SYR4 |
| Chromium | 6.3 µg/L 6.3% of the EPA limit 100 µg/L Highest in the ZIP: CORTEZ CITY OF · 8,770 people · 2016 | 1/2 | SYR4 |
| Monochloroacetic Acid | 3.42 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.8 pCi/L 19% of the EPA limit 15 pCi/L Main supplier: MONTEZUMA WC · 13,797 people · 2014 | 1/2 | SYR4 |
| Dibromochloromethane | 1.435 µg/L No EPA limit set Main supplier: MONTEZUMA WC · 13,797 people · 2019 | 2/2 | SYR4 |
| Selenium | 1.2 µg/L 2.4% of the EPA limit 50 µg/L Highest in the ZIP: CORTEZ CITY OF · 8,770 people · 2016 | 1/2 | SYR4 |
| Dalapon | 1.19 µg/L 0.6% of the EPA limit 200 µg/L Highest in the ZIP: CORTEZ CITY OF · 8,770 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 0.1900 µg/L 0.6% of the EPA limit 30 µg/L Main supplier: MONTEZUMA WC · 13,797 people · 2014 | 1/2 | SYR4 |
| Lead | 0.0029 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: MONTEZUMA WC · 13,797 people · 2025 | 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 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 81321
| Supplier | State | Population served |
|---|---|---|
| MONTEZUMA WC | CO | 13,797 |
| CORTEZ CITY OF | CO | 8,770 |
Frequently asked questions about ZIP 81321 tap water
Is the tap water in ZIP 81321 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 81321. 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 81321?
2 public water suppliers report EPA drinking-water monitoring for ZIP 81321. Each is listed above with its population served.
What contaminants are in ZIP 81321's water?
EPA monitoring detected Chlorite, Barium, TTHM, Chloroform, Nitrate-Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.