What was found in ZIP 81503
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 | 691 µg/L 17% of the EPA limit 4000 µg/L Main supplier: UTE WCD · 92,580 people · 2017
Highest in the ZIP: 1047.5 µg/L — CLIFTON WD · 34,500 people · 2019 | 3/3 | SYR4 |
| Nitrate | 100 µg/L 1% of the EPA limit 10000 µg/L Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 1000 µg/L — GRAND JUNCTION CITY OF · 26,000 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 279.6 µg/L 2.8% of the EPA limit 10000 µg/L Highest in the ZIP: CLIFTON WD · 34,500 people · 2016 | 2/3 | SYR4 |
| Barium | 77.5 µg/L 3.9% of the EPA limit 2000 µg/L Highest in the ZIP: CLIFTON WD · 34,500 people · 2019 | 2/3 | SYR4 |
| TTHM | 50.345 µg/L 63% of the EPA limit 80 µg/L Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 71.035 µg/L — CLIFTON WD · 34,500 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 40.025 µg/L 67% of the EPA limit 60 µg/L Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 57.8 µg/L — CLIFTON WD · 34,500 people · 2019 | 3/3 | SYR4 |
| Nitrite | 50 µg/L 5% of the EPA limit 1000 µg/L Highest in the ZIP: GRAND JUNCTION CITY OF · 26,000 people · 2017 | 1/3 | SYR4 |
| Chloroform | 26.29 µg/L No EPA limit set Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 48.995 µg/L — GRAND JUNCTION CITY OF · 26,000 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 20.395 µg/L No EPA limit set Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 24.845 µg/L — GRAND JUNCTION CITY OF · 26,000 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 21.18 µg/L No EPA limit set Main supplier: UTE WCD · 92,580 people · 2019 | 3/3 | SYR4 |
| Lithium | 14.3 µg/L No EPA limit set Highest in the ZIP: CLIFTON WD · 34,500 people · 2023 | 1/3 | UCMR-5 |
| Bromodichloromethane | 3.459 µg/L No EPA limit set Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 14.14 µg/L — CLIFTON WD · 34,500 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 4.5935 µg/L No EPA limit set Highest in the ZIP: CLIFTON WD · 34,500 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 0.3260 µg/L No EPA limit set Main supplier: UTE WCD · 92,580 people · 2019
Highest in the ZIP: 2.8035 µg/L — CLIFTON WD · 34,500 people · 2019 | 3/3 | SYR4 |
| Vinyl Chloride | 1.2 µg/L 60% of the EPA limit 2 µg/L Highest in the ZIP: GRAND JUNCTION CITY OF · 26,000 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 1.123 µg/L No EPA limit set Main supplier: UTE WCD · 92,580 people · 2019 | 3/3 | SYR4 |
| Arsenic | 0.9955 µg/L 10% of the EPA limit 10 µg/L Highest in the ZIP: CLIFTON WD · 34,500 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 0.9700 µg/L No EPA limit set Highest in the ZIP: CLIFTON WD · 34,500 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 0.8100 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: GRAND JUNCTION CITY OF · 26,000 people · 2019 | 1/3 | SYR4 |
| Toluene | 0.5200 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the ZIP: GRAND JUNCTION CITY OF · 26,000 people · 2019 | 1/3 | SYR4 |
| Bromoform | 0.5000 µg/L No EPA limit set Highest in the ZIP: CLIFTON WD · 34,500 people · 2019 | 1/3 | SYR4 |
| Selenium | 0.4400 µg/L 0.9% of the EPA limit 50 µg/L Highest in the ZIP: CLIFTON WD · 34,500 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 0.2200 µg/L 0% of the EPA limit 700 µg/L Highest in the ZIP: GRAND JUNCTION CITY OF · 26,000 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Main supplier: UTE WCD · 92,580 people · 2025
Highest in the ZIP: 0.0082 mg/L — GRAND JUNCTION CITY OF · 26,000 people · 2025 | 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 81503
| Supplier | State | Population served |
|---|---|---|
| UTE WCD | CO | 92,580 |
| CLIFTON WD | CO | 34,500 |
| GRAND JUNCTION CITY OF | CO | 26,000 |
Frequently asked questions about ZIP 81503 tap water
Is the tap water in ZIP 81503 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 81503. 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 81503?
3 public water suppliers report EPA drinking-water monitoring for ZIP 81503. Each is listed above with its population served.
What contaminants are in ZIP 81503's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Barium, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.