What was found in ZIP 83539
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 | 548.65 µg/L 14% of the EPA limit 4000 µg/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2013 | 1/1 | SYR4 |
| Lithium | 11 µg/L No EPA limit set Main supplier: KOOSKIA WATER DEPT · 607 people · 2023 | 1/1 | UCMR-5 |
| Barium | 9.688 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2013 | 1/1 | SYR4 |
| Chromium | 2.587 µg/L 2.6% of the EPA limit 100 µg/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2013 | 1/1 | SYR4 |
| Selenium | 2.07 µg/L 4.1% of the EPA limit 50 µg/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2013 | 1/1 | SYR4 |
| Arsenic | 1.67 µg/L 17% of the EPA limit 10 µg/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2013 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.5032 pCi/L 10% of the EPA limit 5 pCi/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: KOOSKIA WATER DEPT · 607 people · 2025 | 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 83539
| Supplier | State | Population served |
|---|---|---|
| KOOSKIA WATER DEPT | ID | 607 |
Frequently asked questions about ZIP 83539 tap water
Is the tap water in ZIP 83539 safe to drink?
EPA testing detected 8 contaminants across the water suppliers serving ZIP 83539. 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 83539?
1 public water supplier report EPA drinking-water monitoring for ZIP 83539. Each is listed above with its population served.
What contaminants are in ZIP 83539's water?
EPA monitoring detected Fluoride, Lithium, Barium, Chromium, Selenium, and others across this ZIP's suppliers. The full list with levels and sources is above.