What was found in ZIP 83403
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 |
|---|---|---|---|
| Nitrate | 4650 µg/L 47% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Nitrate-Nitrite | 4650 µg/L 47% of the EPA limit 10000 µg/L | 1/1 | SYR4 |
| Fluoride | 400 µg/L 10% of the EPA limit 4000 µg/L | 1/1 | SYR4 |
| Barium | 130 µg/L 6.5% of the EPA limit 2000 µg/L | 1/1 | SYR4 |
| Lithium | 57.4 µg/L No EPA limit set | 1/1 | UCMR-5 |
| Nitrite | 30 µg/L 3% of the EPA limit 1000 µg/L | 1/1 | SYR4 |
| TTHM | 8.6 µg/L 11% of the EPA limit 80 µg/L | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.8 µg/L 11% of the EPA limit 60 µg/L | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6 pCi/L 40% of the EPA limit 15 pCi/L | 1/1 | SYR4 |
| Combined Uranium | 2.584 µg/L 8.6% of the EPA limit 30 µg/L | 1/1 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L | 1/1 | SYR4 |
| Chloroform | 0.5500 µg/L No EPA limit set | 1/1 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L | 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 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 83403
| Supplier | State | Population served |
|---|---|---|
| IDAHO FALLS CITY OF | ID | 69,450 |
Frequently asked questions about ZIP 83403 tap water
Is the tap water in ZIP 83403 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 83403. 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 83403?
1 public water supplier report EPA drinking-water monitoring for ZIP 83403. Each is listed above with its population served.
What contaminants are in ZIP 83403's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Barium, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.