What was found in ZIP 83855
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 | 250.1 µg/L 6.3% of the EPA limit 4000 µg/L Main supplier: POTLATCH CITY OF · 812 people · 2019 | 1/1 | SYR4 |
| Barium | 70.166 µg/L 3.5% of the EPA limit 2000 µg/L Main supplier: POTLATCH CITY OF · 812 people · 2019 | 1/1 | SYR4 |
| Lithium | 36 µg/L No EPA limit set Main supplier: POTLATCH CITY OF · 812 people · 2023 | 1/1 | UCMR-5 |
| TTHM | 7.4315 µg/L 9.3% of the EPA limit 80 µg/L Main supplier: POTLATCH CITY OF · 812 people · 2019 | 1/1 | SYR4 |
| Arsenic | 5.472 µg/L 55% of the EPA limit 10 µg/L Main supplier: POTLATCH CITY OF · 812 people · 2019 | 1/1 | SYR4 |
| Chromium | 5.414 µg/L 5.4% of the EPA limit 100 µg/L Main supplier: POTLATCH CITY OF · 812 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.5032 pCi/L 10% of the EPA limit 5 pCi/L Main supplier: POTLATCH CITY OF · 812 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.1630 pCi/L 1.1% of the EPA limit 15 pCi/L Main supplier: POTLATCH CITY OF · 812 people · 2016 | 1/1 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: POTLATCH CITY OF · 812 people · 2025 | 1/1 | LCR |
| Asbestos | -0.20 MFL -2.9% of the EPA limit 7 MFL Main supplier: POTLATCH CITY OF · 812 people · 2013 | 1/1 | SYR4 |
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 83855
| Supplier | State | Population served |
|---|---|---|
| POTLATCH CITY OF | ID | 812 |
Frequently asked questions about ZIP 83855 tap water
Is the tap water in ZIP 83855 safe to drink?
EPA testing detected 10 contaminants across the water suppliers serving ZIP 83855. 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 83855?
1 public water supplier report EPA drinking-water monitoring for ZIP 83855. Each is listed above with its population served.
What contaminants are in ZIP 83855's water?
EPA monitoring detected Fluoride, Barium, Lithium, TTHM, Arsenic, and others across this ZIP's suppliers. The full list with levels and sources is above.