What was found in ZIP 51401
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 | 7100 µg/L 71% of the EPA limit 10000 µg/L | 1/3 | SYR4 |
| Copper | 1800 µg/L 138% of the EPA limit, in the worst sample — 1300 µg/L | 3/3 | SYR4 |
| Fluoride | 1100 µg/L 28% of the EPA limit 4000 µg/L | 3/3 | SYR4 |
| Nitrite | 200 µg/L 20% of the EPA limit 1000 µg/L | 1/3 | SYR4 |
| Barium | 157 µg/L 7.9% of the EPA limit 2000 µg/L | 3/3 | SYR4 |
| TTHM | 57 µg/L 71% of the EPA limit 80 µg/L | 2/3 | SYR4 |
| Lithium | 53 µg/L No EPA limit set | 3/3 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 37 µg/L 62% of the EPA limit 60 µg/L | 3/3 | SYR4 |
| Chloroform | 36 µg/L No EPA limit set | 3/3 | SYR4 |
| Trichloroacetic Acid | 19 µg/L No EPA limit set | 3/3 | SYR4 |
| Dichloroacetic Acid | 17 µg/L No EPA limit set | 3/3 | SYR4 |
| Bromodichloromethane | 16 µg/L No EPA limit set | 2/3 | SYR4 |
| Dibromochloromethane | 15 µg/L No EPA limit set | 2/3 | SYR4 |
| Lead | 9.9 µg/L 66% of the EPA limit 15 µg/L | 3/3 | SYR4 |
| Monochloroacetic Acid | 6.98 µg/L No EPA limit set | 1/3 | SYR4 |
| Bromoform | 6.7 µg/L No EPA limit set | 1/3 | SYR4 |
| Dibromoacetic Acid | 4 µg/L No EPA limit set | 2/3 | SYR4 |
| Arsenic | 1.8 µg/L 18% of the EPA limit 10 µg/L | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.13 pCi/L 23% of the EPA limit 5 pCi/L | 1/3 | SYR4 |
| Lead | 0.0080 mg/L 53% of the EPA limit 0.0150 mg/L | 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 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 51401
| Supplier | State | Population served |
|---|---|---|
| CARROLL MUNICIPAL WATER SUPPLY | IA | 10,184 |
| WEST CENTRAL RWA - NISH SYSTEM | IA | 3,573 |
| WEST CENTRAL RWA-BOYER SYSTEM | IA | 1,715 |
Frequently asked questions about ZIP 51401 tap water
Is the tap water in ZIP 51401 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 51401. 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 51401?
3 public water suppliers report EPA drinking-water monitoring for ZIP 51401. Each is listed above with its population served.
What contaminants are in ZIP 51401's water?
EPA monitoring detected Nitrate, Copper, Fluoride, Nitrite, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.