What was found in ZIP 50857
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 |
|---|---|---|---|
| Copper | 1240 µg/L 95% of the EPA limit 1300 µg/L Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2018 | 1/1 | SYR4 |
| TTHM | 95.1 µg/L 119% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 78.6 µg/L 131% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Chloroform | 77.5 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 43.55 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 28.2 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Lead | 24.55 µg/L 164% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2018 | 1/1 | SYR4 |
| Bromodichloromethane | 17 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 5.8 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 5 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.7000 µg/L No EPA limit set Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0050 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: SIRWA #2 (CRESTON) · 20,793 people · 2024 | 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 50857
| Supplier | State | Population served |
|---|---|---|
| SIRWA #2 (CRESTON) | IA | 20,793 |
Frequently asked questions about ZIP 50857 tap water
Is the tap water in ZIP 50857 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 50857. 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 50857?
1 public water supplier report EPA drinking-water monitoring for ZIP 50857. Each is listed above with its population served.
What contaminants are in ZIP 50857's water?
EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Chloroform, Dichloroacetic Acid, and others across this ZIP's suppliers. The full list with levels and sources is above.