What was found in ZIP 50264
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 |
|---|---|---|---|
| Nitrate | 2500 µg/L 25% of the EPA limit 10000 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019 | 1/3 | SYR4 |
| Copper | 200 µg/L 15% of the EPA limit 1300 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2017
Highest in the ZIP: 1240 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2018 | 3/3 | SYR4 |
| Fluoride | 546 µg/L 14% of the EPA limit 4000 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2014 | 1/3 | SYR4 |
| TTHM | 64.64999999999999 µg/L 81% of the EPA limit 80 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 95.09999999999997 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 33 µg/L 55% of the EPA limit 60 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 78.6 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Chloroform | 54.64999999999999 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 77.5 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Barium | 50 µg/L 2.5% of the EPA limit 2000 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2014 | 1/3 | SYR4 |
| Dichloroacetic Acid | 19.64999999999999 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 43.54999999999998 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 13.649999999999991 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 28.19999999999999 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Lead | 3.299999999999999 µg/L 22% of the EPA limit 15 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2017
Highest in the ZIP: 24.549999999999994 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2018 | 3/3 | SYR4 |
| Bromodichloromethane | 11 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 17 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 2.4499999999999993 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 6 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 2.7 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 5.8 µg/L — SIRWA #2 (CRESTON) · 20,793 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 5.449999999999999 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 4.3 µg/L 0.6% of the EPA limit 700 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 2 µg/L No EPA limit set Highest in the ZIP: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Highest in the ZIP: SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/3 | SYR4 |
| Bromoform | 0.7000 µg/L No EPA limit set Highest in the ZIP: SIRWA #2 (CRESTON) · 20,793 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.5350 µg/L 18% of the EPA limit 3 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019 | 1/3 | SYR4 |
| Simazine | 0.1000 µg/L 2.5% of the EPA limit 4 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0073 µg/L No EPA limit set Highest in the ZIP: SIRWA #3 (OSCEOLA) · 4,080 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2023
Highest in the ZIP: 0.0050 mg/L — SIRWA #2 (CRESTON) · 20,793 people · 2024 | 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 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 50264
| Supplier | State | Population served |
|---|---|---|
| RATHBUN REGIONAL WATER ASSN (RATHBUN) | IA | 33,000 |
| SIRWA #2 (CRESTON) | IA | 20,793 |
| SIRWA #3 (OSCEOLA) | IA | 4,080 |
Frequently asked questions about ZIP 50264 tap water
Is the tap water in ZIP 50264 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 50264. 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 50264?
3 public water suppliers report EPA drinking-water monitoring for ZIP 50264. Each is listed above with its population served.
What contaminants are in ZIP 50264's water?
EPA monitoring detected Nitrate, Copper, Fluoride, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.