What was found in ZIP 51201
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 | 270 µg/L 2.7% of the EPA limit 10000 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 5292.5 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 3/3 | SYR4 |
| Fluoride | 533.5 µg/L 13% of the EPA limit 4000 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016
Highest in the ZIP: 1216 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 3/3 | SYR4 |
| Copper | 490.57 µg/L 38% of the EPA limit 1300 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2017
Highest in the ZIP: 1005 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2018 | 3/3 | SYR4 |
| TTHM | 64.25 µg/L 80% of the EPA limit 80 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 94.325 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 3/3 | SYR4 |
| Barium | 83.66 µg/L 4.2% of the EPA limit 2000 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016 | 3/3 | SYR4 |
| Lithium | 23.3 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2023
Highest in the ZIP: 82 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2025 | 3/3 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 41.42 µg/L 69% of the EPA limit 60 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 53.225 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 24.5485 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 43.59 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 2/3 | SYR4 |
| Chloroform | 37.88 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 18.4 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 31.2 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 12.73 µg/L 42% of the EPA limit 30 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2018
Highest in the ZIP: 30.98 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2018 | 2/3 | SYR4 |
| Dibromochloromethane | 9.38 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 29.925 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 21.195 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2018 | 2/3 | SYR4 |
| Dichloroacetic Acid | 16.1 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 12.88 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019 | 3/3 | SYR4 |
| Bromoform | 1.27 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 9.622 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 3/3 | SYR4 |
| Lead | 9.475 µg/L 63% of the EPA limit 15 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2017 | 3/3 | SYR4 |
| Dibromoacetic Acid | 3.1 µg/L No EPA limit set Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2019
Highest in the ZIP: 7.9135 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.55 pCi/L 44% of the EPA limit 15 pCi/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016
Highest in the ZIP: 7.1 pCi/L — RURAL WATER SYSTEM #1 · 3,428 people · 2015 | 2/3 | SYR4 |
| Monobromoacetic Acid | 5.406 µg/L No EPA limit set Highest in the ZIP: SHELDON WATER DEPARTMENT · 5,512 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 4.9 µg/L 0.7% of the EPA limit 700 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2018 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.575 pCi/L 32% of the EPA limit 5 pCi/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2018
Highest in the ZIP: 3.785 pCi/L — SHELDON WATER DEPARTMENT · 5,512 people · 2018 | 3/3 | SYR4 |
| Chromium | 2.02 µg/L 2% of the EPA limit 100 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016 | 1/3 | SYR4 |
| Arsenic | 1.875 µg/L 19% of the EPA limit 10 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016 | 2/3 | SYR4 |
| Selenium | 0.6000 µg/L 1.2% of the EPA limit 50 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016
Highest in the ZIP: 1.8 µg/L — SHELDON WATER DEPARTMENT · 5,512 people · 2015 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.1 µg/L 18% of the EPA limit 6 µg/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 1/3 | SYR4 |
| Antimony, Total | 0.1000 µg/L 1.7% of the EPA limit 6 µg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 people · 2016 | 1/3 | SYR4 |
| Lead | 0.0049 mg/L 33% of the EPA limit 0.0150 mg/L Main supplier: OSCEOLA RURAL WATER SYSTEM-NORTH · 7,002 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 51201
| Supplier | State | Population served |
|---|---|---|
| OSCEOLA RURAL WATER SYSTEM-NORTH | IA | 7,002 |
| SHELDON WATER DEPARTMENT | IA | 5,512 |
| RURAL WATER SYSTEM #1 | IA | 3,428 |
Frequently asked questions about ZIP 51201 tap water
Is the tap water in ZIP 51201 safe to drink?
EPA testing detected 28 contaminants across the water suppliers serving ZIP 51201. 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 51201?
3 public water suppliers report EPA drinking-water monitoring for ZIP 51201. Each is listed above with its population served.
What contaminants are in ZIP 51201's water?
EPA monitoring detected Nitrate, Fluoride, Copper, TTHM, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.