What was found in ZIP 51247
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 | 9395 µg/L 94% of the EPA limit 10000 µg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019 | 2/2 | SYR4 |
| Fluoride | 952.5 µg/L 24% of the EPA limit 4000 µg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 1216 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Copper | 1155 µg/L 89% of the EPA limit 1300 µg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2018 | 2/2 | SYR4 |
| Lithium | 14 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2025
Highest in the ZIP: 82 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2025 | 2/2 | UCMR-5 |
| Barium | 70 µg/L 3.5% of the EPA limit 2000 µg/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 1/2 | SYR4 |
| TTHM | 13 µg/L 16% of the EPA limit 80 µg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 53.8 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 30.98 µg/L 103% of the EPA limit, at the 95th percentile of samples — 30 µg/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2018 | 1/2 | SYR4 |
| Chloroform | 3.32 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 26.4 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.37 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 19.4 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 4.27 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 18.2 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.95 µg/L 12% of the EPA limit 60 µg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 17.8 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Lead | 14.6 µg/L 97% of the EPA limit 15 µg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2018 | 2/2 | SYR4 |
| Trichloroacetic Acid | 1.95 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 10 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 2 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 7.8 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.1 pCi/L 47% of the EPA limit 15 pCi/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2015 | 1/2 | SYR4 |
| Dibromoacetic Acid | 2.7 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 5.6 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.5 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019
Highest in the ZIP: 5.205 µg/L — RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 4.74 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 2 µg/L No EPA limit set Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.985 pCi/L 40% of the EPA limit 5 pCi/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2015 | 1/2 | 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 | 1/2 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 1/2 | SYR4 |
| Ethylbenzene | 0.9000 µg/L 0.1% of the EPA limit 700 µg/L Highest in the ZIP: RURAL WATER SYSTEM #1 · 3,428 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: ROCK VALLEY WATER SUPPLY · 4,059 people · 2025 | 2/2 | 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 51247
| Supplier | State | Population served |
|---|---|---|
| ROCK VALLEY WATER SUPPLY | IA | 4,059 |
| RURAL WATER SYSTEM #1 | IA | 3,428 |
Frequently asked questions about ZIP 51247 tap water
Is the tap water in ZIP 51247 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 51247. 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 51247?
2 public water suppliers report EPA drinking-water monitoring for ZIP 51247. Each is listed above with its population served.
What contaminants are in ZIP 51247's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Lithium, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.