What was found in ZIP 52501
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
Highest in the ZIP: 9000 µg/L — OTTUMWA WATER WORKS · 25,529 people · 2019 | 2/3 | SYR4 |
| Fluoride | 546 µg/L 14% of the EPA limit 4000 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2014
Highest in the ZIP: 970 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2013 | 3/3 | SYR4 |
| Lithium | 420 µg/L No EPA limit set Highest in the ZIP: WAPELLO RURAL WATER ASSOC. · 17,263 people · 2024 | 2/3 | UCMR-5 |
| Lead | 3.3 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: 335.99 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 3/3 | SYR4 |
| Copper | 200 µg/L 15% of the EPA limit 1300 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2017 | 3/3 | SYR4 |
| TTHM | 64.65 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: 84 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 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
Highest in the ZIP: 80.4 µg/L — OTTUMWA WATER WORKS · 25,529 people · 2012 | 2/3 | SYR4 |
| Chloroform | 54.65 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 65.3 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 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: 41.4 µg/L — OTTUMWA WATER WORKS · 25,529 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 19.65 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 29.3 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 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: 23.15 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 2.45 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 22.89 µg/L — OTTUMWA WATER WORKS · 25,529 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: 19 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 13.65 µg/L No EPA limit set Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 5.45 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: RATHBUN REGIONAL WATER ASSN (RATHBUN) · 33,000 people · 2019
Highest in the ZIP: 9 µg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 2/3 | SYR4 |
| Bromoform | 5.58 µg/L No EPA limit set Highest in the ZIP: WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 2/3 | 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 | 2/3 | SYR4 |
| Dibromoacetic Acid | 4.05 µg/L No EPA limit set Highest in the ZIP: WAPELLO RURAL WATER ASSOC. · 17,263 people · 2019 | 2/3 | SYR4 |
| Arsenic | 4 µg/L 40% of the EPA limit 10 µg/L Highest in the ZIP: OTTUMWA WATER WORKS · 25,529 people · 2012 | 1/3 | SYR4 |
| Monobromoacetic Acid | 3.5325 µg/L No EPA limit set Highest in the ZIP: OTTUMWA WATER WORKS · 25,529 people · 2019 | 2/3 | 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
Highest in the ZIP: 0.8880 µg/L — OTTUMWA WATER WORKS · 25,529 people · 2019 | 2/3 | 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 | 0.0050 µg/L No EPA limit set Highest in the ZIP: WAPELLO RURAL WATER ASSOC. · 17,263 people · 2024 | 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: 0.0012 mg/L — WAPELLO RURAL WATER ASSOC. · 17,263 people · 2025 | 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 52501
| Supplier | State | Population served |
|---|---|---|
| RATHBUN REGIONAL WATER ASSN (RATHBUN) | IA | 33,000 |
| OTTUMWA WATER WORKS | IA | 25,529 |
| WAPELLO RURAL WATER ASSOC. | IA | 17,263 |
Frequently asked questions about ZIP 52501 tap water
Is the tap water in ZIP 52501 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 52501. 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 52501?
3 public water suppliers report EPA drinking-water monitoring for ZIP 52501. Each is listed above with its population served.
What contaminants are in ZIP 52501's water?
EPA monitoring detected Nitrate, Fluoride, Lithium, Lead, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.