What was found in ZIP 52632
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-Nitrite | 6779 µg/L 68% of the EPA limit 10000 µg/L Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 1/3 | SYR4 |
| Nitrate | 6400 µg/L 64% of the EPA limit 10000 µg/L Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 1/3 | SYR4 |
| Fluoride | 810 µg/L 20% of the EPA limit 4000 µg/L Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2012 | 2/3 | SYR4 |
| Copper | 137.5 µg/L 11% of the EPA limit 1300 µg/L Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2018
Highest in the ZIP: 642.4 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2017 | 3/3 | SYR4 |
| TTHM | 55.75 µg/L 70% of the EPA limit 80 µg/L Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
Highest in the ZIP: 84.3 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 3/3 | SYR4 |
| Chloroform | 46.15 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
Highest in the ZIP: 72.65 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 3/3 | SYR4 |
| Barium | 54.07 µg/L 2.7% of the EPA limit 2000 µg/L Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2017 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.75 µg/L 36% of the EPA limit 60 µg/L Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
Highest in the ZIP: 36.65 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 15 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
Highest in the ZIP: 25.65 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 3/3 | SYR4 |
| Lead | 15.75 µg/L 105% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2018
Highest in the ZIP: 23.4 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2017 | 3/3 | SYR4 |
| Lithium | 16 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2024
Highest in the ZIP: 17 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2025 | 2/3 | UCMR-5 |
| Bromodichloromethane | 9.315 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
Highest in the ZIP: 11.65 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 7.5 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019
Highest in the ZIP: 11 µg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 4.7095 µg/L No EPA limit set Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 4 µg/L No EPA limit set Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 3.4 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019 | 3/3 | SYR4 |
| Chromium | 3.0075 µg/L 3% of the EPA limit 100 µg/L Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2017 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.364 µg/L No EPA limit set Highest in the ZIP: CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 2/3 | SYR4 |
| Bromoform | 1.16 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2019 | 2/3 | SYR4 |
| P-Dichlorobenzene | 1.04 µg/L 1.4% of the EPA limit 75 µg/L Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 1/3 | SYR4 |
| Dalapon | 0.5000 µg/L 0.3% of the EPA limit 200 µg/L Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2016 | 1/3 | SYR4 |
| Atrazine | 0.2000 µg/L 6.7% of the EPA limit 3 µg/L Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0120 µg/L No EPA limit set Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2024 | 2/3 | UCMR-5 |
| PFBS | 0.0063 µg/L No EPA limit set Highest in the ZIP: KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2025 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: RATHBUN REG WATER ASSN (FT MADISON) · 11,840 people · 2024
Highest in the ZIP: 0.0060 mg/L — KEOKUK MUNICIPAL WATER WORKS · 9,900 people · 2023 | 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 52632
| Supplier | State | Population served |
|---|---|---|
| RATHBUN REG WATER ASSN (FT MADISON) | IA | 11,840 |
| KEOKUK MUNICIPAL WATER WORKS | IA | 9,900 |
| CLARK COUNTY CONS PWSD 1 | MO | 7,140 |
Frequently asked questions about ZIP 52632 tap water
Is the tap water in ZIP 52632 safe to drink?
EPA testing detected 25 contaminants across the water suppliers serving ZIP 52632. 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 52632?
3 public water suppliers report EPA drinking-water monitoring for ZIP 52632. Each is listed above with its population served.
What contaminants are in ZIP 52632's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.