What was found in ZIP 52302
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 | 6470 µg/L 65% of the EPA limit 10000 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Fluoride | 742 µg/L 19% of the EPA limit 4000 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019
Highest in the ZIP: 1380 µg/L — MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 2/2 | SYR4 |
| Nitrite | 40 µg/L 4% of the EPA limit 1000 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019
Highest in the ZIP: 346 µg/L — MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 2/2 | SYR4 |
| Lithium | 182 µg/L No EPA limit set Highest in the ZIP: MARION MUNICIPAL WATER DEPT · 41,623 people · 2025 | 1/2 | UCMR-5 |
| Copper | 78.175 µg/L 6% of the EPA limit 1300 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019
Highest in the ZIP: 143.8 µg/L — MARION MUNICIPAL WATER DEPT · 41,623 people · 2018 | 2/2 | SYR4 |
| Barium | 76.14 µg/L 3.8% of the EPA limit 2000 µg/L Highest in the ZIP: MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 12 pCi/L No EPA limit set Highest in the ZIP: MARION MUNICIPAL WATER DEPT · 41,623 people · 2015 | 1/2 | SYR4 |
| Lead | 10.349 µg/L 69% of the EPA limit 15 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.9 µg/L 12% of the EPA limit 60 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.1 pCi/L 22% of the EPA limit 5 pCi/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019
Highest in the ZIP: 5.45 pCi/L — MARION MUNICIPAL WATER DEPT · 41,623 people · 2018 | 2/2 | SYR4 |
| Trichloroacetic Acid | 1 µg/L No EPA limit set Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019
Highest in the ZIP: 5.27 µg/L — MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 2/2 | SYR4 |
| TTHM | 4.1 µg/L 5.1% of the EPA limit 80 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 4 µg/L No EPA limit set Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 2.9 µg/L No EPA limit set Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Chloroform | 2.7 µg/L No EPA limit set Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Arsenic | 1.81 µg/L 18% of the EPA limit 10 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Selenium | 1.7 µg/L 3.4% of the EPA limit 50 µg/L Highest in the ZIP: MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 1.28 µg/L No EPA limit set Highest in the ZIP: MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.028 µg/L No EPA limit set Highest in the ZIP: MARION MUNICIPAL WATER DEPT · 41,623 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 1 µg/L No EPA limit set Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 2/2 | SYR4 |
| Atrazine | 0.5000 µg/L 17% of the EPA limit 3 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 1/2 | SYR4 |
| Toluene | 0.5000 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0016 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: CEDAR RAPIDS WATER DEPARTMENT · 142,364 people · 2025
Highest in the ZIP: 0.0083 mg/L — MARION MUNICIPAL WATER DEPT · 41,623 people · 2024 | 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 52302
| Supplier | State | Population served |
|---|---|---|
| CEDAR RAPIDS WATER DEPARTMENT | IA | 142,364 |
| MARION MUNICIPAL WATER DEPT | IA | 41,623 |
Frequently asked questions about ZIP 52302 tap water
Is the tap water in ZIP 52302 safe to drink?
EPA testing detected 23 contaminants across the water suppliers serving ZIP 52302. 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 52302?
2 public water suppliers report EPA drinking-water monitoring for ZIP 52302. Each is listed above with its population served.
What contaminants are in ZIP 52302's water?
EPA monitoring detected Nitrate, Fluoride, Nitrite, Lithium, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.