What was found in ZIP 50707
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 | 8467.5 µg/L 85% of the EPA limit 10000 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 2/2 | SYR4 |
| Copper | 291.5 µg/L 22% of the EPA limit 1300 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019
Highest in the ZIP: 634.8 µg/L — EVANSDALE WATER WORKS · 4,561 people · 2019 | 2/2 | SYR4 |
| Barium | 220.2 µg/L 11% of the EPA limit 2000 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2012 | 2/2 | SYR4 |
| Lead | 9.12 µg/L 61% of the EPA limit 15 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019
Highest in the ZIP: 75.69 µg/L — EVANSDALE WATER WORKS · 4,561 people · 2019 | 2/2 | SYR4 |
| Lithium | 20 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2024 | 1/2 | UCMR-5 |
| TTHM | 12.75 µg/L 16% of the EPA limit 80 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 9.81 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.8055 µg/L 11% of the EPA limit 60 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Chloroform | 5.88 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 3.745 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Selenium | 3.68 µg/L 7.4% of the EPA limit 50 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2012 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.9 pCi/L 58% of the EPA limit 5 pCi/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2018
Highest in the ZIP: 3.4 pCi/L — EVANSDALE WATER WORKS · 4,561 people · 2015 | 2/2 | SYR4 |
| Dichloroacetic Acid | 3.2425 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 2.755 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Trichloroethylene | 2.557 µg/L 51% of the EPA limit 5 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2018 | 1/2 | SYR4 |
| Tetrachloroethylene | 2.46 µg/L 49% of the EPA limit 5 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.665 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.57 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.32 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 2/2 | SYR4 |
| 1,1,1-Trichloroethane | 1.056 µg/L 0.5% of the EPA limit 200 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2018 | 1/2 | SYR4 |
| cis-1,2-Dichloroethylene | 0.9950 µg/L 1.4% of the EPA limit 70 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2018 | 1/2 | SYR4 |
| Bromoform | 0.9725 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.5000 µg/L 8.3% of the EPA limit 6 µg/L Main supplier: WATERLOO WATER WORKS · 69,504 people · 2012 | 1/2 | SYR4 |
| PFHXS | 0.0130 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0048 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2024 | 1/2 | UCMR-5 |
| PFBS | 0.0032 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0031 µg/L No EPA limit set Main supplier: WATERLOO WATER WORKS · 69,504 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: WATERLOO WATER WORKS · 69,504 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 50707
| Supplier | State | Population served |
|---|---|---|
| WATERLOO WATER WORKS | IA | 69,504 |
| EVANSDALE WATER WORKS | IA | 4,561 |
Frequently asked questions about ZIP 50707 tap water
Is the tap water in ZIP 50707 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 50707. 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 50707?
2 public water suppliers report EPA drinking-water monitoring for ZIP 50707. Each is listed above with its population served.
What contaminants are in ZIP 50707's water?
EPA monitoring detected Nitrate, Fluoride, Copper, Barium, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.