What was found in ZIP 50588
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 | 242 µg/L 2.4% of the EPA limit 10000 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 1250 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 2/2 | SYR4 |
| Fluoride | 840 µg/L 21% of the EPA limit 4000 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019 | 2/2 | SYR4 |
| Nitrite | 521 µg/L 52% of the EPA limit 1000 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019 | 1/2 | SYR4 |
| Chlorite | 380.95 µg/L 38% of the EPA limit 1000 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019 | 1/2 | SYR4 |
| Copper | 68.425 µg/L 5.3% of the EPA limit 1300 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 149 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2017 | 2/2 | SYR4 |
| Lithium | 130 µg/L No EPA limit set Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2024 | 1/2 | UCMR-5 |
| TTHM | 49.9 µg/L 62% of the EPA limit 80 µg/L Highest in the ZIP: IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 1/2 | SYR4 |
| Chloroform | 11 µg/L No EPA limit set Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 29.7 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.9675 µg/L 12% of the EPA limit 60 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 14.8325 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 13.44 µg/L No EPA limit set Highest in the ZIP: IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 2.241 µg/L No EPA limit set Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 8.2 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 6.9 µg/L No EPA limit set Highest in the ZIP: IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 1/2 | SYR4 |
| Lead | 5.96 µg/L 40% of the EPA limit 15 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019 | 2/2 | SYR4 |
| Barium | 5.49 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2013 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.025 µg/L No EPA limit set Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 4.395 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 3.6585 µg/L No EPA limit set Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019 | 1/2 | SYR4 |
| Arsenic | 3.504 µg/L 35% of the EPA limit 10 µg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2016 | 1/2 | SYR4 |
| Dibromoacetic Acid | 0.5895 µg/L No EPA limit set Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2019
Highest in the ZIP: 2 µg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.675 µg/L No EPA limit set Highest in the ZIP: IOWA LAKES REGIONAL WATER · 6,755 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: STORM LAKE WATER TREATMENT PLANT · 11,431 people · 2025
Highest in the ZIP: 0.00030 mg/L — IOWA LAKES REGIONAL WATER · 6,755 people · 2023 | 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 50588
| Supplier | State | Population served |
|---|---|---|
| STORM LAKE WATER TREATMENT PLANT | IA | 11,431 |
| IOWA LAKES REGIONAL WATER | IA | 6,755 |
Frequently asked questions about ZIP 50588 tap water
Is the tap water in ZIP 50588 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 50588. 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 50588?
2 public water suppliers report EPA drinking-water monitoring for ZIP 50588. Each is listed above with its population served.
What contaminants are in ZIP 50588's water?
EPA monitoring detected Nitrate, Fluoride, Nitrite, Chlorite, Copper, and others across this ZIP's suppliers. The full list with levels and sources is above.