What was found in ZIP 51031
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 |
|---|---|---|---|
| Copper | 1002 µg/L 77% of the EPA limit 1300 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2018 | 2/2 | SYR4 |
| Nitrate | 900 µg/L 9% of the EPA limit 10000 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 1/2 | SYR4 |
| Fluoride | 200 µg/L 5% of the EPA limit 4000 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2013
Highest in the ZIP: 260 µg/L — SOUTHERN SIOUX COUNTY RURAL WATER · 5,420 people · 2012 | 2/2 | SYR4 |
| Barium | 120 µg/L 6% of the EPA limit 2000 µg/L Highest in the ZIP: SOUTHERN SIOUX COUNTY RURAL WATER · 5,420 people · 2012 | 1/2 | SYR4 |
| Lithium | 92 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2024 | 2/2 | UCMR-5 |
| TTHM | 59.9 µg/L 75% of the EPA limit 80 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 24.6 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 17 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 16.45 µg/L 27% of the EPA limit 60 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 12.237 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Bromoform | 11.8 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 1/2 | SYR4 |
| Lead | 9.44 µg/L 63% of the EPA limit 15 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2018 | 2/2 | SYR4 |
| Chloroform | 7.22 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 4.3 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 3 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Dichloromethane | 2.3 µg/L 46% of the EPA limit 5 µg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.1 pCi/L 42% of the EPA limit 5 pCi/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2015 | 2/2 | SYR4 |
| Arsenic | 2 µg/L 20% of the EPA limit 10 µg/L Highest in the ZIP: SOUTHERN SIOUX COUNTY RURAL WATER · 5,420 people · 2012 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.221 µg/L No EPA limit set Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2019 | 2/2 | SYR4 |
| Lead | 0.0022 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: LEMARS WATER DEPARTMENT · 10,606 people · 2024
Highest in the ZIP: 0.0024 mg/L — SOUTHERN SIOUX COUNTY RURAL WATER · 5,420 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 51031
| Supplier | State | Population served |
|---|---|---|
| LEMARS WATER DEPARTMENT | IA | 10,606 |
| SOUTHERN SIOUX COUNTY RURAL WATER | IA | 5,420 |
Frequently asked questions about ZIP 51031 tap water
Is the tap water in ZIP 51031 safe to drink?
EPA testing detected 20 contaminants across the water suppliers serving ZIP 51031. 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 51031?
2 public water suppliers report EPA drinking-water monitoring for ZIP 51031. Each is listed above with its population served.
What contaminants are in ZIP 51031's water?
EPA monitoring detected Copper, Nitrate, Fluoride, Barium, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.