What was found in Peosta's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 700 µg/L 18% of the EPA limit 4000 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2013 | 4/4 | SYR4 |
| Copper | 341.3 µg/L 26% of the EPA limit 1300 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019
Highest in the city: 437.85 µg/L — THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2017 | 4/4 | SYR4 |
| Nitrate | 200 µg/L 2% of the EPA limit 10000 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019
Highest in the city: 300 µg/L — LOST CANYON MHP (PEOSTA) · 97 people · 2019 | 2/4 | SYR4 |
| Barium | 43.1 µg/L 2.2% of the EPA limit 2000 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2013
Highest in the city: 182 µg/L — LOST CANYON MHP (PEOSTA) · 97 people · 2013 | 4/4 | SYR4 |
| TTHM | 3.649 µg/L 4.6% of the EPA limit 80 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019
Highest in the city: 9.382 µg/L — THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.36 µg/L 8.9% of the EPA limit 60 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019
Highest in the city: 8.09 µg/L — THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 2/4 | SYR4 |
| Lead | 2.055 µg/L 14% of the EPA limit 15 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019
Highest in the city: 6.75 µg/L — BURDS GREEN ACRES SUBDIVISION · 312 people · 2019 | 4/4 | SYR4 |
| Chloroform | 5.687 µg/L No EPA limit set Highest in the city: THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 3/4 | SYR4 |
| Dibromochloromethane | 1.214 µg/L No EPA limit set Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019
Highest in the city: 5.255 µg/L — BURDS GREEN ACRES SUBDIVISION · 312 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 4.24 µg/L No EPA limit set Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 3.54 pCi/L 71% of the EPA limit 5 pCi/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2018 | 4/4 | SYR4 |
| Xylenes, Total | 3.404 µg/L 0% of the EPA limit 10000 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2018 | 1/4 | SYR4 |
| Dichloroacetic Acid | 3.09 µg/L No EPA limit set Highest in the city: THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 1/4 | SYR4 |
| Bromodichloromethane | 2.693 µg/L No EPA limit set Highest in the city: THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 3/4 | SYR4 |
| Trichloroacetic Acid | 2.342 µg/L No EPA limit set Highest in the city: THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 3/4 | SYR4 |
| Bromoform | 2.222 µg/L No EPA limit set Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019 | 1/4 | SYR4 |
| Monobromoacetic Acid | 1.85 µg/L No EPA limit set Highest in the city: THUNDER HILLS HOME & UTILITY ASSOC. · 300 people · 2018 | 1/4 | SYR4 |
| Dibromoacetic Acid | 1.086 µg/L No EPA limit set Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2019 | 2/4 | SYR4 |
| Ethylbenzene | 0.5400 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2018 | 1/4 | SYR4 |
| Antimony, Total | 0.4000 µg/L 6.7% of the EPA limit 6 µg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2013 | 1/4 | SYR4 |
| Lead | 0.00050 mg/L 3.3% of the EPA limit 0.0150 mg/L Main supplier: PEOSTA WATER SUPPLY · 2,278 people · 2025
Highest in the city: 0.0124 mg/L — LOST CANYON MHP (PEOSTA) · 97 people · 2023 | 4/4 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Peosta
| Supplier | Population served |
|---|---|
| PEOSTA WATER SUPPLY | 2,278 |
| BURDS GREEN ACRES SUBDIVISION | 312 |
| THUNDER HILLS HOME & UTILITY ASSOC. | 300 |
| LOST CANYON MHP (PEOSTA) | 97 |
Frequently asked questions about Peosta tap water
Is Peosta tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Peosta. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Peosta?
4 public water suppliers report drinking-water monitoring for Peosta, Iowa to the EPA. Each is listed above with its population served.
What contaminants are in Peosta's water?
The contaminants EPA monitoring detected in Peosta include Fluoride, Copper, Nitrate, Barium, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.