What was found in Osceola'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 |
|---|---|---|---|
| Nitrate | 1300 µg/L 13% of the EPA limit 10000 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019 | 1/2 | SYR4 |
| Chlorite | 880 µg/L 88% of the EPA limit 1000 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019 | 1/2 | SYR4 |
| Copper | 415 µg/L 32% of the EPA limit 1300 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2018
Highest in the city: 675.9999999999992 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2018 | 2/2 | SYR4 |
| Fluoride | 600 µg/L 15% of the EPA limit 4000 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2014 | 1/2 | SYR4 |
| Nitrite | 470 µg/L 47% of the EPA limit 1000 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019 | 1/2 | SYR4 |
| TTHM | 43.15 µg/L 54% of the EPA limit 80 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 71.15 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 51.3 µg/L 86% of the EPA limit 60 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 64.79999999999995 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Barium | 60 µg/L 3% of the EPA limit 2000 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2014 | 1/2 | SYR4 |
| Chloroform | 35 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 56.89999999999999 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 29.15 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 37.89999999999999 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 17.15 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 22 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Lead | 11 µg/L 73% of the EPA limit 15 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2018 | 2/2 | SYR4 |
| Bromodichloromethane | 7.93 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 10.149999999999999 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.149999999999999 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 6 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 2.275 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019
Highest in the city: 2.5799999999999996 µg/L — SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 2/2 | SYR4 |
| P-Dichlorobenzene | 1.18 µg/L 1.6% of the EPA limit 75 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2018 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1 µg/L 17% of the EPA limit 6 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2018 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Highest in the city: SIRWA #3 (OSCEOLA) · 4,080 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.9400 µg/L 31% of the EPA limit 3 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.4900 µg/L 12% of the EPA limit 4 µg/L Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2018 | 1/2 | SYR4 |
| Pfba | 0.0093 µg/L No EPA limit set Main supplier: OSCEOLA WATER WORKS · 5,503 people · 2024 | 2/2 | UCMR-5 |
| Lead | 0.0060 mg/L 40% of the EPA limit 0.0150 mg/L Main supplier: OSCEOLA WATER WORKS · 5,503 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.
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 Osceola
| Supplier | Population served |
|---|---|
| OSCEOLA WATER WORKS | 5,503 |
| SIRWA #3 (OSCEOLA) | 4,080 |
Frequently asked questions about Osceola tap water
Is Osceola tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Osceola. 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 Osceola?
2 public water suppliers report drinking-water monitoring for Osceola, Iowa to the EPA. Each is listed above with its population served.
What contaminants are in Osceola's water?
The contaminants EPA monitoring detected in Osceola include Nitrate, Chlorite, Copper, Fluoride, Nitrite. 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.