What was found in Iola'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 | 1265 µg/L 13% of the EPA limit 10000 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019 | 2/5 | SYR4 |
| Fluoride | 871 µg/L 22% of the EPA limit 4000 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 921 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 2/5 | SYR4 |
| Chlorite | 803 µg/L 80% of the EPA limit 1000 µg/L Highest in the city: PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 1/5 | SYR4 |
| Copper | 80.8 µg/L 6.2% of the EPA limit 1300 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 752.5 µg/L — ALLEN CO RWD 6 · 45 people · 2019 | 5/5 | SYR4 |
| Barium | 16.65 µg/L 0.8% of the EPA limit 2000 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 99.65 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 2/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 23 µg/L 38% of the EPA limit 60 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 82.75 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| TTHM | 30.4 µg/L 38% of the EPA limit 80 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 73.1 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Dichloroacetic Acid | 14.2 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 51 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Chloroform | 23.25 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 48.05 µg/L — ALLEN CO RWD 6 · 45 people · 2019 | 5/5 | SYR4 |
| Trichloroacetic Acid | 2.7 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 26.65 µg/L — ALLEN CO RWD 4 · 52 people · 2019 | 5/5 | SYR4 |
| Bromodichloromethane | 7.04 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 25.1 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Bromate | 19.1 µg/L 191% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019 | 1/5 | SYR4 |
| Dibromochloromethane | 3.82 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 16 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Lead | 14.8 µg/L 99% of the EPA limit 15 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019 | 3/5 | SYR4 |
| Monochloroacetic Acid | 7.52 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 13.2 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Dibromoacetic Acid | 2.2 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 8.42 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Bromoform | 1.194 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 4.79 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Atrazine | 3.465 µg/L 116% of the EPA limit, at the 95th percentile of samples — 3 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 4.075 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 2/5 | SYR4 |
| Monobromoacetic Acid | 1.395 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2019
Highest in the city: 2.62 µg/L — PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 5/5 | SYR4 |
| Chromium | 2.065 µg/L 2.1% of the EPA limit 100 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019 | 2/5 | SYR4 |
| Selenium | 1.575 µg/L 3.2% of the EPA limit 50 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019 | 2/5 | SYR4 |
| Arsenic | 1.28 µg/L 13% of the EPA limit 10 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2019 | 2/5 | SYR4 |
| Carbon Tetrachloride | 0.8700 µg/L 17% of the EPA limit 5 µg/L Main supplier: IOLA, CITY OF · 5,343 people · 2017 | 2/5 | SYR4 |
| Combined Radium (-226 And -228) | 0.5000 pCi/L 10% of the EPA limit 5 pCi/L Main supplier: IOLA, CITY OF · 5,343 people · 2014 | 2/5 | SYR4 |
| Lasso | 0.2900 µg/L 14% of the EPA limit 2 µg/L Highest in the city: PUBLIC WHOLESALE WSD 5 · 1 people · 2019 | 1/5 | SYR4 |
| Lead | 0.0079 mg/L 53% of the EPA limit 0.0150 mg/L Main supplier: IOLA, CITY OF · 5,343 people · 2026 | 4/5 | LCR |
| 6:2 Fts | 0.0060 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2024 | 1/5 | UCMR-5 |
| Pfhxa | 0.0037 µg/L No EPA limit set Main supplier: IOLA, CITY OF · 5,343 people · 2024 | 1/5 | UCMR-5 |
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 Iola
| Supplier | Population served |
|---|---|
| IOLA, CITY OF | 5,343 |
| ALLEN CO RWD 15 | 135 |
| ALLEN CO RWD 4 | 52 |
| ALLEN CO RWD 6 | 45 |
| PUBLIC WHOLESALE WSD 5 | 1 |
Frequently asked questions about Iola tap water
Is Iola tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Iola. 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 Iola?
5 public water suppliers report drinking-water monitoring for Iola, Kansas to the EPA. Each is listed above with its population served.
What contaminants are in Iola's water?
The contaminants EPA monitoring detected in Iola include Nitrate, Fluoride, Chlorite, Copper, Barium. 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.