What was found in Winfield'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 | 395.5 µg/L 4% of the EPA limit 10000 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Copper | 290 µg/L 22% of the EPA limit 1300 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 4/4 | SYR4 |
| Fluoride | 252 µg/L 6.3% of the EPA limit 4000 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| TTHM | 4.15 µg/L 5.2% of the EPA limit 80 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 128 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 3/4 | SYR4 |
| Barium | 95 µg/L 4.8% of the EPA limit 2000 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Chloroform | 2.285 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 82 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 11 µg/L 18% of the EPA limit 60 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 40.6 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 0.8280 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 27.9 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 3/4 | SYR4 |
| Trichloroacetic Acid | 1.3295 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 23 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 3/4 | SYR4 |
| Dichloroacetic Acid | 6.67 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 17 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 0.5200 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 12.36 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 6.005 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 8.73 µg/L — COWLEY CO RWD 4 · 500 people · 2019 | 4/4 | SYR4 |
| Bromate | 8.595 µg/L 86% of the EPA limit 10 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Lead | 6.31 µg/L 42% of the EPA limit 15 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 1.21 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019
Highest in the city: 2.565 µg/L — COWLEY CO RWD 2 · 600 people · 2019 | 4/4 | SYR4 |
| Selenium | 1.68 µg/L 3.4% of the EPA limit 50 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Monobromoacetic Acid | 1.495 µg/L No EPA limit set Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 2/4 | SYR4 |
| Chromium | 1.48 µg/L 1.5% of the EPA limit 100 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Arsenic | 1.38 µg/L 14% of the EPA limit 10 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Bromoform | 1.135 µg/L No EPA limit set Highest in the city: COWLEY CO RWD 2 · 600 people · 2019 | 1/4 | SYR4 |
| Carbon Tetrachloride | 0.6295 µg/L 13% of the EPA limit 5 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2017 | 1/4 | SYR4 |
| Atrazine | 0.3760 µg/L 13% of the EPA limit 3 µg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.1000 pCi/L 2% of the EPA limit 5 pCi/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2015 | 1/4 | SYR4 |
| Lead | 0.0032 mg/L 21% of the EPA limit 0.0150 mg/L Main supplier: WINFIELD, CITY OF · 11,726 people · 2024 | 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 Winfield
| Supplier | Population served |
|---|---|
| WINFIELD, CITY OF | 11,726 |
| COWLEY CO RWD 2 | 600 |
| COWLEY CO RWD 4 | 500 |
| COWLEY CO RWD 8 | 50 |
Frequently asked questions about Winfield tap water
Is Winfield tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Winfield. 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 Winfield?
4 public water suppliers report drinking-water monitoring for Winfield, Kansas to the EPA. Each is listed above with its population served.
What contaminants are in Winfield's water?
The contaminants EPA monitoring detected in Winfield include Nitrate, Copper, Fluoride, TTHM, 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.