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Tap water quality report

Winfield, MO

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Winfield. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
15,489
people served
17
contaminants found
Missouri rankings Lead in Missouri PFAS in Missouri

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.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
4100 µg/L 102%
of the EPA limit, at the 95th percentile of samples — 4000 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Copper
122 µg/L 9.4%
of the EPA limit 1300 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
Highest in the city: 228.15 µg/L — WINFIELD PWS · 1,489 people · 2019
2/2 SYR4
Lithium
132 µg/L
No EPA limit set
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2024
1/2 UCMR-5
Barium
32.49 µg/L 1.6%
of the EPA limit 2000 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Nitrate-Nitrite
32 µg/L 0.3%
of the EPA limit 10000 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
TTHM
5.403 µg/L 6.8%
of the EPA limit 80 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
Highest in the city: 14.34 µg/L — WINFIELD PWS · 1,489 people · 2019
2/2 SYR4
Selenium
12.2285 µg/L 24%
of the EPA limit 50 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Bromoform
2.586 µg/L
No EPA limit set
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
Highest in the city: 10.011 µg/L — WINFIELD PWS · 1,489 people · 2019
2/2 SYR4
Lead
8.727 µg/L 58%
of the EPA limit 15 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
2/2 SYR4
Chromium
7.32 µg/L 7.3%
of the EPA limit 100 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
4.1 pCi/L 82%
of the EPA limit 5 pCi/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Dibromochloromethane
1.836 µg/L
No EPA limit set
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
Highest in the city: 3.912 µg/L — WINFIELD PWS · 1,489 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.02 µg/L
No EPA limit set
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
Highest in the city: 2.692 µg/L — WINFIELD PWS · 1,489 people · 2019
2/2 SYR4
Arsenic
2.184 µg/L 22%
of the EPA limit 10 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Bromodichloromethane
0.8560 µg/L
No EPA limit set
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
Highest in the city: 1.171 µg/L — WINFIELD PWS · 1,489 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
1.02 µg/L 1.7%
of the EPA limit 60 µg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 people · 2019
1/2 SYR4
Lead
0.0035 mg/L 23%
of the EPA limit 0.0150 mg/L
Main supplier: LINCOLN COUNTY PWSD 1 · 14,000 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 Winfield

SupplierPopulation served
LINCOLN COUNTY PWSD 1 14,000
WINFIELD PWS 1,489

Frequently asked questions about Winfield tap water

Is Winfield tap water safe to drink?

EPA testing detected 17 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?

2 public water suppliers report drinking-water monitoring for Winfield, Missouri 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 Fluoride, Copper, Lithium, Barium, Nitrate-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.