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Tap water quality report

Barnhart, MO

EPA monitoring detected 12 contaminants across the 1 water supplier serving Barnhart. 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.

1
water supplier
37,000
people served
12
contaminants found
Missouri rankings Lead in Missouri PFAS in Missouri

What was found in Barnhart'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
TTHM
79.505 µg/L 99%
of the EPA limit 80 µg/L
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Chloroform
75.325 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
43.82 µg/L 73%
of the EPA limit 60 µg/L
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Dichloroacetic Acid
39.1 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Copper
20.42 µg/L 1.6%
of the EPA limit 1300 µg/L
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Lead
12.408 µg/L 83%
of the EPA limit 15 µg/L
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Monochloroacetic Acid
10.784 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Bromodichloromethane
9.5795 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Trichloroacetic Acid
5.1035 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Dibromochloromethane
3.076 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.1695 µg/L
No EPA limit set
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: JEFFERSON CO CONS PWSD C 1 · 37,000 people · 2025
1/1 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 Barnhart

SupplierPopulation served
JEFFERSON CO CONS PWSD C 1 37,000

Frequently asked questions about Barnhart tap water

Is Barnhart tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Barnhart. 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 Barnhart?

1 public water supplier report drinking-water monitoring for Barnhart, Missouri to the EPA. Each is listed above with its population served.

What contaminants are in Barnhart's water?

The contaminants EPA monitoring detected in Barnhart include TTHM, Chloroform, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, Copper. 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.