What was found in Warrensburg'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 |
|---|---|---|---|
| Copper | 660.3500000000001 µg/L 51% of the EPA limit 1300 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019
Highest in the city: 1120 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2018 | 3/3 | SYR4 |
| Fluoride | 719 µg/L 18% of the EPA limit 4000 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2017
Highest in the city: 770 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2016 | 3/3 | SYR4 |
| Lithium | 70.6 µg/L No EPA limit set Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2024
Highest in the city: 130 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2024 | 3/3 | UCMR-5 |
| Barium | 122.4 µg/L 6.1% of the EPA limit 2000 µg/L Highest in the city: JOHNSON COUNTY PWSD 3 · 4,700 people · 2017 | 2/3 | SYR4 |
| TTHM | 3.923999999999999 µg/L 4.9% of the EPA limit 80 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019
Highest in the city: 37.925 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 2/3 | SYR4 |
| Nitrate | 20 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 20 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 1.0550000000000002 µg/L No EPA limit set Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019
Highest in the city: 14.90999999999999 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 1.7199999999999995 µg/L No EPA limit set Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019
Highest in the city: 13.909999999999993 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 3/3 | SYR4 |
| Lead | 6.799999999999997 µg/L 45% of the EPA limit 15 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019
Highest in the city: 7.628999999999999 µg/L — JOHNSON COUNTY PWSD 3 · 4,700 people · 2018 | 3/3 | SYR4 |
| Bromoform | 1.225 µg/L No EPA limit set Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019
Highest in the city: 5.1739999999999995 µg/L — JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 5.0305 µg/L No EPA limit set Highest in the city: JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 1/3 | SYR4 |
| Chloroform | 2.586 µg/L No EPA limit set Highest in the city: JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 2.46 pCi/L 49% of the EPA limit 5 pCi/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2018 | 2/3 | SYR4 |
| Monochloroacetic Acid | 2.4 µg/L No EPA limit set Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.4 µg/L 4% of the EPA limit 60 µg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2019 | 1/3 | SYR4 |
| Chromium | 2.2585 µg/L 2.3% of the EPA limit 100 µg/L Highest in the city: JOHNSON COUNTY PWSD 3 · 4,700 people · 2017 | 1/3 | SYR4 |
| Xylenes, Total | 1.79 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: JOHNSON COUNTY PWSD 3 · 4,700 people · 2017 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.689 µg/L No EPA limit set Highest in the city: JOHNSON COUNTY PWSD 1 · 3,730 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 0.5900 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: JOHNSON COUNTY PWSD 3 · 4,700 people · 2017 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: MO AMERICAN WARRENSBURG · 18,500 people · 2025 | 3/3 | 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 Warrensburg
| Supplier | Population served |
|---|---|
| MO AMERICAN WARRENSBURG | 18,500 |
| JOHNSON COUNTY PWSD 3 | 4,700 |
| JOHNSON COUNTY PWSD 1 | 3,730 |
Frequently asked questions about Warrensburg tap water
Is Warrensburg tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Warrensburg. 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 Warrensburg?
3 public water suppliers report drinking-water monitoring for Warrensburg, Missouri to the EPA. Each is listed above with its population served.
What contaminants are in Warrensburg's water?
The contaminants EPA monitoring detected in Warrensburg include Copper, Fluoride, Lithium, Barium, TTHM. 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.