What was found in Wright City'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 |
|---|---|---|---|
| Fluoride | 1493 µg/L 37% of the EPA limit 4000 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2017
Highest in the city: 1550 µg/L — GLENBROOK ESTATES · 100 people · 2017 | 4/5 | SYR4 |
| Nitrate-Nitrite | 511.9999999999996 µg/L 5.1% of the EPA limit 10000 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019
Highest in the city: 520 µg/L — VALLEY LAKE ESTATES · 40 people · 2019 | 4/5 | SYR4 |
| Copper | 187 µg/L 14% of the EPA limit 1300 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 4/5 | SYR4 |
| Barium | 63.38999999999999 µg/L 3.2% of the EPA limit 2000 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2017
Highest in the city: 71.87 µg/L — PLEASANT OAK MHP · 150 people · 2019 | 4/5 | SYR4 |
| Lithium | 62.7 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2025 | 1/5 | UCMR-5 |
| TTHM | 23.6 µg/L 30% of the EPA limit 80 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Bromodichloromethane | 20.64 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Gross Alpha, Excl. Radon And U | 19.68 pCi/L 131% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2014 | 2/5 | SYR4 |
| Chloroform | 14.636 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Dibromochloromethane | 13.189999999999998 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Chromium | 9.3105 µg/L 9.3% of the EPA limit 100 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2017
Highest in the city: 10.5245 µg/L — GLENBROOK ESTATES · 100 people · 2017 | 3/5 | SYR4 |
| Lead | 8.924499999999995 µg/L 59% of the EPA limit 15 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 4/5 | SYR4 |
| Combined Radium (-226 And -228) | 4.1 pCi/L 82% of the EPA limit 5 pCi/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 4/5 | SYR4 |
| Xylenes, Total | 3.442 µg/L 0% of the EPA limit 10000 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2017 | 1/5 | SYR4 |
| Bromoform | 3.192 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.09 µg/L 5.1% of the EPA limit 60 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| 2,4-D | 2.48 µg/L 3.5% of the EPA limit 70 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2018 | 1/5 | SYR4 |
| Arsenic | 2.38 µg/L 24% of the EPA limit 10 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2017 | 1/5 | SYR4 |
| Dibromoacetic Acid | 2.07 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Trichloroacetic Acid | 1.02 µg/L No EPA limit set Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2019 | 1/5 | SYR4 |
| Ethylbenzene | 0.8600 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2017 | 1/5 | SYR4 |
| Lead | 0.0011 mg/L 7.6% of the EPA limit 0.0150 mg/L Main supplier: ST CHARLES CO PWSD #2 WRIGHT CITY · 3,550 people · 2025
Highest in the city: 0.0097 mg/L — GLENBROOK ESTATES · 100 people · 2024 | 5/5 | 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 Wright City
| Supplier | Population served |
|---|---|
| ST CHARLES CO PWSD #2 WRIGHT CITY | 3,550 |
| PLEASANT OAK MHP | 150 |
| GLENBROOK ESTATES | 100 |
| VALLEY LAKE ESTATES | 40 |
| GREAT OAK SUBDIVISION | 30 |
Frequently asked questions about Wright City tap water
Is Wright City tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Wright City. 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 Wright City?
5 public water suppliers report drinking-water monitoring for Wright City, Missouri to the EPA. Each is listed above with its population served.
What contaminants are in Wright City's water?
The contaminants EPA monitoring detected in Wright City include Fluoride, Nitrate-Nitrite, Copper, Barium, Lithium. 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.