What was found in Vandalia'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 | 1400 µg/L 14% of the EPA limit 10000 µg/L Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Fluoride | 1053 µg/L 26% of the EPA limit 4000 µg/L Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Copper | 338.9999999999999 µg/L 26% of the EPA limit 1300 µg/L Main supplier: VANDALIA · 7,616 people · 2017 | 2/3 | SYR4 |
| TTHM | 80.574 µg/L 101% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 107 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Chloroform | 68.35599999999998 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 94 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 55.41999999999998 µg/L 92% of the EPA limit 60 µg/L Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 77.59999999999991 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 27.139999999999993 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 44.349999999999994 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 31.7 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 40.13999999999998 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Barium | 35.949999999999996 µg/L 1.8% of the EPA limit 2000 µg/L Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Lead | 9.059999999999993 µg/L 60% of the EPA limit 15 µg/L Main supplier: VANDALIA · 7,616 people · 2017
Highest in the city: 15.699999999999964 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2018 | 2/3 | SYR4 |
| Bromodichloromethane | 12.659999999999998 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 8.7 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 3.1799999999999997 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 3.5 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 2.252 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019
Highest in the city: 2.6515999999999953 µg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 2.37 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Arsenic | 2.2249999999999996 µg/L 22% of the EPA limit 10 µg/L Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Bromoform | 2.0089499999999996 µg/L No EPA limit set Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Simazine | 0.9000 µg/L 23% of the EPA limit 4 µg/L Main supplier: VANDALIA · 7,616 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.8190 pCi/L 16% of the EPA limit 5 pCi/L Main supplier: VANDALIA · 7,616 people · 2014 | 1/3 | SYR4 |
| Lead | 0.0033 mg/L 22% of the EPA limit 0.0150 mg/L Main supplier: VANDALIA · 7,616 people · 2026
Highest in the city: 0.0150 mg/L — VANDALIA CORRECTIONAL CENTER · 700 people · 2021 | 2/3 | 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 Vandalia
| Supplier | Population served |
|---|---|
| VANDALIA | 7,616 |
| VANDALIA CORRECTIONAL CENTER | 700 |
| KASKASKIA SPRINGS WATER CO. | 1 |
Frequently asked questions about Vandalia tap water
Is Vandalia tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Vandalia. 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 Vandalia?
3 public water suppliers report drinking-water monitoring for Vandalia, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Vandalia's water?
The contaminants EPA monitoring detected in Vandalia include Nitrate, Fluoride, Copper, TTHM, Chloroform. 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.