What was found in Wheaton'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 | 942.5 µg/L 24% of the EPA limit 4000 µg/L Highest in the city: POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2018 | 1/3 | SYR4 |
| Copper | 165.2 µg/L 13% of the EPA limit 1300 µg/L Main supplier: WHEATON · 53,970 people · 2017
Highest in the city: 884.8 µg/L — POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2017 | 3/3 | SYR4 |
| Barium | 73.58 µg/L 3.7% of the EPA limit 2000 µg/L Highest in the city: POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2018 | 1/3 | SYR4 |
| TTHM | 55.4 µg/L 69% of the EPA limit 80 µg/L Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 58.98 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 3/3 | SYR4 |
| Nitrate | 50 µg/L 0.5% of the EPA limit 10000 µg/L Highest in the city: POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 50 µg/L 0.5% of the EPA limit 10000 µg/L Highest in the city: POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2015 | 1/3 | SYR4 |
| Chloroform | 33.6 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 36.72 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.7 µg/L 41% of the EPA limit 60 µg/L Main supplier: WHEATON · 53,970 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 14.7 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 15.64 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 12.8 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 14.3 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 2/3 | SYR4 |
| Lead | 2.835 µg/L 19% of the EPA limit 15 µg/L Main supplier: WHEATON · 53,970 people · 2017
Highest in the city: 11.24 µg/L — POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2017 | 2/3 | SYR4 |
| Trichloroacetic Acid | 10.9 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 10.94 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 6.97 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 7.56 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 4.298 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 5.5 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 2.19 pCi/L 44% of the EPA limit 5 pCi/L Highest in the city: POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2014 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.35 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019
Highest in the city: 1.88 µg/L — IL AMERICAN-LIBERTY RIDGE EAST · 320 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 1.685 µg/L No EPA limit set Main supplier: WHEATON · 53,970 people · 2019 | 2/3 | SYR4 |
| Arsenic | 0.6660 µg/L 6.7% of the EPA limit 10 µg/L Highest in the city: POLO DR AND SADDLE RD SUBDIVISION · 93 people · 2018 | 1/3 | SYR4 |
| Lead | 0.0015 mg/L 10% of the EPA limit 0.0150 mg/L Main supplier: WHEATON · 53,970 people · 2025
Highest in the city: 0.0100 mg/L — POLO DR AND SADDLE RD SUBDIVISION · 93 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 Wheaton
| Supplier | Population served |
|---|---|
| WHEATON | 53,970 |
| IL AMERICAN-LIBERTY RIDGE EAST | 320 |
| POLO DR AND SADDLE RD SUBDIVISION | 93 |
Frequently asked questions about Wheaton tap water
Is Wheaton tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Wheaton. 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 Wheaton?
3 public water suppliers report drinking-water monitoring for Wheaton, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Wheaton's water?
The contaminants EPA monitoring detected in Wheaton include Fluoride, Copper, Barium, TTHM, Nitrate. 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.