What was found in Highland Park'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 | 1200.5 µg/L 30% of the EPA limit 4000 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Nitrate | 530 µg/L 5.3% of the EPA limit 10000 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 523 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2018 | 1/1 | SYR4 |
| Copper | 317.3 µg/L 24% of the EPA limit 1300 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| TTHM | 51.4 µg/L 64% of the EPA limit 80 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Chloroform | 33.81 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.78 µg/L 41% of the EPA limit 60 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Barium | 23.6 µg/L 1.2% of the EPA limit 2000 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Lead | 19.3 µg/L 129% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 15.15 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 12.15 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 8.218 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 7.809 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 5.88575 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 4.886 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.888 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.8725 µg/L No EPA limit set Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Arsenic | 1.595 µg/L 16% of the EPA limit 10 µg/L Main supplier: HIGHLAND PARK · 30,176 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0110 mg/L 73% of the EPA limit 0.0150 mg/L Main supplier: HIGHLAND PARK · 30,176 people · 2025 | 1/1 | LCR |
Water suppliers serving Highland Park
| Supplier | Population served |
|---|---|
| HIGHLAND PARK | 30,176 |
Frequently asked questions about Highland Park tap water
Is Highland Park tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Highland Park. 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 Highland Park?
1 public water supplier report drinking-water monitoring for Highland Park, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Highland Park's water?
The contaminants EPA monitoring detected in Highland Park include Fluoride, Nitrate, Nitrate-Nitrite, Copper, 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.