What was found in Harrisburg'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 | 291.4999999999999 µg/L 22% of the EPA limit 1300 µg/L Main supplier: HARRISBURG · 8,524 people · 2017 | 4/4 | SYR4 |
| TTHM | 25.491 µg/L 32% of the EPA limit 80 µg/L Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 87.45400000000001 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Chloroform | 12.9635 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 40.3105 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.309999999999999 µg/L 11% of the EPA limit 60 µg/L Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 32.66499999999999 µg/L — PROSPECT WATER DISTRICT · 1,140 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 7.684249999999999 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 26.39550000000001 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 3.8729999999999998 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 26.054999999999996 µg/L — PROSPECT WATER DISTRICT · 1,140 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 4.751 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 18.99 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 2.9575 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 10.42 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 5.452500000000001 µg/L No EPA limit set Highest in the city: PROSPECT WATER DISTRICT · 1,140 people · 2019 | 2/4 | SYR4 |
| Bromoform | 2.1079999999999997 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 4.742499999999999 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 4.116999999999999 µg/L No EPA limit set Highest in the city: MITCHELLSVILLE PWD · 1,970 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 1.52 µg/L No EPA limit set Main supplier: HARRISBURG · 8,524 people · 2019
Highest in the city: 4.045 µg/L — MITCHELLSVILLE PWD · 1,970 people · 2019 | 4/4 | SYR4 |
| Lead | 1.16 µg/L 7.7% of the EPA limit 15 µg/L Highest in the city: LIBERTY-LEDFORD PWD · 1,255 people · 2019 | 2/4 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: HARRISBURG · 8,524 people · 2025 | 4/4 | LCR |
Water suppliers serving Harrisburg
| Supplier | Population served |
|---|---|
| HARRISBURG | 8,524 |
| MITCHELLSVILLE PWD | 1,970 |
| LIBERTY-LEDFORD PWD | 1,255 |
| PROSPECT WATER DISTRICT | 1,140 |
Frequently asked questions about Harrisburg tap water
Is Harrisburg tap water safe to drink?
EPA testing detected 14 contaminants in the water serving Harrisburg. 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 Harrisburg?
4 public water suppliers report drinking-water monitoring for Harrisburg, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Harrisburg's water?
The contaminants EPA monitoring detected in Harrisburg include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane. 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.