What was found in Machesney 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 |
|---|---|---|---|
| Nitrate | 4900 µg/L 49% of the EPA limit 10000 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2019
Highest in the city: 5020 µg/L — RAINBOW LANE MHP · 83 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 4870 µg/L 49% of the EPA limit 10000 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2018 | 2/2 | SYR4 |
| Fluoride | 1239 µg/L 31% of the EPA limit 4000 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2018 | 2/2 | SYR4 |
| Copper | 582.5 µg/L 45% of the EPA limit 1300 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2017 | 2/2 | SYR4 |
| Barium | 138 µg/L 6.9% of the EPA limit 2000 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2018 | 2/2 | SYR4 |
| TTHM | 16.981 µg/L 21% of the EPA limit 80 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 2/2 | SYR4 |
| Lithium | 9.33 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 5.093 µg/L 8.5% of the EPA limit 60 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2019
Highest in the city: 8.758 µg/L — RAINBOW LANE MHP · 83 people · 2019 | 2/2 | SYR4 |
| Chromium | 6.7 µg/L 6.7% of the EPA limit 100 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2018 | 1/2 | SYR4 |
| Chloroform | 5.6473 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019
Highest in the city: 6.6285 µg/L — RAINBOW LANE MHP · 83 people · 2019 | 2/2 | SYR4 |
| Lead | 5.62 µg/L 37% of the EPA limit 15 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2017 | 2/2 | SYR4 |
| Bromodichloromethane | 5.258 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 4.493 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 2/2 | SYR4 |
| Selenium | 3.92 µg/L 7.8% of the EPA limit 50 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2018 | 1/2 | SYR4 |
| Trichloroacetic Acid | 1.26 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019
Highest in the city: 3.8525 µg/L — RAINBOW LANE MHP · 83 people · 2019 | 2/2 | SYR4 |
| Bromoform | 3.184 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 3.0595 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 2.2 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.07 µg/L No EPA limit set Highest in the city: RAINBOW LANE MHP · 83 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.942 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 2/2 | SYR4 |
| Trichloroethylene | 1.895 µg/L 38% of the EPA limit 5 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 1/2 | SYR4 |
| Arsenic | 1.575 µg/L 16% of the EPA limit 10 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.3320 pCi/L 6.6% of the EPA limit 5 pCi/L Main supplier: NORTH PARK PWD · 35,580 people · 2015
Highest in the city: 1.522 pCi/L — RAINBOW LANE MHP · 83 people · 2015 | 2/2 | SYR4 |
| Tetrachloroethylene | 1.37 µg/L 27% of the EPA limit 5 µg/L Main supplier: NORTH PARK PWD · 35,580 people · 2019 | 1/2 | SYR4 |
| PFHXS | 0.0182 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| PFOS | 0.0073 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| Pfba | 0.0070 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| PFOA | 0.0062 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| PFBS | 0.0054 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0053 mg/L 35% of the EPA limit 0.0150 mg/L Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 2/2 | LCR |
| Pfhxa | 0.0047 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
| Pfpea | 0.0042 µg/L No EPA limit set Main supplier: NORTH PARK PWD · 35,580 people · 2025 | 1/2 | UCMR-5 |
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 Machesney Park
| Supplier | Population served |
|---|---|
| NORTH PARK PWD | 35,580 |
| RAINBOW LANE MHP | 83 |
Frequently asked questions about Machesney Park tap water
Is Machesney Park tap water safe to drink?
EPA testing detected 32 contaminants in the water serving Machesney 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 Machesney Park?
2 public water suppliers report drinking-water monitoring for Machesney Park, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Machesney Park's water?
The contaminants EPA monitoring detected in Machesney Park include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.