What was found in Peoria'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 | 5027.5 µg/L 50% of the EPA limit 10000 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 3767.5 µg/L 38% of the EPA limit 10000 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2018 | 2/3 | SYR4 |
| Fluoride | 1150 µg/L 29% of the EPA limit 4000 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 2/3 | SYR4 |
| Copper | 1063 µg/L 82% of the EPA limit 1300 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2018 | 3/3 | SYR4 |
| Barium | 600 µg/L 30% of the EPA limit 2000 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 2/3 | SYR4 |
| TTHM | 62 µg/L 78% of the EPA limit 80 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 3/3 | SYR4 |
| Chloroform | 36.2 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 23.6 µg/L 39% of the EPA limit 60 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 3/3 | SYR4 |
| Lithium | 20.8 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2024 | 1/3 | UCMR-5 |
| Bromodichloromethane | 18.9 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 3/3 | SYR4 |
| Lead | 16.1 µg/L 107% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2018 | 3/3 | SYR4 |
| Chromium | 15.29 µg/L 15% of the EPA limit 100 µg/L Highest in the city: PLEASANT VALLEY PWD · 3,783 people · 2017 | 1/3 | SYR4 |
| Dichloroacetic Acid | 10.9 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 2/3 | SYR4 |
| Dibromochloromethane | 10.3 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 9.285 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 5.27 pCi/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2014 | 1/3 | SYR4 |
| Monochloroacetic Acid | 4.87 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 3.64 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 1/3 | SYR4 |
| Selenium | 3.59 µg/L 7.2% of the EPA limit 50 µg/L Highest in the city: PLEASANT VALLEY PWD · 3,783 people · 2017 | 1/3 | SYR4 |
| Dibromoacetic Acid | 2.635 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019
Highest in the city: 3.385 µg/L — PLEASANT VALLEY PWD · 3,783 people · 2019 | 3/3 | SYR4 |
| Arsenic | 2.9 µg/L 29% of the EPA limit 10 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 2/3 | SYR4 |
| Bromoform | 2.28 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019
Highest in the city: 2.604 µg/L — LIMESTONE-WALTERS PWD · 2,023 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.997 pCi/L 40% of the EPA limit 5 pCi/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2016 | 2/3 | SYR4 |
| Atrazine | 0.6700 µg/L 22% of the EPA limit 3 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 0.5000 µg/L 0% of the EPA limit 10000 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2018 | 1/3 | SYR4 |
| Antimony, Total | 0.4950 µg/L 8.3% of the EPA limit 6 µg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2019 | 1/3 | SYR4 |
| PFHXS | 0.0140 µg/L No EPA limit set Highest in the city: PLEASANT VALLEY PWD · 3,783 people · 2024 | 1/3 | UCMR-5 |
| PFBS | 0.0048 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2024
Highest in the city: 0.0110 µg/L — PLEASANT VALLEY PWD · 3,783 people · 2024 | 2/3 | UCMR-5 |
| Lead | 0.0090 mg/L 60% of the EPA limit 0.0150 mg/L Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2026 | 3/3 | LCR |
| Pfba | 0.0088 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2024 | 2/3 | UCMR-5 |
| Pfpea | 0.0075 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2024 | 1/3 | UCMR-5 |
| Pfhxa | 0.0074 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2024 | 1/3 | UCMR-5 |
| PFOS | 0.0065 µg/L No EPA limit set Main supplier: IL AMERICAN-PEORIA · 137,575 people · 2024 | 1/3 | 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 Peoria
| Supplier | Population served |
|---|---|
| IL AMERICAN-PEORIA | 137,575 |
| PLEASANT VALLEY PWD | 3,783 |
| LIMESTONE-WALTERS PWD | 2,023 |
Frequently asked questions about Peoria tap water
Is Peoria tap water safe to drink?
EPA testing detected 33 contaminants in the water serving Peoria. 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 Peoria?
3 public water suppliers report drinking-water monitoring for Peoria, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Peoria's water?
The contaminants EPA monitoring detected in Peoria 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.