What was found in Chillicothe'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-Nitrite | 5030 µg/L 50% of the EPA limit 10000 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 5520 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2018 | 4/4 | SYR4 |
| Nitrate | 4764.999999999999 µg/L 48% of the EPA limit 10000 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 5400 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2019 | 4/4 | SYR4 |
| Fluoride | 1058.9999999999995 µg/L 26% of the EPA limit 4000 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 2935 µg/L — BUFFALO HOLLOW FARMS WATER ASSOC · 45 people · 2019 | 4/4 | SYR4 |
| Copper | 143.4999999999998 µg/L 11% of the EPA limit 1300 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2017
Highest in the city: 360.99999999999994 µg/L — BUFFALO HOLLOW FARMS WATER ASSOC · 45 people · 2019 | 4/4 | SYR4 |
| Barium | 68.6 µg/L 3.4% of the EPA limit 2000 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2019 | 4/4 | SYR4 |
| Selenium | 2.9 µg/L 5.8% of the EPA limit 50 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 35.4 µg/L — SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2019 | 3/4 | SYR4 |
| Chromium | 27.08 µg/L 27% of the EPA limit 100 µg/L Highest in the city: SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2019 | 2/4 | SYR4 |
| TTHM | 3.4587999999999997 µg/L 4.3% of the EPA limit 80 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 17.471000000000004 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2017 | 4/4 | SYR4 |
| Lead | 7.789999999999997 µg/L 52% of the EPA limit 15 µg/L Main supplier: CHILLICOTHE · 6,660 people · 2017
Highest in the city: 10.399999999999999 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2019 | 4/4 | SYR4 |
| Arsenic | 8.075 µg/L 81% of the EPA limit 10 µg/L Highest in the city: SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2019 | 3/4 | SYR4 |
| Chloroform | 0.5802 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 5.655950000000001 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2017 | 2/4 | SYR4 |
| Bromodichloromethane | 0.9291 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 5.283149999999999 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2017 | 2/4 | SYR4 |
| Dibromochloromethane | 2.500499999999999 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 5.0232 µg/L — FAWN HILLS SUBDIVISION · 183 people · 2017 | 3/4 | SYR4 |
| Bromoform | 0.9441 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 4.9186 µg/L — SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2017 | 4/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.2559 pCi/L 25% of the EPA limit 5 pCi/L Main supplier: CHILLICOTHE · 6,660 people · 2019
Highest in the city: 3.952 pCi/L — SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2017 | 4/4 | SYR4 |
| Dibromoacetic Acid | 2.085 µg/L No EPA limit set Highest in the city: SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2017 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.085 µg/L 3.5% of the EPA limit 60 µg/L Highest in the city: SANTA FE ESTATES WATER ASSOCIATION · 68 people · 2017 | 1/4 | SYR4 |
| 6:2 Fts | 0.0050 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2024 | 1/4 | UCMR-5 |
| Pfpea | 0.0044 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2024 | 1/4 | UCMR-5 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: CHILLICOTHE · 6,660 people · 2025
Highest in the city: 0.0038 mg/L — BUFFALO HOLLOW FARMS WATER ASSOC · 45 people · 2022 | 4/4 | LCR |
| Pfhxa | 0.0034 µg/L No EPA limit set Main supplier: CHILLICOTHE · 6,660 people · 2024 | 1/4 | 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 Chillicothe
| Supplier | Population served |
|---|---|
| CHILLICOTHE | 6,660 |
| FAWN HILLS SUBDIVISION | 183 |
| SANTA FE ESTATES WATER ASSOCIATION | 68 |
| BUFFALO HOLLOW FARMS WATER ASSOC | 45 |
Frequently asked questions about Chillicothe tap water
Is Chillicothe tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Chillicothe. 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 Chillicothe?
4 public water suppliers report drinking-water monitoring for Chillicothe, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Chillicothe's water?
The contaminants EPA monitoring detected in Chillicothe include Nitrate-Nitrite, Nitrate, 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.