What was found in Chilton'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 | 6750 µg/L 68% of the EPA limit 10000 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 6100 µg/L 61% of the EPA limit 10000 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 1/2 | SYR4 |
| Copper | 1100 µg/L 85% of the EPA limit 1300 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 2/2 | SYR4 |
| Fluoride | 860 µg/L 22% of the EPA limit 4000 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Barium | 74.3 µg/L 3.7% of the EPA limit 2000 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 2/2 | SYR4 |
| Nitrite | 39 µg/L 3.9% of the EPA limit 1000 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 1/2 | SYR4 |
| Cyanide | 19 µg/L 9.5% of the EPA limit 200 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2014 | 1/2 | SYR4 |
| TTHM | 18.6 µg/L 23% of the EPA limit 80 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Lead | 8.77 µg/L 58% of the EPA limit 15 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 1/2 | SYR4 |
| Chloroform | 6.705 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 6.08 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 4.6 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.776 µg/L 4.6% of the EPA limit 60 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 2.16 pCi/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2013
Highest in the city: 2.4 pCi/L — LAKEVIEW ESTATES MHP · 112 people · 2018 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.74333 pCi/L 12% of the EPA limit 15 pCi/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2014
Highest in the city: 2 pCi/L — LAKEVIEW ESTATES MHP · 112 people · 2018 | 2/2 | SYR4 |
| Arsenic | 1.9 µg/L 19% of the EPA limit 10 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 1/2 | SYR4 |
| Bromoform | 1.175 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 1.0835 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.0685 pCi/L 21% of the EPA limit 5 pCi/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2014 | 2/2 | SYR4 |
| Trichloroacetic Acid | 0.9850 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 0.8830 µg/L 2.9% of the EPA limit 30 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2014 | 1/2 | SYR4 |
| Dibromoacetic Acid | 0.8600 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 0.2200 µg/L No EPA limit set Main supplier: CHILTON WATERWORKS · 4,191 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.2200 µg/L 11% of the EPA limit 2 µg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2017 | 1/2 | SYR4 |
| Lead | 0.0130 mg/L 87% of the EPA limit 0.0150 mg/L Main supplier: CHILTON WATERWORKS · 4,191 people · 2023 | 2/2 | LCR |
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 Chilton
| Supplier | Population served |
|---|---|
| CHILTON WATERWORKS | 4,191 |
| LAKEVIEW ESTATES MHP | 112 |
Frequently asked questions about Chilton tap water
Is Chilton tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Chilton. 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 Chilton?
2 public water suppliers report drinking-water monitoring for Chilton, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Chilton's water?
The contaminants EPA monitoring detected in Chilton include Nitrate, Nitrate-Nitrite, Copper, Fluoride, 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.