What was found in Chippewa Falls'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 | 8170 µg/L 82% of the EPA limit 10000 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 9355 µg/L — HOFFMANNS WISSOTA COURT · 126 people · 2019 | 4/4 | SYR4 |
| Nitrate-Nitrite | 6785 µg/L 68% of the EPA limit 10000 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2017
Highest in the city: 8680 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 4/4 | SYR4 |
| Copper | 160.5 µg/L 12% of the EPA limit 1300 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2017
Highest in the city: 587 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2017 | 4/4 | SYR4 |
| Barium | 20.85 µg/L 1% of the EPA limit 2000 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2017
Highest in the city: 124.5 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 4/4 | SYR4 |
| Fluoride | 30 µg/L 0.8% of the EPA limit 4000 µg/L Highest in the city: LAFAYETTE COURT · 78 people · 2018 | 1/4 | SYR4 |
| Lead | 5 µg/L 33% of the EPA limit 15 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2017
Highest in the city: 19.625 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2017 | 4/4 | SYR4 |
| TTHM | 13.615 µg/L 17% of the EPA limit 80 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 18.2 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Chloroform | 6.575 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 9.51 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7.485 µg/L 12% of the EPA limit 60 µg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019 | 2/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.049 pCi/L 47% of the EPA limit 15 pCi/L Highest in the city: LAFAYETTE COURT · 78 people · 2015 | 2/4 | SYR4 |
| Bromodichloromethane | 4.55 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 5.54 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Dichloroacetic Acid | 4.78 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019 | 2/4 | SYR4 |
| Dibromochloromethane | 2.875 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 4.76 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.4925 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2014
Highest in the city: 4.3056 pCi/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 4/4 | SYR4 |
| Bromoform | 0.7120 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 2.855 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Trichloroacetic Acid | 2.22 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 1.235 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 1.93 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Chromium | 1.885 µg/L 1.9% of the EPA limit 100 µg/L Highest in the city: HOFFMANNS WISSOTA COURT · 126 people · 2018 | 1/4 | SYR4 |
| Monobromoacetic Acid | 0.5285 µg/L No EPA limit set Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2019
Highest in the city: 1.04 µg/L — LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 2/4 | SYR4 |
| Monochloroacetic Acid | 1.04 µg/L No EPA limit set Highest in the city: LAKE HALLIE WATERWORKS VILLAGE OF · 6,701 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0022 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: CHIPPEWA FALLS WATERWORKS · 13,375 people · 2023 | 4/4 | 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 Chippewa Falls
| Supplier | Population served |
|---|---|
| CHIPPEWA FALLS WATERWORKS | 13,375 |
| LAKE HALLIE WATERWORKS VILLAGE OF | 6,701 |
| HOFFMANNS WISSOTA COURT | 126 |
| LAFAYETTE COURT | 78 |
Frequently asked questions about Chippewa Falls tap water
Is Chippewa Falls tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Chippewa Falls. 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 Chippewa Falls?
4 public water suppliers report drinking-water monitoring for Chippewa Falls, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Chippewa Falls's water?
The contaminants EPA monitoring detected in Chippewa Falls include Nitrate, Nitrate-Nitrite, Copper, Barium, Fluoride. 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.