What was found in Black River Falls's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 10000 µg/L 100% of the EPA limit 10000 µg/L | 9/9 | SYR4 |
| Nitrate-Nitrite | 8900 µg/L 89% of the EPA limit 10000 µg/L | 6/9 | SYR4 |
| Nitrite | 8400 µg/L 840% of the EPA limit, in the worst sample — 1000 µg/L | 1/9 | SYR4 |
| Fluoride | 5500 µg/L 138% of the EPA limit, in the worst sample — 4000 µg/L | 8/9 | SYR4 |
| Copper | 3040 µg/L 234% of the EPA limit, in the worst sample — 1300 µg/L | 9/9 | SYR4 |
| Barium | 176 µg/L 8.8% of the EPA limit 2000 µg/L | 9/9 | SYR4 |
| Lead | 110 µg/L 733% of the EPA limit, in the worst sample — 15 µg/L | 9/9 | SYR4 |
| TTHM | 29.32 µg/L 37% of the EPA limit 80 µg/L | 8/9 | SYR4 |
| Chloroform | 21 µg/L No EPA limit set | 3/9 | SYR4 |
| Total Haloacetic Acids (HAA5) | 19 µg/L 32% of the EPA limit 60 µg/L | 8/9 | SYR4 |
| Dichloroacetic Acid | 7.44 µg/L No EPA limit set | 3/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.8 pCi/L 39% of the EPA limit 15 pCi/L | 7/9 | SYR4 |
| Bromodichloromethane | 5.6 µg/L No EPA limit set | 3/9 | SYR4 |
| Combined Radium (-226 And -228) | 4.1 pCi/L 82% of the EPA limit 5 pCi/L | 8/9 | SYR4 |
| Dibromochloromethane | 3.9 µg/L No EPA limit set | 2/9 | SYR4 |
| Trichloroacetic Acid | 3.76 µg/L No EPA limit set | 3/9 | SYR4 |
| Monochloroacetic Acid | 3.07 µg/L No EPA limit set | 2/9 | SYR4 |
| Arsenic | 1.5 µg/L 15% of the EPA limit 10 µg/L | 2/9 | SYR4 |
| Mercury | 1.1 µg/L 55% of the EPA limit 2 µg/L | 1/9 | SYR4 |
| Selenium | 1 µg/L 2% of the EPA limit 50 µg/L | 1/9 | SYR4 |
| Bromoform | 0.6700 µg/L No EPA limit set | 1/9 | SYR4 |
| Dibromoacetic Acid | 0.4600 µg/L No EPA limit set | 1/9 | SYR4 |
| Beryllium, Total | 0.4200 µg/L 11% of the EPA limit 4 µg/L | 1/9 | SYR4 |
| Xylenes, Total | 0.1600 µg/L 0% of the EPA limit 10000 µg/L | 1/9 | SYR4 |
| Cadmium | 0.1300 µg/L 2.6% of the EPA limit 5 µg/L | 3/9 | SYR4 |
| Styrene | 0.1200 µg/L 0.1% of the EPA limit 100 µg/L | 1/9 | SYR4 |
| Lead | 0.0054 mg/L 36% of the EPA limit 0.0150 mg/L | 9/9 | LCR |
Water suppliers serving Black River Falls
| Supplier | Population served |
|---|---|
| SAND PILLOW | 5,230 |
| BLACK RIVER FALLS WATERWORKS | 3,608 |
| BROCKWAY SANITARY DIST 1 | 2,692 |
| CEX' HA CI | 2,002 |
| HO CHUNK VILLAGE | 196 |
| BLACK RIVER CORRECTIONAL CENTER | 163 |
| HO-CHUNK CHE-NUNK | 132 |
| INDIAN HEIGHTS | 126 |
| BLUE SPRUCE MOBILE HOME COMMUNITY | 80 |
Frequently asked questions about Black River Falls tap water
Is Black River Falls tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Black River 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 Black River Falls?
9 public water suppliers report drinking-water monitoring for Black River Falls, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Black River Falls's water?
The contaminants EPA monitoring detected in Black River Falls include Nitrate, Nitrate-Nitrite, Nitrite, Fluoride, Copper. The full list, with the highest level found 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.