What was found in La Crosse'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 | 5200 µg/L 52% of the EPA limit 10000 µg/L | 11/11 | SYR4 |
| Nitrate-Nitrite | 5150 µg/L 52% of the EPA limit 10000 µg/L | 11/11 | SYR4 |
| Fluoride | 1770 µg/L 44% of the EPA limit 4000 µg/L | 11/11 | SYR4 |
| Copper | 1220 µg/L 94% of the EPA limit 1300 µg/L | 11/11 | SYR4 |
| Barium | 191 µg/L 9.6% of the EPA limit 2000 µg/L | 11/11 | SYR4 |
| TTHM | 40.891 µg/L 51% of the EPA limit 80 µg/L | 5/11 | SYR4 |
| Chloroform | 37.1 µg/L No EPA limit set | 5/11 | SYR4 |
| Nitrite | 33 µg/L 3.3% of the EPA limit 1000 µg/L | 2/11 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28.25 µg/L 47% of the EPA limit 60 µg/L | 5/11 | SYR4 |
| Monochloroacetic Acid | 26.9 µg/L No EPA limit set | 5/11 | SYR4 |
| Lead | 13.2 µg/L 88% of the EPA limit 15 µg/L | 11/11 | SYR4 |
| Dibromochloromethane | 11.4 µg/L No EPA limit set | 4/11 | SYR4 |
| Bromodichloromethane | 11.3 µg/L No EPA limit set | 5/11 | SYR4 |
| Gross Alpha, Excl. Radon And U | 10.7 pCi/L 71% of the EPA limit 15 pCi/L | 11/11 | SYR4 |
| Dichloroacetic Acid | 7.34 µg/L No EPA limit set | 3/11 | SYR4 |
| Combined Radium (-226 And -228) | 4.9 pCi/L 98% of the EPA limit 5 pCi/L | 11/11 | SYR4 |
| Bromoform | 4.78 µg/L No EPA limit set | 1/11 | SYR4 |
| Arsenic | 4 µg/L 40% of the EPA limit 10 µg/L | 2/11 | SYR4 |
| Trichloroacetic Acid | 2.59 µg/L No EPA limit set | 4/11 | SYR4 |
| Dibromoacetic Acid | 2.12 µg/L No EPA limit set | 1/11 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L | 4/11 | SYR4 |
| Tetrachloroethylene | 1.77 µg/L 35% of the EPA limit 5 µg/L | 1/11 | SYR4 |
| Trichloroethylene | 1.65 µg/L 33% of the EPA limit 5 µg/L | 1/11 | SYR4 |
| Monobromoacetic Acid | 1.06 µg/L No EPA limit set | 1/11 | SYR4 |
| Combined Uranium | 0.9200 µg/L 3.1% of the EPA limit 30 µg/L | 6/11 | SYR4 |
| 1,1-Dichloroethylene | 0.4770 µg/L 6.8% of the EPA limit 7 µg/L | 1/11 | SYR4 |
| cis-1,2-Dichloroethylene | 0.4530 µg/L 0.6% of the EPA limit 70 µg/L | 1/11 | SYR4 |
| 1,1,2-Trichloroethane | 0.1950 µg/L 3.9% of the EPA limit 5 µg/L | 1/11 | SYR4 |
| Lead | 0.0109 mg/L 73% of the EPA limit 0.0150 mg/L | 11/11 | LCR |
Water suppliers serving La Crosse
| Supplier | Population served |
|---|---|
| LA CROSSE WATERWORKS | 53,000 |
| SHELBY TN OF WEDGEWOOD VLY | 1,020 |
| ST JOSEPH SAN DIST 1 | 503 |
| LA CROSSE ESTATES LLC | 351 |
| BROOKVIEW MHP | 300 |
| SHELBY TN OF SD 2 ARBOR HL | 231 |
| SHELBY TN OF SD 2 SKYLINE | 156 |
| BLUFFVIEW COMMONS | 140 |
| GOLDEN VALLEY MOBILE HOME PARK | 80 |
| ISLAND ESTATES | 50 |
| COULEE MANOR TRAILER PARK | 39 |
Frequently asked questions about La Crosse tap water
Is La Crosse tap water safe to drink?
EPA testing detected 29 contaminants in the water serving La Crosse. 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 La Crosse?
11 public water suppliers report drinking-water monitoring for La Crosse, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in La Crosse's water?
The contaminants EPA monitoring detected in La Crosse include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.