Great Falls City Of
Great Falls, MT
MT0000525
Contaminants Exceeding Limits
The following contaminants have exceeded the guideline limits at least once in the past ten years.
- TR
Trichloroacetic Acid
Trichloroacetic acid is a byproduct formed when chlorine disinfectants react with organic matter in water. It's commonly found in chlorinated drinking water supplies.
Other Contaminants Detected
The following contaminants have been detected, but not exceeded the guideline limits in the past ten years.
Arsenic
7 detections
| Avg Result: | 2.167 ppb |
|---|---|
| Limit: | 10.000 ppb |
Barium
1 detection
| Avg Result: | 0.008 ppm |
|---|---|
| Limit: | 2.000 ppm |
Bromodichloromethane
211 detections
| Avg Result: | 10.904 ppb |
|---|---|
| Limit: | 80.000 ppb |
Chloroform
211 detections
| Avg Result: | 33.829 ppb |
|---|---|
| Limit: | 70.000 ppb |
Chromium, Hex
4 detections
| Avg Result: | 0.037 ppb |
|---|---|
| Limit: | 10.000 ppb |
Combined Uranium
1 detection
| Avg Result: | 1.000 pci/l |
|---|---|
| Limit: | 30.000 pci/l |
Contaminants tested
Contaminants that have been tested but not detected
Summary
- People Served
- 60K
- Surface Water
- Cascade County
- Data from 2014-2023
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