Norco, City Of
Norco, CA
CA3310025
Contaminants Exceeding Limits
The following contaminants have exceeded the guideline limits at least once in the past ten years.
- MA
Manganese
Manganese is a metal found in rocks and soil. It enters water through erosion and industrial processes. While essential in small amounts, excess can harm the nervous system.
Other Contaminants Detected
The following contaminants have been detected, but not exceeded the guideline limits in the past ten years.
1,4-Dioxane
10 detections
| Avg Result: | 0.110 ppb |
|---|---|
| Limit: | 0.350 ppb |
Arsenic
209 detections
| Avg Result: | 4.308 ppb |
|---|---|
| Limit: | 10.000 ppb |
Barium
2 detections
| Avg Result: | 0.036 ppm |
|---|---|
| Limit: | 2.000 ppm |
Benzene
6 detections
| Avg Result: | 0.138 ppb |
|---|---|
| Limit: | 5.000 ppb |
Bromodichloromethane
63 detections
| Avg Result: | 1.433 ppb |
|---|---|
| Limit: | 80.000 ppb |
Bromoform
96 detections
| Avg Result: | 7.113 ppb |
|---|---|
| Limit: | 80.000 ppb |
Contaminants tested
Contaminants that have been tested but not detected
Summary
- People Served
- 27.6K
- Surface Water
- Riverside County
- Data from 2014-2024
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