O'Connor Tract Co-Operative Water Co.
San Mateo County, CA
CA4110019
- People Served
- 2.8K
- Water Source
- Groundwater
- Counties
- San Mateo County
- Data from
- 2023
Contaminants Exceeding Limits
The following contaminants have exceeded the guideline limits at least once in the last year.
- 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 last year.
Alkalinity, Bicarbonate
| Avg: | 315.000 ppm |
|---|---|
| Limit: | - |
Arsenic
| Avg: | 2.700 ppb |
|---|---|
| Limit: | 10.000 ppb |
Calcium
| Avg: | 71.000 ppm |
|---|---|
| Limit: | - |
Chloride
| Avg: | 71.000 ppm |
|---|---|
| Limit: | - |
Fluoride
| Avg: | 0.160 ppm |
|---|---|
| Limit: | 4.000 ppm |
Gross Alpha Particle Activity
| Avg: | 1.535 pci/l |
|---|---|
| Limit: | 15.000 pci/l |
Contaminants tested
Summary
- People Served
- 2.8K
- Groundwater
- San Mateo County
- Data from 2023
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