Poway Water Quality
Latest water quality information for Poway, California
Last update on March 2025
Unsafe water with serious health risks.
Exceeds 2 EPA limits and 13 recommended standards.
Contaminants exceeding EPA limits
What it means: This refers to substances in the water that are found at levels higher than what the EPA allows. The EPA (Environmental Protection Agency) is a U.S. government agency that sets legal limits for harmful contaminants to protect public health. Exceeding these limits means the water may pose health risks based on federal safety standards.
Chloride
1061.10 ppmPotential Health Effects
None / Blood pressure
Total Dissolved Solids
3356.20 ppmPotential Health Effects
Gastrointestinal issues
Contaminants exceeding recommended standards
What it means: This refers to substances in the water that are above health-based guidelines set by organizations such as the World Health Organization (WHO) and the U.S. Environmental Protection Agency (EPA). These standards, while not always legally enforceable, are based on scientific research to protect health. Exceeding them may indicate potential health concerns.
Boron
135.70 ppmPotential Health Effects
Reproductive issues
Bromodichloromethane
11.60 ppbPotential Health Effects
Cancer
Bromoform
2.80 ppbPotential Health Effects
Cancer
Chloroform
11.40 ppbPotential Health Effects
Cancer
Conductivity
8095.20 µS/cmPotential Health Effects
None
Dibromochloromethane
10.50 ppbPotential Health Effects
Cancer
Lead
1.20 ppbPotential Health Effects
Neurotoxicity
Lead Level
1.20 ppbPotential Health Effects
Neurotoxicity
Sodium
91.90 ppmPotential Health Effects
Hypertension
Total Thms
38 ppbPotential Health Effects
Cancer
Uranium
3 ppbPotential Health Effects
Cancer, kidney damage
Other Detected Contaminants
| Contaminant | Detected Level | EPA Limit | Recommended | Status |
|---|---|---|---|---|
| Aluminum | 57.70 ppb | 200 ppb | 600 ppb | Within limits |
| Calcium | 51.90 ppm | Not established | 80 ppm | Within limits |
| Chlorate | 23.50 ppb | Not established | 210 ppb | Within limits |
| Cobalt | 12.20 ppb | Not established | 70 ppb | Within limits |
| Fluoride | 3.60 ppb | 4000 ppb | 2000 ppb | Within limits |
| Gross Alpha Activity | 3.70 pCi/L | 15 pCi/L | 15 pCi/L | Within limits |
| Gross Beta Activity | 4.20 pCi/L | 50 pCi/L | 50 pCi/L | Within limits |
| Magnesium | 20.50 ppm | Not established | 30 ppm | Within limits |
| Manganese | 16.70 ppb | 50 ppb | 50 ppb | Within limits |
| Molybdenum | 19.80 ppb | Not established | 40 ppb | Within limits |
| Ph Level | 7.90 pH units | 8.50 pH units | 8.50 pH units | Within limits |
| Potassium | 1237.40 ppb | Not established | 5000 ppb | Within limits |
| Strontium | 704.70 ppb | Not established | 1500 ppb | Within limits |
| Sulfate | 168.30 ppm | 250 ppm | 250 ppm | Within limits |
| Zinc | 99.90 ppb | 5000 ppb | 5000 ppb | Within limits |
| No additional contaminants detected. | ||||
How to best protect from water pollution?
Reduce your water pollution exposure in California
Carbon Filter
Carbon filters are effective at removing many common contaminants including chlorine, sediment, volatile organic compounds (VOCs), and improves taste and odor.
Reverse Osmosis
Reverse osmosis systems can remove up to 99% of dissolved contaminants from water including heavy metals, fluoride, nitrates, and arsenic.