Home / California / Twin Peaks

Twin Peaks Water Quality

Latest water quality information for Twin Peaks, California

Last update on March 2025

Ok

Acceptable water with improvement potential.

Exceeds 0 EPA limits and 7 recommended standards.

Water Provider
lake arrowhead csd
Owner Type
L (Local Government)
Population Served
7,008
Data Sources
2008-2024

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.

Good news! No contaminants were found to exceed EPA limits.

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.

Bromodichloromethane

8.40 ppb
140.0x
Recommended: 0.0600 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Bromoform

2.10 ppb
4.2x
Recommended: 0.5000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Chloroform

19.10 ppb
47.8x
Recommended: 0.4000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Dibromochloromethane

4.20 ppb
42.0x
Recommended: 0.1000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Lead

4.60 ppb
23.0x
Recommended: 0.2000 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity

Lead Level

4.60 ppb
23.0x
Recommended: 0.2000 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity

Total Thms

31.90 ppb
212.7x
Recommended: 0.1500 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Other Detected Contaminants

Contaminant Detected Level EPA Limit Recommended Status
Aluminum 11 ppb 200 ppb 600 ppb Within limits
Calcium 17.10 ppm Not established 80 ppm Within limits
Chlorate 100 ppb Not established 210 ppb Within limits
Chloride 19 ppm 250 ppm 250 ppm Within limits
Cobalt 0.5000 ppb Not established 70 ppb Within limits
Conductivity 358.40 µS/cm Not established 800 µS/cm Within limits
Magnesium 2.70 ppm Not established 30 ppm Within limits
Molybdenum 0.7000 ppb Not established 40 ppb Within limits
O Xylene 0.9000 ppb 10000 ppb 10000 ppb Within limits
Ph Level 4.90 pH units 8.50 pH units 8.50 pH units Within limits
Potassium 1.20 ppb Not established 5000 ppb Within limits
Sodium 15.30 ppm Not established 20 ppm Within limits
Specific Conductivity 81.40 µmhos/cm Not established 800 µmhos/cm Within limits
Strontium 214.70 ppb Not established 1500 ppb Within limits
Sulfate 10.40 ppm 250 ppm 250 ppm Within limits
Total Dissolved Solids 138 ppm 500 ppm 500 ppm Within limits
Trichlorofluoromethane 0.6000 ppb Not established 1300 ppb Within limits
Zinc 34.80 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.