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Echo Lake Water Quality

Latest water quality information for Echo Lake, California

Last update on March 2025

Very bad

Unsafe water with serious health risks.

Exceeds 1 EPA limits and 6 recommended standards.

Water Provider
south tahoe pud - main
Owner Type
L (Local Government)
Population Served
109,414
Data Sources
2010-2024

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.

Radon

3542.20 pCi/L
11.8x
EPA limits: 300 pCi/L
Above EPA regulatory threshold

Potential Health Effects

Cancer

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.

Benzidine

3 ppb
20.0x
Recommended: 0.1500 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Lead

1.40 ppb
7.0x
Recommended: 0.2000 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity

Lead Level

1.40 ppb
7.0x
Recommended: 0.2000 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity

Total Thms

0.2000 ppb
1.3x
Recommended: 0.1500 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Uranium

4.50 ppb
10.5x
Recommended: 0.4300 ppb
Above health-based recommendations

Potential Health Effects

Cancer, kidney damage

Other Detected Contaminants

Contaminant Detected Level EPA Limit Recommended Status
Calcium 16.50 ppm Not established 80 ppm Within limits
Chlorate 200 ppb Not established 210 ppb Within limits
Chloride 5.50 ppm 250 ppm 250 ppm Within limits
Conductivity 98.70 µS/cm Not established 800 µS/cm Within limits
Gross Alpha Activity 5.80 pCi/L 15 pCi/L 15 pCi/L Within limits
Hexachlorocyclopentadiene 0.5000 ppb 50 ppb 2 ppb Within limits
Magnesium 1.30 ppm Not established 30 ppm Within limits
Molybdenum 5.40 ppb Not established 40 ppb Within limits
Nickel 6.40 ppb Not established 70 ppb Within limits
Ph Level 7 pH units 8.50 pH units 8.50 pH units Within limits
Potassium 759.40 ppb Not established 5000 ppb Within limits
Silica 24.60 ppm Not established 25 ppm Within limits
Sodium 7.30 ppm Not established 20 ppm Within limits
Specific Conductivity 266.30 µmhos/cm Not established 800 µmhos/cm Within limits
Strontium 45.60 ppb Not established 1500 ppb Within limits
Total Dissolved Solids 177.80 ppm 500 ppm 500 ppm Within limits
Trichlorofluoromethane 1.70 ppb Not established 1300 ppb Within limits
Zinc 11.70 ppb 5000 ppb 5000 ppb Within limits
No additional contaminants detected.

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