Volcano Water Quality

Latest water quality information for Volcano, California

Last update on March 2025

Very bad

Unsafe water with serious health risks.

Exceeds 2 EPA limits and 6 recommended standards.

Water Provider

volcano community service dist

Owner Type

L (Local Government)

Population Served

160

Data Sources

2015-2022

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.

Turbidity

1.20 NTU

1.2x

EPA limits: 1 NTU

Above EPA regulatory threshold

Potential Health Effects

Infection risk

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.

Bromoform

0.7000 ppb

1.4x

Recommended: 0.5000 ppb

Above health-based recommendations

Potential Health Effects

Cancer

Calcium

95 ppm

1.2x

Recommended: 80 ppm

Above health-based recommendations

Potential Health Effects

None

Sodium

38 ppm

1.9x

Recommended: 20 ppm

Above health-based recommendations

Potential Health Effects

Hypertension

Total Thms

0.2000 ppb

1.3x

Recommended: 0.1500 ppb

Above health-based recommendations

Potential Health Effects

Cancer

Other Detected Contaminants

Contaminant	Detected Level	EPA Limit	Recommended	Status
Chloride	115 ppm	250 ppm	250 ppm	Within limits
Color	2.50 CU	15 CU	15 CU	Within limits
Fluoride	120 ppb	4000 ppb	2000 ppb	Within limits
Gross Alpha Activity	3.50 pCi/L	15 pCi/L	15 pCi/L	Within limits
Magnesium	18 ppm	Not established	30 ppm	Within limits
Manganese	3.60 ppb	50 ppb	50 ppb	Within limits
Ph Level	7.50 pH units	8.50 pH units	8.50 pH units	Within limits
Zinc	483 ppb	5000 ppb	5000 ppb	Within limits
No additional contaminants detected.

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