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Calistoga Water Quality

Latest water quality information for Calistoga, California

Last update on March 2025

Very bad

Unsafe water with serious health risks.

Exceeds 1 EPA limits and 8 recommended standards.

Water Provider
calistoga, city of
Owner Type
L (Local Government)
Population Served
5,610
Data Sources
2008-2023

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.

Odor

44.60 TON
14.9x
EPA limits: 3 TON
Above EPA regulatory threshold

Potential Health Effects

Aesthetic concern

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

58.20 ppm
116.4x
Recommended: 0.5000 ppm
Above health-based recommendations

Potential Health Effects

Reproductive issues

Bromodichloromethane

9.20 ppb
153.3x
Recommended: 0.0600 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Chloroform

39.80 ppb
99.5x
Recommended: 0.4000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Dibromochloromethane

2.10 ppb
21.0x
Recommended: 0.1000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Lead

1.20 ppb
6.0x
Recommended: 0.2000 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity

Lead Level

1.20 ppb
6.0x
Recommended: 0.2000 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity

Total Thms

53.40 ppb
356.0x
Recommended: 0.1500 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Other Detected Contaminants

Contaminant Detected Level EPA Limit Recommended Status
Calcium 15 ppm Not established 80 ppm Within limits
Chloride 16.70 ppm 250 ppm 250 ppm Within limits
Color 1.40 CU 15 CU 15 CU Within limits
Conductivity 326.50 µS/cm Not established 800 µS/cm Within limits
Copper 59.80 ppb 1300 ppb 300 ppb Within limits
Magnesium 14.80 ppm Not established 30 ppm Within limits
Mercury 0.2000 ppb 2 ppb 1.20 ppb Within limits
Molybdenum 0.1000 ppb Not established 40 ppb Within limits
Nickel 57.90 ppb Not established 70 ppb Within limits
O Xylene 0.6000 ppb 10000 ppb 10000 ppb Within limits
Ph Level 7.50 pH units 8.50 pH units 8.50 pH units Within limits
Potassium 2 ppb Not established 5000 ppb Within limits
Silica 15.40 ppm Not established 25 ppm Within limits
Sodium 12.30 ppm Not established 20 ppm Within limits
Specific Conductivity 145.20 µmhos/cm Not established 800 µmhos/cm Within limits
Strontium 141.30 ppb Not established 1500 ppb Within limits
Sulfate 26.70 ppm 250 ppm 250 ppm Within limits
Total Dissolved Solids 157.70 ppm 500 ppm 500 ppm Within limits
Zinc 354.80 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

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