94104 ZIP Water Quality

Latest water quality information for ZIP Code 94104, California

Last update on March 2025

Very bad

Unsafe water with serious health risks.

Exceeds 1 EPA limits and 9 recommended standards.

Water Provider
sfpuc city distribution division
Owner Type
L (Local Government)
Population Served
884,363
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.

Chloramine

70 ppm
17.5x
EPA limits: 4 ppm
Above EPA regulatory threshold

Potential Health Effects

Respiratory irritation

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

1.60 ppb
26.7x
Recommended: 0.0600 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Chloroform

24.80 ppb
62.0x
Recommended: 0.4000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Dibromochloromethane

0.5000 ppb
5.0x
Recommended: 0.1000 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

Lindane

0.1000 ppb
3.1x
Recommended: 0.0320 ppb
Above health-based recommendations

Potential Health Effects

Neurotoxicity, cancer

Polychlorinated Biphenyls

0.1000 ppb
1.1x
Recommended: 0.0900 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Total Thms

26.80 ppb
178.7x
Recommended: 0.1500 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Other Detected Contaminants

Contaminant Detected Level EPA Limit Recommended Status
Alachlor 0.2000 ppb 2 ppb 2 ppb Within limits
Aluminum 16.50 ppb 200 ppb 600 ppb Within limits
Atrazine 0.1000 ppb 3 ppb 0.1000 ppb Within limits
Calcium 7.50 ppm Not established 80 ppm Within limits
Chlorate 76.10 ppb Not established 210 ppb Within limits
Chloride 10.80 ppm 250 ppm 250 ppm Within limits
Cobalt 1.70 ppb Not established 70 ppb Within limits
Color 3.60 CU 15 CU 15 CU Within limits
Conductivity 133.90 µS/cm Not established 800 µS/cm Within limits
Copper 51.80 ppb 1300 ppb 300 ppb Within limits
Dalapon 6.50 ppb 200 ppb 200 ppb Within limits
Dinoseb 1.40 ppb 7 ppb 7 ppb Within limits
Fluoride 632.70 ppb 4000 ppb 2000 ppb Within limits
Gross Alpha Activity 4 pCi/L 15 pCi/L 15 pCi/L Within limits
Hexachlorocyclopentadiene 0.5000 ppb 50 ppb 2 ppb Within limits
Magnesium 3.10 ppm Not established 30 ppm Within limits
Manganese 2.50 ppb 50 ppb 50 ppb Within limits
Molybdenum 0.2000 ppb Not established 40 ppb Within limits
Pentachlorophenol 0.2000 ppb 1 ppb 0.3000 ppb Within limits
Ph Level 8.10 pH units 8.50 pH units 8.50 pH units Within limits
Potassium 578.60 ppb Not established 5000 ppb Within limits
Silvex 0.7000 ppb 50 ppb 50 ppb Within limits
Sodium 11.60 ppm Not established 20 ppm Within limits
Specific Conductivity 56.80 µmhos/cm Not established 800 µmhos/cm Within limits
Strontium 52.80 ppb Not established 1500 ppb Within limits
Total Dissolved Solids 77 ppm 500 ppm 500 ppm Within limits
Turbidity 0.3000 NTU 1 NTU 0.3000 NTU Within limits
Zinc 47.80 ppb 5000 ppb 5000 ppb Within limits
No additional contaminants detected.

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