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95377 ZIP Water Quality

Latest water quality information for ZIP Code 95377, California

Last update on March 2025

Very bad

Unsafe water with serious health risks.

Exceeds 1 EPA limits and 12 recommended standards.

Water Provider
tracy, city of
Owner Type
L (Local Government)
Population Served
98,601
Data Sources
2009-2024

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.

Odor

3.30 TON
1.1x
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.

Atrazine

0.2000 ppb
2.0x
Recommended: 0.1000 ppb
Above health-based recommendations

Potential Health Effects

Endocrine disruption

Boron

91.10 ppm
182.2x
Recommended: 0.5000 ppm
Above health-based recommendations

Potential Health Effects

Reproductive issues

Bromodichloromethane

4.20 ppb
70.0x
Recommended: 0.0600 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Bromoform

3.30 ppb
6.6x
Recommended: 0.5000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Chloroform

15.30 ppb
38.2x
Recommended: 0.4000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Cobalt

77.40 ppb
1.1x
Recommended: 70 ppb
Above health-based recommendations

Potential Health Effects

Cardiovascular effects

Dibromochloromethane

5 ppb
50.0x
Recommended: 0.1000 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Perchlorate

1.20 ppb
1.2x
Recommended: 1 ppb
Above health-based recommendations

Potential Health Effects

Thyroid disruption

Sodium

35 ppm
1.8x
Recommended: 20 ppm
Above health-based recommendations

Potential Health Effects

Hypertension

Total Thms

27.20 ppb
181.3x
Recommended: 0.1500 ppb
Above health-based recommendations

Potential Health Effects

Cancer

Turbidity

0.7000 NTU
2.3x
Recommended: 0.3000 NTU
Above health-based recommendations

Potential Health Effects

Infection risk

Other Detected Contaminants

Contaminant Detected Level EPA Limit Recommended Status
Calcium 14.40 ppm Not established 80 ppm Within limits
Chloride 52.60 ppm 250 ppm 250 ppm Within limits
Color 2.70 CU 15 CU 15 CU Within limits
Conductivity 155.80 µS/cm Not established 800 µS/cm Within limits
Magnesium 8.70 ppm Not established 30 ppm Within limits
Manganese 3.70 ppb 50 ppb 50 ppb Within limits
Molybdenum 2.10 ppb Not established 40 ppb Within limits
Ph Level 5.90 pH units 8.50 pH units 8.50 pH units Within limits
Potassium 1.60 ppb Not established 5000 ppb Within limits
Silica 10.10 ppm Not established 25 ppm Within limits
Specific Conductivity 282 µmhos/cm Not established 800 µmhos/cm Within limits
Strontium 158.10 ppb Not established 1500 ppb Within limits
Sulfate 37.30 ppm 250 ppm 250 ppm Within limits
Total Dissolved Solids 192.30 ppm 500 ppm 500 ppm Within limits
Trichlorofluoromethane 1.80 ppb Not established 1300 ppb Within limits
Zinc 21.80 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.

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