Walnut Grove Water Quality

Latest water quality information for Walnut Grove, California

Last update on March 2025

Acceptable water with improvement potential.

Exceeds 0 EPA limits and 5 recommended standards.

Water Provider

cal am - walnut grove

Owner Type

P (Private)

Population Served

654

Data Sources

2009-2021

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.

Good news! No contaminants were found to exceed EPA limits.

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.

Arsenic

1.20 ppb

300.0x

Recommended: 0.004000 ppb

Above health-based recommendations

Potential Health Effects

Cancer

Boron

442.60 ppm

885.2x

Recommended: 0.5000 ppm

Above health-based recommendations

Potential Health Effects

Reproductive issues

Cobalt

479.40 ppb

6.8x

Recommended: 70 ppb

Above health-based recommendations

Potential Health Effects

Cardiovascular effects

Silica

27.80 ppm

1.1x

Recommended: 25 ppm

Above health-based recommendations

Potential Health Effects

None

Sodium

90.20 ppm

4.5x

Recommended: 20 ppm

Above health-based recommendations

Potential Health Effects

Hypertension

Other Detected Contaminants

Contaminant	Detected Level	EPA Limit	Recommended	Status
Calcium	4.40 ppm	Not established	80 ppm	Within limits
Chloride	53.10 ppm	250 ppm	250 ppm	Within limits
Color	1.40 CU	15 CU	15 CU	Within limits
Fluoride	261.50 ppb	4000 ppb	2000 ppb	Within limits
Magnesium	1.70 ppm	Not established	30 ppm	Within limits
Molybdenum	3.40 ppb	Not established	40 ppb	Within limits
Ph Level	5 pH units	8.50 pH units	8.50 pH units	Within limits
Potassium	207.50 ppb	Not established	5000 ppb	Within limits
Specific Conductivity	260.30 µmhos/cm	Not established	800 µmhos/cm	Within limits
Strontium	91 ppb	Not established	1500 ppb	Within limits
Total Dissolved Solids	210.50 ppm	500 ppm	500 ppm	Within limits
Zinc	19.10 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.