How much copper is in Fields Landing water?

The maximum detected level of copper in Fields Landing water is 0.965 ppb. The EPA limit is 1.3 mg/L (action level). See the ZIP code table above for area-specific levels.

Detected Copper

Copper in Fields Landing, CA Drinking Water

Q: Is copper in Fields Landing water safe?

Copper was detected in Fields Landing water at 0.965 ppb, below the EPA limit of 1.3 mg/L (action level). Check ZIP-level data on this page for your specific area.

Copper data for Fields Landing, California · 27,078 residents · 1 ZIP code

Across Fields Landing, California, federal monitoring data has captured Copper in water samples at detectable concentrations in the most recent available reporting cycle.

0.965 ppb

Max Level Detected

0.97 ppb

Average Level

1.3 mg/L (action level)

EPA action level

Moderate

Health Risk

Reverse Osmosis or NSF 53 Carbon Block

Best Filter Method

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14

Copper in Fields Landing Tap Water

Copper has been detected in Fields Landing, California drinking water at a maximum level of 0.965 ppb — below the EPA action level of 1.3 mg/L (action level).

This analysis covers 27,078 residents across 1 ZIP code in Fields Landing.

Fields Landing's overall water quality grade is C (66/100).

Is Copper in Fields Landing Water Safe?

Copper was detected in Fields Landing water but currently falls within EPA limits. However, some health organizations argue the EPA action level may not be protective enough.

If you are concerned, a reverse osmosis or nsf 53 carbon block filter can reduce copper levels further.

Copper Levels by ZIP Code

ZIP Code	Copper Level	EPA Limit	Status
95537	0.965 ppm	1.3 mg/L (action level)	OK

Average copper level across Fields Landing: 0.97 ppb

Health Effects of Copper

Nausea, vomiting, and diarrhea (short-term, high levels)
Liver and kidney damage (long-term)
Particularly dangerous for people with Wilson's disease
Infants are more sensitive than adults

Health risk severity: Moderate. Governed by the Lead and Copper Rule.

How Copper Gets Into Drinking Water

Corrosion of copper household plumbing
Acidic (low pH) water accelerates copper leaching
New copper pipes leach more than aged ones
Mining and industrial discharge (rare for tap water)

What to Do About Copper in Fields Landing Water

Run water for 30-60 seconds before use (flushes stagnant water)
Install an NSF 53 or NSF 58 certified filter
If pH is low, consider a whole-home acid neutralizer
Test first-draw morning water to check actual copper levels

Look for filters certified under NSF 53 for copper removal.

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