Tap Water Safety Report for Rancho Cordova, California

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Yes — Rancho Cordova's Tap Water Is Safe to Drink

Rancho Cordova, California tap water scored 84/100 (B+) based on EPA data. All 9 tested contaminants are within safe limits. Most residents can drink this water with confidence.

Score: 84/100(B+)

Last updated: February 2026

Rancho Cordova Water Quality at a Glance

Overall Score

84/100

Grade: B+

Contaminants Tested

All within limits

EPA Violations

1 active

Water Source

groundwater

Mixed sources

Population Served

80,392

residents

Water Systems

serving this area

What You Should Do

Based on Rancho Cordova's water quality data, here are our specific recommendations:

Your tap water meets safety standards

Rancho Cordova's water is within EPA limits for all tested contaminants. You can drink it with confidence. A basic carbon filter can improve taste if desired.

Consider annual testing for peace of mind

Even in cities with good water quality, home plumbing can introduce contaminants. An annual home water test kit costs $30-80 and checks for lead, bacteria, and other common concerns.

View Full Water Quality Report Browse Water Filters

Score Breakdown

Contaminant Levels89/100

How contaminant levels compare to EPA limits (50% of overall score)

Regulatory Compliance80/100

EPA violation history and enforcement actions (30% of overall score)

Infrastructure79/100

Water system infrastructure and source quality (20% of overall score)

Highlights

Good overall water quality
Most contaminants within safe limits

Frequently Asked Questions

Is Rancho Cordova tap water safe for babies and children?

Rancho Cordova's water scored 84/100, and all tested contaminants are within EPA safety limits. This means it is generally safe for preparing baby formula and for children to drink. However, the EPA recommends that parents of infants under 6 months use filtered or bottled water for formula preparation as an extra precaution. If your home has older plumbing (pre-1986), consider testing for lead at the tap, since city water reports reflect water quality at the treatment plant, not at your faucet.

What contaminants are in Rancho Cordova, California drinking water?

Rancho Cordova's water has been tested for 9 contaminants. None currently exceed EPA maximum contaminant levels. The most notable detections include: Fluoride (0.6786 mg/L, EPA limit: 4 mg/L — 17% of limit); Nitrate (0.8038 mg/L, EPA limit: 10 mg/L — 8% of limit); Copper (0.0762 mg/L, EPA limit: 1.3 mg/L — 6% of limit); Mercury (0.0001 mg/L, EPA limit: 0.002 mg/L — 6% of limit); Haloacetic Acids (3.5509 ug/L, EPA limit: 60 ug/L — 6% of limit). The water system also has 1 active EPA violation(s). Water quality can vary seasonally and by neighborhood, so home testing provides the most accurate picture for your specific tap.

Should I filter my water in Rancho Cordova?

While Rancho Cordova's water meets all EPA safety standards with a score of 84/100, many residents choose to filter for improved taste and as an extra precaution. A basic activated carbon filter (like a Brita or PUR pitcher) can reduce chlorine taste and odor. If you want additional protection against trace contaminants, a multi-stage filter or reverse osmosis system provides more thorough filtration. Filtering is a personal choice at this quality level, not a necessity.

How does Rancho Cordova water compare to the national average?

Rancho Cordova's water quality score of 84/100 (B+) is 12 points above the national average of 72. The city's water comes from a mix of groundwater and surface water sources. This places Rancho Cordova among the better-performing water systems in the country. You can see how Rancho Cordova compares to nearby cities in our state rankings.

Learn More About Rancho Cordova's Water

Full Water Quality Report

Detailed contaminant data, violation history, and water system information for Rancho Cordova.

Filter Recommendations

Find the best water filter for Rancho Cordova based on detected contaminants and your budget.

California Water Quality Overview

See how Rancho Cordova compares to other cities across California.

National Rankings

See how Rancho Cordova ranks among all cities in the US for water quality.

Data Disclaimer

This report is based on publicly available EPA data and water quality test results. Water quality can vary by neighborhood, building age, and season. This information is for educational purposes and should not replace professional water testing. If you have specific health concerns about your water, contact your local water utility or a certified water testing laboratory. Last data update: February 2, 2026.

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