Water Quality in Bakersfield, CA: 52 Violations - Grade N/A

Data: EPA Safe Drinking Water Information System (SDWIS)

Water Quality Overview

Bakersfield, California has directly mapped EPA water-system data for 11 ZIP codes. This page reports typed compliance facts and does not relabel the multi-source Home Safety Score as a drinking-water grade.

The available EPA records report 52 violations, including 35 health-based violations across 11 directly mapped ZIP records with reported counts.

Lead Levels

The average 90th percentile lead level across Bakersfield water systems is 0.0034 mg/L - within EPA limits. No exceedances appear among the 11 ZIP records with known lead status.

With 53% of homes built before 1986, Bakersfield has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.

Water Systems Serving Bakersfield

Bakersfield is served by 18 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 589,959 people across 24 ZIP codes.

Each water system is identified by a Public Water System ID (PWSID) and is required to:

• Test for over 90 regulated contaminants on a regular schedule
• Report results to the EPA and state regulators
• Issue an annual Consumer Confidence Report (CCR) to all customers
• Take corrective action when violations occur

The EPA has taken 15 enforcement actions against water systems serving Bakersfield. Enforcement actions range from informal compliance assistance to formal orders and penalties.

How to Check Your Water in Bakersfield

1. Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels and violation history

2. Request your CCR - your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants

3. Get a home test - certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel

4. Consider filtration - NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics

5. Check for advisories - monitor your local utility website and local news for boil water advisories or system alerts

Contaminants Detected in Bakersfield Water Systems

The following contaminants have been detected or caused violations across Bakersfield's water systems:

MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.

Violation Trend Over Time

Year-by-year EPA violations recorded for water systems serving Bakersfield:

Violations have increased from 3 in 2021 to 9 in 2024. This trend warrants monitoring.

EPA Enforcement History

The EPA and state regulators have taken 13 enforcement actions against water systems serving Bakersfield. Recent actions:

Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-08-11.

Bakersfield vs. Nearby California Cities

How Bakersfield's water quality compares to similar cities in California:

Recommended Water Filters for Bakersfield

Based on contaminants detected in Bakersfield's water supply, these filter types are recommended:

Granular Activated Carbon (GAC, whole-house POE)

• Removes: Total trihalomethane (TTHM)
• Effectiveness: 80-99%
• Cost range: $400–$2000
• Certification: NSF/ANSI 53
• Recommended products:
  • Aquasana AQ-5200
  • Aquasana EQ-1000 Rhino

Reverse Osmosis (under-sink)

• Removes: Arsenic, Nickel, Nitrate as N
• Effectiveness: 90-99%
• Cost range: $150–$500
• Certification: NSF/ANSI 58
• Recommended products:
  • Waterdrop G3P800
  • iSpring RCC7AK
  • Crystal Quest Arsenic Filter

Water Quality by ZIP Code in Bakersfield

EPA coverage and recorded violations can differ across Bakersfield's ZIP codes. Missing counts are shown as unavailable, not zero:

Common Questions About Bakersfield Water

These are the most common questions residents search for about water quality in Bakersfield, California:

Is Bakersfield water hard or soft? Water hardness varies by source. Bakersfield's 18 water systems use multiple sources. Check your ZIP code report for specific hardness data.

Can I drink Bakersfield tap water? City-level EPA records cannot determine safety at a specific tap. The measured subset contains 35 health-based violations; check the affected utility record and consider certified testing.

What is the best water filter for Bakersfield? Based on detected contaminants, a granular activated carbon (gac, whole-house poe) filter is most recommended. See our Water Filter Matcher for personalized recommendations.

Bakersfield vs. California Average

Understanding how Bakersfield compares to the broader California average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.

To see how individual neighborhoods compare, check the ZIP code reports below - water quality can vary significantly even within Bakersfield.

ZIP Codes in Bakersfield

Bakersfield spans 24 ZIP codes. EPA water-system coverage is available for 11 directly mapped ZIP codes. Check each ZIP code for detailed contaminant data, violation history, and system information.

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones
• Enforcement: EPA ECHO database
• Filter recommendations: NSF/ANSI certified products

Source reporting periods vary. See each cited source for its publication schedule.