Water Quality in Kerman, CA: 8 Violations — Grade C
Grade C · Score 67/100 · 2 water systems · Updated 2026-05-03
Kerman's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Federal EPA data for Kerman, CA shows 8 water compliance events in the record — the table below identifies system names and violation types.
Water Quality by ZIP Code in Kerman
Water quality varies across Kerman's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 93630 | C | 67 | 8 | 1 | View report → |
Water Quality Overview
Kerman, California receives a water quality grade of C with an overall score of 67 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 2 water systems serving Kerman have accumulated 8 EPA violations, including 1 health-based violation. These violations are tracked across 1 ZIP codes serving approximately 17,281 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Kerman's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
Lead testing data for Kerman is currently being collected. The EPA requires all community water systems to test for lead under the Lead and Copper Rule.
With 42% of homes built before 1986, Kerman 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.
Radon Risk
Kerman is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Kerman
Kerman is served by 2 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 17,281 people across 1 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 10 enforcement actions against water systems serving Kerman. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Kerman
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
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
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Kerman Water Systems
The following contaminants have been detected or caused violations across Kerman's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Lead | Inorganic | 0.015 mg/L | 2 | 1 | No |
| Stage 2 DBP Rule | Treatment Technique | N/A | 2 | 1 | Yes |
| Surface Water Treatment Rule | Treatment Technique | N/A | 1 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Kerman. Recent actions:
| Date | Action Type |
|---|---|
| 2025-02-25 | State Order Extension |
| 2025-02-05 | State Filed Suit |
| 2025-02-04 | State Filed Suit |
| 2024-12-16 | State Order Extension |
| 2024-11-13 | State Filed Suit |
| 2024-06-26 | State Filed Suit |
| 2024-03-28 | State Filed Suit |
| 2022-04-12 | State Filed Suit |
| 2022-01-05 | State Order Extension |
| 2021-09-21 | State Filed Suit |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-02-25.
Kerman vs. Nearby California Cities
How Kerman's water quality compares to similar cities in California:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Kerman | C | 8 | 2 | 17,281 |
| Cedar Ridge | D | 0 | 1 | 17,154 |
| Dutch Flat | C | 0 | 1 | 17,154 |
| Crestline | B | 2 | 5 | 17,005 |
Common Questions About Kerman Water
These are the most common questions residents search for about water quality in Kerman, California:
Is Kerman water hard or soft? Water hardness varies by source. Kerman's 2 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Kerman tap water? Kerman's water receives a grade of C (67/100). There are 1 health-based violations — consider filtration.
What is the best water filter for Kerman? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Kerman vs. California Average
Understanding how Kerman 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 Kerman.
ZIP Codes in Kerman
Kerman spans 1 ZIP code. The ZIP with the lowest water quality score is 93630. Each ZIP code has its own water quality profile based on the specific water system serving that area. 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
Updated daily.