Chico, CA: 1 Health Violation - Home Safety 80/100
6 ZIP codes · 5 water systems · Updated
ZipCheckup grade for Chico: B.
This ZIP has a few items worth a quick check.
Based on available records, Chico, CA holds an A or B ZipCheckup grade.
How Chico Compares
Data: EPA SDWIS
Chico Water: The Quick Version
- Your city's water systems recorded 5 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0002 mg/L.
- Estimated remediation: $800 per household.
- Health risk index (ZipCheckup composite of CDC data): 12.05.
Water Systems Serving Chico
More than one public water system is linked to Chico, CA: federal records tie 5 systems to the area, and the 3 with the largest reported service populations are shown below. Which of them supplies a particular address depends on where the property sits, and a water bill or the utility can confirm it.
- B
- B
- B
Overview
We track home safety data for 6 ZIP codes in Chico, California, covering 5 community water systems serving approximately 117,653 people. The EPA snapshots used for this build directly map water systems to 4 of 6 ZIP codes.
3 of 4 ZIP codes with a reported violation count in the available EPA record (75%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Chico: B (80/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Chico water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0002 mg/L (EPA action level: 0.015 mg/L)
- 0 of 4 ZIP codes with known status exceed the EPA lead action level
Radon Risk
6 of 6 ZIP records with known zones are in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead and Copper Rule Revisions | Treatment Technique | 6 | 2 |
| Consumer Confidence Rule | Reporting | 4 | 3 |
| Nitrate | Inorganic | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95926 | B | 4 | 1 | Cal-water Service Company-chico |
| 95973 | B | 4 | 1 | Cal-water Service Company-chico |
| 95928 | B | 1 | 0 | Cal-water Service Company-chico |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 95929 | — | Cal-water Service Company-chico | 114,925 |
All ZIP Codes in Chico
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
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Chico
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Chico
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Chico: Remediation Cost in Perspective
The remediation-to-value ratio for Chico sits at the bottom of the scale.
Estimated remediation costs in Chico can be compared with local home values. The $500–$1,200 estimated range can be set against the median property value; actual costs vary by home. Home values are 35% below the California average.
Protecting Children from Lead in Chico
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Available area-level lead records for Chico do not determine the lead level at an individual tap. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Chico
Historical NFIP data for Chico contains 206 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $26,153. Among ZIP codes with claim records, 67% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $800 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Chico, CA