Fairfield, CA: 12 Health Violations - Home Safety 90/100
2 ZIP codes · 8 water systems · Updated
ZipCheckup grade for Fairfield: A.
The model grade is high, but the records on this page include findings worth reviewing.
Your top priority: match a filter's certification to the violations (12 health-based violations). NSF certified filters →
Based on available records, Fairfield, CA holds an A or B ZipCheckup grade.
How Fairfield Compares
Data: EPA SDWIS
Key Facts for Fairfield Residents
- Your city's water systems recorded 15 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0013 mg/L.
- Homes built before 1986: 48% - older plumbing may contain lead solder.
- Estimated remediation: $450 per household.
- Health risk index (ZipCheckup composite of CDC data): 11.66.
Fairfield's Water Providers
Among 8 systems linked to Fairfield, CA, the 3 biggest by population served appear below.
- A
- A
- A
Overview
We track home safety data for 2 ZIP codes in Fairfield, California (population ~119,659), covering 8 community water systems serving approximately 291,935 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 2 ZIP codes.
2 of 2 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 12 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Fairfield: A (90/100)
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
Fairfield water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0013 mg/L (EPA action level: 0.015 mg/L)
- 0 of 2 ZIP codes with known status exceed the EPA lead action level
Radon Risk
2 of 2 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 |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 20 | 1 |
| Lead and Copper Rule Revisions | Treatment Technique | 10 | 2 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 94533 | A | 14 | 12 | City of Fairfield |
| 94534 | A | 3 | 1 | City of Fairfield |
All ZIP Codes in Fairfield
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.
Fairfield Community Health Snapshot
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
What's in Fairfield's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Fairfield Infrastructure Age
With 48% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Buyers and renters in Fairfield can ask a simple question of any home: was it built before 1986? The citywide median of 1984 will not answer it.
Most homes in Fairfield were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Fairfield
Relative to home values, Fairfield remediation estimates run low.
Estimated remediation costs in Fairfield can be compared with local home values. The $225–$1,050 estimated range can be set against the median property value; actual costs vary by home. Home values are 5% below the California average.
Fairfield: Lead Risk & Vulnerable Populations
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.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Fairfield: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Fairfield contains 94 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $29,312. Among ZIP codes with claim records, 100% 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 $450 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 Fairfield, CA