Fontana, CA: 1 Violation - Home Safety 75/100
5 ZIP codes · 4 water systems · Updated
ZipCheckup grade for Fontana: B.
This ZIP looks solid, with a few items worth a quick check.
Water systems in Fontana, CA serve households with few reported safety events.
How Fontana Compares
Data: EPA SDWIS
Fontana Water: The Quick Version
- Your city's water systems recorded 1 violation in the past 5 years.
- Homes built before 1986: 45% - older plumbing may contain lead solder.
- Estimated remediation: $1,000 per household.
- CDC health risk index: 11.58.
Water Systems Serving Fontana
Throughout Fontana, CA, water comes from one of 3 primary utilities out of 4 total systems - independent providers with different rate structures, infrastructure, and compliance records that vary across the service territory.
- B
- B
- B
Overview
We track home safety data for 5 ZIP codes in Fontana, California (population ~235,632), covering 4 community water systems serving approximately 556,322 people region-wide. The EPA snapshots used for this build directly map water systems to 3 of 5 ZIP codes.
1 of 3 ZIP codes with a reported violation count in the available EPA record (33%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Fontana: B (75/100)
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
Fontana water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
- 0 of 3 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 5 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead | Inorganic | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92335 | B | 1 | 0 | San Gabriel Valley Wc - Fontana |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 92336 | B | San Gabriel Valley Wc - Fontana | 237,700 |
| 92337 | B | San Gabriel Valley Wc - Fontana | 237,700 |
All ZIP Codes in Fontana
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 Fontana
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Fontana
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Fontana's Housing Stock?
With 45% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
A median build year of 1983 in Fontana is characteristic of a mixed-era city where plumbing risk depends heavily on the specific property. Homes built before 1986 may have lead-soldered copper joints; those from before 1970 face the added possibility of lead service lines. The percentages above capture how much of the residential stock falls into each risk era.
Most homes in Fontana were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Fontana: Remediation Cost in Perspective
For most homeowners in Fontana, the estimated cost of water and safety remediation represents a proportionally modest share of what properties are worth - placing this area in the lower tier of the remediation share scale.
Remediation costs in Fontana are relatively low compared to home values. The $400–$1,660 estimated range is a small fraction of median property value. Home values are 30% below the California average.
Protecting Children from Lead in Fontana
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Despite citywide averages serving as the standard public reference point, those aggregates cannot resolve what is happening at one specific faucet - and where 45% of Fontana homes come from before the solder rule or where utility samples sit at or above the action mark, the gap between system data and faucet reality matters more than it does in lower-exposure communities. An in-home draw closes that gap, with certified filtration through retailer networks available where confirmed faucet results warrant additional measures.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Fontana
Historical NFIP data for Fontana contains 23 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $13,281. Among ZIP codes with claim records, 50% 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 <strong>$1,000</strong> 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 Fontana, CA