San Bernardino, CA: 24 Violations - Home Safety 67/100
18 ZIP codes · 12 water systems · Updated
ZipCheckup grade for San Bernardino: C.
A mixed picture - some signals here are worth your attention.
San Bernardino, CA: a C, mid-scale.
How San Bernardino Compares
Data: EPA SDWIS
Water Quality Map: San Bernardino, CA
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
Distribution of Home Safety grades across San Bernardino.
San Bernardino Water: The Quick Version
- Your city's water systems recorded 24 violations since 2021.
- Average of reported 90th-percentile lead results: 0.0225 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Estimated remediation: $1,043 per household.
- Health risk index (ZipCheckup composite of CDC data): 11.58.
Water Systems Serving San Bernardino
The 3 largest of 12 systems connected with San Bernardino, CA are listed below.
- B
- C
- B
Overview
We track home safety data for 18 ZIP codes in San Bernardino, California (population ~255,071), covering 12 community water systems serving approximately 657,096 people region-wide. The EPA snapshots used for this build directly map water systems to 8 of 18 ZIP codes.
5 of 8 ZIP codes with a reported violation count in the available EPA record (63%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for San Bernardino: C (67/100)
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
San Bernardino water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0225 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 8 ZIP codes with known status exceed the EPA lead action level
Radon Risk
18 of 18 ZIP records with known zones are in EPA Radon Zone 2.
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 |
|---|---|---|---|
| Revised Total Coliform Rule | Microbiological | 50 | 2 |
| Nitrate | Inorganic | 4 | 3 |
| Lead and Copper Rule Revisions | Treatment Technique | 4 | 1 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92407 | C | 20 | 1 | San Bernardino City |
| 92411 | B | 16 | 0 | San Bernardino City |
| 92404 | C | 2 | 0 | San Bernardino City |
| 92408 | C | 2 | 0 | San Bernardino City |
| 92410 | C | 1 | 0 | San Bernardino City |
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 92401 | B | San Bernardino City | 214,665 |
| 92405 | B | San Bernardino City | 214,665 |
| 92415 | B | San Bernardino City | 214,665 |
All ZIP Codes in San Bernardino
- 92401 [B]
- 92402
- 92403
- 92404 [C] - 2 violations
- 92405 [B]
- 92406
- 92407 [C] - 20 violations ⚠
- 92408 [C] - 2 violations
- 92410 [C] - 1 violation
- 92411 [B] - 16 violations
- 92412
- 92413
- 92414
- 92415 [B]
- 92418
- 92423
- 92424
- 92427
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 San Bernardino
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 San Bernardino
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
San Bernardino: Remediation Cost in Perspective
This section sets two area figures side by side for San Bernardino: the median home value and an estimated remediation cost. Here the estimate equals no more than 1% of that value, which places the city in the low tier; it is an area estimate, and the cost for any one property can be higher or lower.
Estimated remediation costs in San Bernardino can be compared with local home values. The $664–$1,515 estimated range can be set against the median property value; actual costs vary by home. Home values are 49% below the California average.
Protecting Children from Lead in San Bernardino
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.
1 ZIP code (6% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for San Bernardino
Historical NFIP data for San Bernardino contains 152 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $15,853. Among ZIP codes with claim records, 17% 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 $1,043 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.
What You Can Do in San Bernardino
- Test your water at home. City-level data shows averages - your tap may differ. Consider testing your home's tap water for lead, since household plumbing can affect its level.
- Install a certified water filter. For Revised Total Coliform Rule, listed in the water-quality records for San Bernardino: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for San Bernardino, CA