Loma Linda, CA: Lead Above EPA Action Level - Home Safety 58/100
3 ZIP codes · 5 water systems · Updated
ZipCheckup grade for Loma Linda: C.
A mixed picture - some signals here are worth your attention.
For residents of Loma Linda, CA, a C is a prompt to look up the report for their own ZIP code rather than a verdict on their tap.
How Loma Linda Compares
Data: EPA SDWIS
What You Should Know About Loma Linda Water
- Your city's water systems recorded 2 violations since 2021.
- Average of reported 90th-percentile lead results: 0.085 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Homes built before 1986: 32% - older plumbing may contain lead solder.
- Estimated remediation: $2,390 per household.
- Health risk index (ZipCheckup composite of CDC data): 11.58.
Who Supplies Your Water in Loma Linda
Because each listed system has its own federal record, violations at one of the 3 shown below do not apply to the others among the 5 tied to Loma Linda, CA.
- C
- C
- C
Overview
We track home safety data for 3 ZIP codes in Loma Linda, California (population ~23,470), covering 5 community water systems serving approximately 379,712 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 3 ZIP codes.
2 of 2 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.
Home Safety Score
Average Home Safety Score for Loma Linda: C (58/100)
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
Loma Linda water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0850 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 2 ZIP codes with known status exceed the EPA lead action level
Radon Risk
3 of 3 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 |
|---|---|---|---|
| Trichloroethylene | Organic | 3 | 2 |
| Nitrate | Inorganic | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92354 | C | 2 | 0 | City of Loma Linda, |
| 92350 | C | 1 | 0 | City of Loma Linda, |
All ZIP Codes in Loma Linda
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.
Health Outcomes in Loma Linda
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
Top Contaminants in Loma Linda Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Loma Linda
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Buyers and renters in Loma Linda can ask a simple question of any home: was it built before 1986? The citywide median of 1988 will not answer it.
Most homes in Loma Linda 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.
Cost Context: What Remediation Means for Loma Linda Homeowners
Because the median home value in Loma Linda is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.
Estimated remediation costs in Loma Linda can be compared with local home values. The $1,560–$3,320 estimated range can be set against the median property value; actual costs vary by home. Home values are 27% below the California average.
Lead Exposure Risk for Children in Loma Linda
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.
Households with young children in Loma Linda have two area numbers to weigh. One is the mean of 90th-percentile lead values reported for local ZIP codes, which is at or above 0.010 mg/L; the other is the 32% share of housing that dates from before 1986. Neither describes one home, and sending a tap sample to an accredited laboratory is how a family measures its own lead level.
1 ZIP code (33% 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 NFIP Claim Context in Loma Linda
Historical NFIP data for Loma Linda contains 13 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $5,849. 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 $2,390 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 Loma Linda
- 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 Trichloroethylene, listed in the water-quality records for Loma Linda: 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. With 32% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Loma Linda, CA