Rancho Santa Fe, CA Home Safety: Home Safety 92/100
2 ZIP codes · 3 water systems · Updated
ZipCheckup grade for Rancho Santa Fe: A.
Checked records flag no major concern; missing data is unknown.
Rancho Santa Fe, CA: a top-two-band grade.
How Rancho Santa Fe Compares
Data: EPA SDWIS
Rancho Santa Fe Water: The Quick Version
- Average of reported 90th-percentile lead results: 0.0017 mg/L.
- Homes built before 1986: 49% - older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- Health risk index (ZipCheckup composite of CDC data): 10.18.
Water Systems Serving Rancho Santa Fe
Federal records list 3 water systems tied to Rancho Santa Fe, CA. Of those, 3 are the primary providers, meaning service conditions, rate structures, and compliance histories can differ depending on where a property sits.
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Overview
We track home safety data for 2 ZIP codes in Rancho Santa Fe, California (population ~9,460), covering 3 community water systems serving approximately 1,493,415 people region-wide. The EPA snapshots used for this build directly map water systems to 2 of 2 ZIP codes.
The available EPA record reports 0 violations for 2 ZIP codes with a reported violation count.
Home Safety Score
Average Home Safety Score for Rancho Santa Fe: A (92/100)
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
Rancho Santa Fe water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0017 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.
Areas with No Violations
All ZIP Codes in Rancho Santa Fe
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 Rancho Santa Fe
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
How Old Is Rancho Santa Fe's Housing Stock?
With 49% 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 Rancho Santa Fe can ask a simple question of any home: was it built before 1986? The citywide median of 1983 will not answer it.
Most homes in Rancho Santa Fe 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.
Rancho Santa Fe: Remediation Cost in Perspective
Measured against the median home value, the estimated cost of fixing the issues flagged for Rancho Santa Fe lands in the lowest of the three tiers this page uses.
Estimated remediation costs in Rancho Santa Fe can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 171% above the California average.
Protecting Children from Lead in Rancho Santa Fe
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.
Historical Flood-Claim Evidence for Rancho Santa Fe
Historical NFIP data for Rancho Santa Fe contains 36 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $10,606. Among ZIP codes with claim records, 0% 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 $500 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 Rancho Santa Fe, CA