Aliso Viejo, CA Home Safety: Home Safety 92/100
2 ZIP codes · 2 water systems · Updated
ZipCheckup grade for Aliso Viejo: A.
No federal data flags a major home-safety concern for this ZIP.
Throughout Aliso Viejo and across its water systems, EPA compliance data for CA shows above-average performance - violations are minimal, none of the tracked systems have recorded repeated MCL exceedances in recent cycles, and the safety picture has held steady across multiple reporting periods.
How Aliso Viejo Compares
Data: EPA SDWIS
What You Should Know About Aliso Viejo Water
- Average lead level: 0.0008 mg/L.
- Estimated remediation: $1,700 per household.
- CDC health risk index: 10.23.
Who Supplies Your Water in Aliso Viejo
At present, 2 utilities serve the bulk of Aliso Viejo, CA's residential water connections out of 2 systems active in the area, spread across independent providers with separate infrastructure and compliance obligations.
- A
- A
Overview
We track home safety data for 2 ZIP codes in Aliso Viejo, California (population ~52,645), covering 2 community water systems serving approximately 222,036 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.
The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.
Home Safety Score
Average Home Safety Score for Aliso Viejo: 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
Aliso Viejo water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0008 mg/L (EPA action level: 0.015 mg/L)
- 0 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 2 ZIP codes
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 92656 | A | Moulton Niguel Water District | 170,236 |
All ZIP Codes in Aliso Viejo
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 Aliso Viejo
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
Cost Context: What Remediation Means for Aliso Viejo Homeowners
What does remediation cost in financial context for Aliso Viejo homeowners? Proportionally very little - the equity share here is low, and addressing documented issues is a manageable planning question rather than a material financial burden.
Remediation costs in Aliso Viejo are relatively low compared to home values. The $1,100–$2,600 estimated range is a small fraction of median property value. Home values are 15% above the California average.
Lead Exposure Risk for Children in Aliso Viejo
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.
Lead risk in Aliso Viejo appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Aliso Viejo
Historical NFIP data for Aliso Viejo contains 4 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $8,576. 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 <strong>$1,700</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 Aliso Viejo, CA