Ladera Ranch, CA Water Safety: 66/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Compared to top-scoring cities in CA, Ladera Ranch lands in the middle tier — some water systems meet standards cleanly, others carry documented violations, and performance can vary significantly across service areas.
How Ladera Ranch Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Ladera Ranch Residents
- Homes built before 1986: 4% — older plumbing may contain lead solder.
- CDC health risk index: 10.23.
Ladera Ranch's Water Providers
Ladera Ranch, CA is covered by 2 major water utilities out of 2 federally tracked systems, each managing its own pipes, treatment processes, and EPA filings. What a household gets from the tap depends on which provider's system serves that address.
Overview
We track water quality and home safety data for 1 ZIP code in Ladera Ranch, California (population ~35,019), covering 2 community water systems serving approximately 207,973 people region-wide.
No EPA violations recorded across any ZIP codes in Ladera Ranch — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Ladera Ranch: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Ladera Ranch water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Ladera Ranch
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 92694 | C | SANTA MARGARITA WATER DISTRICT-ID9 | 39,684 |
All ZIP Codes in Ladera Ranch
- 92694 [C]
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
Updated daily.
Ladera Ranch Community Health Snapshot
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
Ladera Ranch Infrastructure Age
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
Newer construction dominates Ladera Ranch's residential inventory, as reflected in a median build year of 2002. The practical implication is that lead-soldered copper plumbing joints — a pre-1986 standard now federally prohibited — are an exception rather than the rule in this city, though they remain present in the older fraction of the housing stock.
Most homes in Ladera Ranch 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.
Ladera Ranch: Lead Risk & Vulnerable Populations
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.
Whenever aggregate samples pass the federal action benchmark and pre-rule housing — 4% in Ladera Ranch — represents a smaller fraction, lead occupies a lower priority on the local picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Ladera Ranch
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- 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 Ladera Ranch, CA