Laguna Woods, CA Water Safety: 66/100 (2026)
1 ZIP code · 3 water systems · Updated 2026-06-03
Laguna Woods's water quality grade in CA reflects a middle-ground assessment — service areas range from fully compliant to violation-flagged in current EPA records.
How Laguna Woods Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Laguna Woods Water
- Homes built before 1986: 93% — older plumbing may contain lead solder.
- Estimated remediation: $500 per household.
- CDC health risk index: 10.23.
Who Supplies Your Water in Laguna Woods
3 water systems are tracked federally in Laguna Woods, CA. The top 3 providers collectively serve most residential addresses, but because they operate independently, infrastructure maintenance standards and compliance histories differ from one service zone to another.
Overview
We track water quality and home safety data for 1 ZIP code in Laguna Woods, California (population ~17,342), covering 3 community water systems serving approximately 240,440 people region-wide.
No EPA violations recorded across any ZIP codes in Laguna Woods — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Laguna Woods: 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
Laguna Woods water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Laguna Woods
- 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 |
|---|---|---|---|
| 92637 | C | MOULTON NIGUEL WATER DISTRICT | 170,236 |
All ZIP Codes in Laguna Woods
- 92637 [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.
Health Outcomes in Laguna Woods
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
Housing & Infrastructure in Laguna Woods
With 93% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Reading the housing age data for Laguna Woods — median build year 1961 — the overriding implication is that the plumbing materials inside a typical home here reflect pre-1986 construction standards. In practical terms, that means lead-soldered copper joints are common across much of the housing stock. Where those materials are present, water can leach lead as it moves through joints — a pathway that corrosion control treatment under federal rules is designed to reduce, though it cannot eliminate lead risk where the plumbing materials themselves contain lead.
Over half of homes in Laguna Woods were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Laguna Woods Homeowners
Property equity in Laguna Woods runs well ahead of estimated remediation costs — a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Laguna Woods are relatively low compared to home values. The $300–$800 estimated range is a small fraction of median property value. Home values are 51% below the California average.
Lead Exposure Risk for Children in Laguna Woods
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.
93% of Laguna Woods housing dates to the pre-rule era, alongside aggregate readings hovering at the federal action mark — household-level confirmation through a draw-test kit fits 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 Laguna Woods
- 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. With 93% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Laguna Woods, CA