Green Valley Lake, CA: Lead Above EPA Limits — 54/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Across water systems in Green Valley Lake, EPA data shows a below-average compliance pattern for CA — health-based violations are on file in several areas, and checking the specific system serving your address is a practical first step for concerned residents.
How Green Valley Lake Compares
Data: EPA SDWIS Last verified: 2026-06-03
Green Valley Lake Water: The Quick Version
- Your city's water systems recorded 2 violations in the past 5 years.
- Average lead level: 0.0249 mg/L — exceeds the EPA action level of 0.015 mg/L.
- Homes built before 1986: 85% — older plumbing may contain lead solder.
- Estimated remediation: $7,000 per household.
- CDC health risk index: 11.58.
Water Systems Serving Green Valley Lake
Across Green Valley Lake, CA, residential water comes from 2 primary utilities rather than a single consolidated provider. Each system operates independently — managing its own distribution infrastructure, rate schedules, and EPA compliance filings. Federal records track 2 water systems in the area, with these top providers accounting for the majority of residential connections.
Overview
We track water quality and home safety data for 1 ZIP code in Green Valley Lake, California (population ~299), covering 2 community water systems serving approximately 5,313 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Green Valley Lake: D (54/100)
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
Green Valley Lake water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0249 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 ZIP code exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Total Coliform | Microbiological | 2 | 1 |
| Combined Radium | Radionuclides | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 92341 | D | 2 | 1 | Clawa |
All ZIP Codes in Green Valley Lake
- 92341 [D] — 2 violations ⚠
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.
CDC Health Data for Green Valley Lake
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
Key Contaminants Detected in Green Valley Lake
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Green Valley Lake's Housing Stock?
With 85% 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
The median home in Green Valley Lake was built in 1965 — a figure that places most of the city's residential stock in the era when lead solder was still standard in copper plumbing. Homes built before 1986 may have lead-soldered joints; those built before 1970 face the additional possibility of lead pipes in the service line itself.
Over half of homes in Green Valley Lake 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.
Green Valley Lake: Remediation Cost in Perspective
The equity-to-remediation ratio in Green Valley Lake is moderate — worth planning for but within reach for most property owners.
Remediation costs are moderate relative to home values in Green Valley Lake. The estimated $4,350–$10,000 range is manageable for most homeowners but still worth budgeting for. Home values are 50% below the California average.
Protecting Children from Lead in Green Valley Lake
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.
Locally in Green Valley Lake, 85% of housing comes from before the solder rule, and citywide monitoring has crossed the federal action mark. That joint signal keeps in-home tests and certified filtration at a household-level priority, particularly where small kids are present.
<strong>1 ZIP code</strong> (100% of the city) exceeds the EPA lead action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Climate-Related Water Risk for Green Valley Lake
Across the NFIP's long tracking period, Green Valley Lake shows 3 claims and 100% of ZIP codes within FEMA-designated flood zones — figures that place it in moderate flood exposure territory. At this level, the water-quality implications of flooding — contaminated wells, stressed treatment intake, distribution backflow — move from theoretical edge cases to genuine periodic risks, particularly during higher-severity events.
Green Valley Lake has a moderate flood history with 3 FEMA claims averaging $2,814 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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. Flood damage can add significantly to the estimated <strong>$7,000</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Green Valley Lake
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Total Coliform can reduce the most common contaminant found in Green Valley Lake's water.
- Check your home's plumbing. With 85% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Green Valley Lake, CA