Penngrove, CA: Lead Above EPA Limits — 68/100 (2026)
1 ZIP code · 7 water systems · Updated 2026-06-03
Penngrove, CA: mid-range safety grade, uneven compliance across service areas.
How Penngrove Compares
Data: EPA SDWIS Last verified: 2026-06-03
Penngrove Water: The Quick Version
- Your city's water systems recorded 1 violation in the past 5 years.
- Average lead level: 0.0185 mg/L — exceeds the EPA action level of 0.015 mg/L.
- Homes built before 1986: 68% — older plumbing may contain lead solder.
- Estimated remediation: $5,880 per household.
- CDC health risk index: 11.32.
Water Systems Serving Penngrove
Residential addresses in Penngrove, CA are served by 3 primary water providers out of 7 systems in federal records. Each system maintains separate infrastructure and files its own EPA compliance reports, so service conditions are not uniform across the city.
Overview
We track water quality and home safety data for 1 ZIP code in Penngrove, California (population ~3,628), covering 7 community water systems serving approximately 114,752 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Penngrove: C (68/100)
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
Penngrove water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0185 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 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 94951 | C | 1 | 0 | City of Petaluma, |
All ZIP Codes in Penngrove
- 94951 [C] — 1 violation
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 Penngrove
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 Penngrove
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Penngrove's Housing Stock?
With 68% 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
Viewed through the lens of construction era, Penngrove is predominantly an older city — a median build year of 1976 puts most of the residential inventory in the range where pre-1986 plumbing materials were the standard.
Over half of homes in Penngrove 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.
Penngrove: Remediation Cost in Perspective
In Penngrove, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Penngrove are relatively low compared to home values. The $3,920–$7,940 estimated range is a small fraction of median property value. Home values are 64% above the California average.
Protecting Children from Lead in Penngrove
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.
Throughout the multi-year monitoring window under Lead and Copper Rule sampling, citywide samples for Penngrove have moved past the regulatory action mark, and 68% of local stock comes from the pre-rule era. Both the housing inventory and the system data support active household-level reads as a practical step.
<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 Penngrove
Flood activity in Penngrove is neither negligible nor at the level of the highest-exposure areas in the NFIP dataset. The 4-claim record and 100% flood zone coverage suggest a community that has experienced recurrent events but has not faced the kind of sustained, severe exposure where water-supply contamination becomes a primary public health concern. It sits in a middle range where flood history merits inclusion in any complete local water quality picture.
Penngrove has a moderate flood history with 4 FEMA claims averaging $23,214 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>$5,880</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 Penngrove
- 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 Stage 1 DBP Rule can reduce the most common contaminant found in Penngrove's water.
- Check your home's plumbing. With 68% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Penngrove, CA