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Alameda County, California — Property Hazard, Flood Zone, Soil, Water & EPA Guide

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What Are the Flood, Soil Foundation & EPA Risks in Alameda County, CA?

In Alameda County, California, public U.S. EPA records track 32,521 regulated facilities (#5 of 136 in California), including 38 (0.1%) High-Risk sites and $22,897,461 in federal penalties. Countywide due diligence also covers 30 Safe Drinking Water (SDWIS) facilities, 1,074 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (3 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).

Total EPA Sites (#5/136)
32,521
High-Risk (0.1% vs 0.3% State)
38
Active Violators (0.1%)
46
Drinking & Clean Water
1,104
Federal Penalties
$22,897,461

Alameda County, CA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals

🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan
🌊 Flood Zone & FEMA Disaster History
3 County FEMA Declarations (3 Flood/Storm)
🔒 Exact Parcel Flood Zone (AE / VE / X) & SFHA Insurance Requirement Locked
Check Property Flood Zone →
🪨 USDA Soil, Foundation & Water Table
Shrink-Swell Risk Signal: LOW • Pipe Corrosion: Low
🔒 Exact USDA Soil Series, Linear Extensibility (LEP %) & Water Table Depth (ft) Locked
Unlock Parcel Soil Test →
🚰 Tap Water (SDWIS) & PFAS Check
30 SDWIS Systems • 1,074 NPDES Permits
🔒 224 Impaired Water (303d) & 119 Violation Dockets Locked
Unlock Utility Violation Log →
☢️ EPA Radon & Karst Sinkhole
EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L)
Low / Non-Karst Bedrock & Alluvial Formation
🔒 0.25-Mi Vapor Intrusion Buffer Locked

📊 Alameda County, CA Statistical Risk Graphs & Multi-Hazard Telemetry

SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)
1. County Regulatory & Water Program Mix
RCRA Hazardous Waste Generators 32,182 (99.0%)
Clean Water (NPDES) & Drinking Water (SDWIS) 1,104 (3.4%)
Active EPA Non-Compliance Dockets 46 (0.1%)
High-Risk Enforcement Facilities 38 (0.1%)
2. FEMA NRI & USGS Hazard Index (1–10) Very High (99.8/100)
🌊 Flood Exposure 9/10 • Very High Hazard
🔥 Wildfire Hazard 7/10 • High Hazard
☀️ Extreme Heat 7/10 • High Hazard
🌪️ Severe Wind / Storm 5/10 • Moderate Hazard
🫨 USGS Earthquake 9/10 • Very High Hazard
3. County vs. State & National Benchmark
Alameda County High-Risk % 0.1%
California (CA) Statewide Avg 0.3%
U.S. National EPA Baseline 3.6%
Unlock Street-Level Dossier: Full report reveals unredacted facility names, distances in feet, exact USDA soil LEP %, water table depth, and parcel flood zone.
🔒 Scan a Property Address in Alameda County →

ZIP Codes in Alameda County

94538 — Fremont (2,087) 94501 — Alameda (1,770) 94577 — San Leandro (1,628) 94545 — Hayward (1,535) 94611 — Piedmont (1,300) 94550 — Livermore (1,275) 94536 — Fremont (1,254) 94544 — Hayward (1,151) 94551 — Livermore (1,094) 94587 — Union City (1,055) 94539 — Fremont (1,026) 94607 — Oakland (1,023) 94566 — Pleasanton (1,004) 94560 — Newark (983) 94610 — Oakland (948) 94568 — Dublin (901) 94608 — Oakland (892) 94546 — Castro Valley (882) 94588 — Pleasanton (854) 94541 — Hayward (792) 94602 — Oakland (739) 94605 — Oakland (727) 94710 — Berkeley (703) 94601 — Oakland (700) 94621 — Oakland (656) 94606 — Oakland (560) 94707 — Berkeley (557) 94708 — Berkeley (544) 94612 — Oakland (508) 94619 — Oakland (503) 94618 — Oakland (500) 94609 — Oakland (441) 94705 — Berkeley (429) 94706 — Albany (426) 94578 — San Leandro (423) 94580 — San Lorenzo (398) 94704 — Berkeley (386) 94702 — Berkeley (341) 94603 — Oakland (319) 94703 — Berkeley (259) 94555 — Fremont (251) 94502 — Alameda (238) 94709 — Berkeley (197) 94579 — San Leandro (183) 94542 — Hayward (145) 94720 — Berkeley (118) 94514 — Byron (108) 94552 — Castro Valley (101) 94586 — Sunol (89) 94613 — Oakland (12) 94604 — Oakland (12) 94614 — Oakland (11) 94522 — Castro Valley (9) 94701 — Berkeley (7) 94537 — Fremont (7) 94540 — Hayward (7) 95438 — Fremont (5) 94615 — Oakland (5) 94557 — San Leandro (5) 94451 — Livermore (4) 94662 — Emeryville (3) 94554 — Hayward (3) 94625 — Oakland (3) 94857 — Union City (3) 94078 — Berkeley (2) 94532 — Fremont (2) 94543 — Hayward (2) 94045 — Hayward (2) 94450 — Livermore (2) 94831 — Livermore (2) 94620 — Oakland (2) 94617 — Oakland (2) 94976 — Oakland (2) 94616 — Oakland (2) 94696 — Oakland (2) 94650 — Oakland (2) 94905 — Oakland (2) 95477 — San Leandro (2) 95487 — Union City (2) 94907 — Albany (1)

Top EPA Regulated Facilities in Alameda County, CA

100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).

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Facility Name / Hazard Type Sector Location (Street Redacted) Risk Tier & Score Compliance Status Enforcement / Unlock
🔒 Locked High-Risk EPA Enforcement Record #1 🔒 Exact Street & Parcel Redacted • NEWARK, CA (ZIP 94560 Sector) HIGH (97/100) Significant Violation (11 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #2 🔒 Exact Street & Parcel Redacted • LIVERMORE, CA (ZIP 94551 Sector) HIGH (97/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #3 🔒 Exact Street & Parcel Redacted • FREMONT, CA (ZIP 94538 Sector) HIGH (91/100) Significant Violation (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #4 🔒 Exact Street & Parcel Redacted • SUNOL, CA (ZIP 94586 Sector) HIGH (88/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #5 🔒 Exact Street & Parcel Redacted • LIVERMORE, CA (ZIP 94550 Sector) HIGH (85/100) Significant Violation (12 qtrs NC) 🔒 Federal Penalty on File • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #6 🔒 Exact Street & Parcel Redacted • OAKLAND, CA (ZIP 94607 Sector) HIGH (77/100) Violation Identified (12 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #7 🔒 Exact Street & Parcel Redacted • OAKLAND, CA (ZIP 94607 Sector) HIGH (74/100) Significant Violation (12 qtrs NC) 🔒 $10,000+ Federal Fine • Unlock →
🔒 Locked High-Risk EPA Enforcement Record #8 🔒 Exact Street & Parcel Redacted • OAKLAND, CA (ZIP 94607 Sector) HIGH (72/100) Violation (2 qtrs NC) 🔒 $100,000+ Federal Fine • Unlock →
PACKARD CHILDREN'S HEALTH ALLIANCE FREE PREVIEW (LOW RISK) 1134 MURRIETA BLVD STE A, LIVERMORE, CA 94550 LOW (17/100) No Violation Identified (0 qtrs NC) $0
TESLA INC FREE PREVIEW (LOW RISK) 31353 HUNTWOOD AVE, HAYWARD, CA 94544 LOW (17/100) No Violation Identified (0 qtrs NC) $0
ISOMEDIA LLC FREE PREVIEW (LOW RISK) 41380 CHRISTY ST, FREMONT, CA 94538 LOW (16/100) No Violation Identified (0 qtrs NC) $0
COLGATE PALMOLIVE CO FREE PREVIEW (LOW RISK) 2700 SEVENTH ST, BERKELEY, CA 94710 LOW (16/100) No Violation Identified (0 qtrs NC) $0
🔒 + 32,509 Additional Regulated & Enforcement Records in Alameda County Redacted from Public Directory Run 1-Mile Property Scan to Unlock All Records →

Frequently Asked Questions — Alameda County, California Environmental Due Diligence

How many EPA-regulated environmental sites are in Alameda County, California?

Public U.S. EPA records track 32,521 regulated facilities in Alameda County, California (ranking #5 of 136 jurisdictions in CA). Of those, 38 (0.1%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 46 (0.1%) have active non-compliance quarters.

Which ZIP codes and cities in Alameda County have the highest regulated facility density?

Within Alameda County, the highest concentrations of EPA-tracked facilities are located in ZIP 94538 (Fremont, 2,087 sites), ZIP 94501 (Alameda, 1,770 sites), ZIP 94577 (San Leandro, 1,628 sites), spanning municipal corridors including Oakland (8,814 sites), Fremont (4,641 sites), Hayward (3,641 sites).

How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Alameda County?

Across Alameda County, 32,182 facilities (99.0% of regulated sites) are registered Resource Conservation and Recovery Act (RCRA) hazardous waste generators or handlers, and 0 industrial sites report toxic chemical releases to the EPA Toxics Release Inventory (TRI).

What is the EPA Radon Zone classification for Alameda County, CA?

Geologic indoor air screening places Alameda County in EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L). Counties in EPA Radon Zone 2 have a predicted average indoor radon level between 2.0 and 4.0 pCi/L. Testing basement or ground-floor living areas is recommended during home inspection.

How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Alameda County, CA?

Federal records track 30 Safe Drinking Water (SDWIS) facilities, 1,074 Clean Water Act NPDES permits, and 224 impaired water dischargers in Alameda County, alongside 3 historical FEMA federal disaster declarations (3 flood/storm events).

Does Alameda County, CA have expansive clay soil or foundation risk?

USDA regional soil engineering screening for Alameda County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated Low. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.

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