Hillsborough, California — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Hillsborough, CA?
Public U.S. EPA records track 337 regulated facilities in Hillsborough, California (San Mateo County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Hillsborough properties are screened for Tap Water & Watershed Permits (15 systems), USDA Soil Foundation Shrink-Swell (MODERATE signal), 4 County FEMA Disaster Declarations, and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Hillsborough, CA 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Hillsborough, CA Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)ZIP Codes in Hillsborough, CA
Highest-Scored EPA Regulated Facilities in Hillsborough, CA
100% of High-Risk & penalized facilities have facility names, street names, and dockets redacted (3 Low-Risk compliant records shown as Free Previews).
| Facility Name / Hazard Type | Sector Location (Street Redacted) | Risk Tier & Score | Compliance Status | Enforcement / Unlock |
|---|---|---|---|---|
| 🔒 Locked Regulated EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • HILLSBOROUGH, CA (ZIP 94010 Sector) | MODERATE (34/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| PG AND E HYDROTEST TIM 123 12 LOCATION D FREE PREVIEW (LOW RISK) | 6677 GOLF COURSE DR, HILLSBOROUGH, CA 94010 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| HILLSBOROUGH CITY SCHOOL DISTRICT SOUTH SCHOOL FREE PREVIEW (LOW RISK) | 2600 RALSTON AVE, HILLSBOROUGH, CA 94010 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| PGE - D-1569A HILLSBOROUGH FREE PREVIEW (LOW RISK) | LAT/LONG_USED, HILLSBOROUGH, CA 94010 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| CRYSTAL SPRINGS UPLANDS SCHOOL FREE PREVIEW (LOW RISK) | 400 UPLANDS DRIVE, HILLSBOROUGH, CA 94010 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Hillsborough, California Environmental Risk & Radon
How many EPA-regulated facilities are in Hillsborough, CA?
U.S. EPA records track 337 regulated facilities in Hillsborough, California, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 322 RCRA hazardous waste handlers (95.5%).
Which ZIP codes in Hillsborough, CA have the most EPA-tracked sites?
Within Hillsborough, regulated facilities are primarily concentrated across local postal codes.
How can I check a specific house or commercial property in Hillsborough, CA?
Enter the exact street address in Hillsborough into the FullPropertyReport radius scanner to screen all EPA ECHO, FRS, RCRA, TRI, USDA soil foundation shrink-swell, drinking water (SDWIS), FEMA flood zone, and county radon records within 0.5 to 3.0 miles.
Is tap water safe in Hillsborough, CA and how many EPA water permits exist?
In Hillsborough, CA, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 15 Clean Water Act NPDES permits, and 2 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Hillsborough, CA?
USDA regional soil screening for Hillsborough indicates a MODERATE shrink-swell foundation signal, and San Mateo County has recorded 4 federal FEMA disaster declarations (4 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.