Portstmouth, New Hampshire — Property Hazard, Flood Zone, Soil, Water & Market Guide
What Are the Major Property, Flood, Soil & Environmental Risks in Portstmouth, NH?
Public U.S. EPA records track 1 regulated facilities in Portstmouth, New Hampshire (Rockingham County), including 0 High-Risk sites (0.0%) and 0 active violators. In addition to industrial waste, Portstmouth properties are screened for Tap Water & Watershed Permits (1 systems), USDA Soil Foundation Shrink-Swell (LOW signal), 3 County FEMA Disaster Declarations, and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Portstmouth, NH 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Portstmouth, NH Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 03, 2026)ZIP Codes in Portstmouth, NH
Highest-Scored EPA Regulated Facilities in Portstmouth, NH
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 |
|---|---|---|---|---|
| PEASE DEVELOPMENT AUTHORITY FREE PREVIEW (LOW RISK) | 680 PEVERLY RD., PORTSTMOUTH, NH 03801 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Portstmouth, New Hampshire Environmental Risk & Radon
How many EPA-regulated facilities are in Portstmouth, NH?
U.S. EPA records track 1 regulated facilities in Portstmouth, New Hampshire, including 0 high-risk sites (0.0%), 0 active violators (0.0%), and 0 RCRA hazardous waste handlers (0.0%).
Which ZIP codes in Portstmouth, NH have the most EPA-tracked sites?
Within Portstmouth, regulated facilities are primarily concentrated across local postal codes.
How can I check a specific house or commercial property in Portstmouth, NH?
Enter the exact street address in Portstmouth 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 Portstmouth, NH and how many EPA water permits exist?
In Portstmouth, NH, federal registries track 0 Safe Drinking Water (SDWIS) facilities, 1 Clean Water Act NPDES permits, and 1 impaired water body dischargers.
What is the soil foundation risk and FEMA flood disaster history in Portstmouth, NH?
USDA regional soil screening for Portstmouth indicates a LOW shrink-swell foundation signal, and Rockingham County has recorded 3 federal FEMA disaster declarations (2 flood/severe storm declarations). Run an address scan to unlock exact parcel soil LEP %, water table depth, and flood zone.