Rockingham County, New Hampshire — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Rockingham County, NH?
In Rockingham County, New Hampshire, public U.S. EPA records track 5,891 regulated facilities (#1 of 21 in New Hampshire), including 22 (0.4%) High-Risk sites and $7,367,074 in federal penalties. Countywide due diligence also covers 613 Safe Drinking Water (SDWIS) facilities, 873 Clean Water NPDES permits, 3 FEMA Federal Disaster Declarations (2 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 1 — High Potential (> 4.0 pCi/L).
Rockingham County, NH 6-in-1 Flood, Soil Foundation, Tap Water & Radon Signals
🔒 Parcel-Level Soil LEP %, Water Table Depth & Flood Zone Require Street Address Scan📊 Rockingham County, NH Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Rockingham County
ZIP Codes in Rockingham County
Top EPA Regulated Facilities in Rockingham County, 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 |
|---|---|---|---|---|
| 🔒 Locked High-Risk EPA Enforcement Record #1 | 🔒 Exact Street & Parcel Redacted • PORTSMOUTH, NH (ZIP 03801 Sector) | HIGH (66/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • HAMPTON, NH (ZIP 03842 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • NEW CASTLE, NH (ZIP 03854 Sector) | HIGH (64/100) | Significant Violation (5 qtrs NC) | 🔒 5 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • LONDONDERRY, NH (ZIP 03053 Sector) | HIGH (64/100) | Significant Violation (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • NORTHWOOD, NH (ZIP 03261 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • EXETER, NH (ZIP 03833 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • LONDONDERRY, NH (ZIP 03053 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • PLAISTOW, NH (ZIP 03865 Sector) | HIGH (64/100) | Significant Violation (3 qtrs NC) | 🔒 3 Qtrs Non-Compliance • Unlock → |
| MENARD AUTOMOTIVE SALES FREE PREVIEW (LOW RISK) | 149 LANE RD, CHESTER, NH 03036 | LOW (24/100) | No Violation Identified (0 qtrs NC) | $0 |
| DOHERTY JOE RESIDENCE FREE PREVIEW (LOW RISK) | 39 MARSHALL RD, KINGSTON, NH 03848 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| BODYSMITH FREE PREVIEW (LOW RISK) | 14 SAGAMORE RD, PORTSMOUTH, NH 03801 | LOW (17/100) | No Violation Identified (0 qtrs NC) | $0 |
| SEABROOK HIGHWAY DEPT TOWN OF FREE PREVIEW (LOW RISK) | 43 RAILROAD AVE, SEABROOK, NH 03874 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Rockingham County, New Hampshire Environmental Due Diligence
How many EPA-regulated environmental sites are in Rockingham County, New Hampshire?
Public U.S. EPA records track 5,891 regulated facilities in Rockingham County, New Hampshire (ranking #1 of 21 jurisdictions in NH). Of those, 22 (0.4%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 56 (1.0%) have active non-compliance quarters.
Which ZIP codes and cities in Rockingham County have the highest regulated facility density?
Within Rockingham County, the highest concentrations of EPA-tracked facilities are located in ZIP 03801 (Portsmouth, 994 sites), ZIP 03079 (Salem, 739 sites), ZIP 03053 (Londonderry, 633 sites), spanning municipal corridors including Portsmouth (858 sites), Salem (748 sites), Londonderry (643 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Rockingham County?
Across Rockingham County, 5,020 facilities (85.2% 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 Rockingham County, NH?
Geologic indoor air screening places Rockingham County in EPA Zone 1 — High Potential (> 4.0 pCi/L). Counties in EPA Radon Zone 1 have a predicted average indoor radon screening level greater than 4.0 pCi/L (the EPA action threshold). Short-term or continuous indoor radon testing is strongly recommended prior to closing.
How many drinking water systems (SDWIS), impaired water bodies, and FEMA flood disasters are recorded in Rockingham County, NH?
Federal records track 613 Safe Drinking Water (SDWIS) facilities, 873 Clean Water Act NPDES permits, and 797 impaired water dischargers in Rockingham County, alongside 3 historical FEMA federal disaster declarations (2 flood/storm events).
Does Rockingham County, NH have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Rockingham County indicates a LOW shrink-swell risk signal and steel pipe corrosivity rated High. Run a street address scan to unlock the exact parcel soil series, LEP %, and water table depth.