Merrimack County, New Hampshire — Property Hazard, Flood Zone, Soil, Water & EPA Guide
What Are the Flood, Soil Foundation & EPA Risks in Merrimack County, NH?
In Merrimack County, New Hampshire, public U.S. EPA records track 321 regulated facilities (#14 of 21 in New Hampshire), including 3 (0.9%) High-Risk sites and $202,208 in federal penalties. Countywide due diligence also covers 5 Safe Drinking Water (SDWIS) facilities, 267 Clean Water NPDES permits, 9 FEMA Federal Disaster Declarations (8 flood/storm), USDA Soil Foundation Shrink-Swell (LOW signal), and EPA Zone 2 — Moderate Potential (2.0 – 4.0 pCi/L).
Merrimack 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📊 Merrimack County, NH Statistical Risk Graphs & Multi-Hazard Telemetry
SOURCE: EPA ECHO • USDA SSURGO • FEMA NRI • USGS (November 05, 2026)Municipalities in Merrimack County
ZIP Codes in Merrimack County
Top EPA Regulated Facilities in Merrimack 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 • HOOKSETT, NH (ZIP 03106 Sector) | HIGH (66/100) | Significant Violation (9 qtrs NC) | 🔒 9 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • BOW, NH (ZIP 03304 Sector) | HIGH (64/100) | Resolved / Historical Non-Compliance (7 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • TILTON, NH (ZIP 03276 Sector) | HIGH (64/100) | Significant Violation (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • ALLENSTOWN, NH (ZIP 03275 Sector) | MODERATE (50/100) | Violation Identified (2 qtrs NC) | 🔒 2 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HOOKSETT, NH (ZIP 03106 Sector) | MODERATE (35/100) | Violation Identified (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • FRANKLIN, NH (ZIP 03235 Sector) | MODERATE (32/100) | No Violation Identified (0 qtrs NC) | 🔒 Active Permit Dossier • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • HOOKSETT, NH (ZIP 03106 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (1 qtrs NC) | 🔒 1 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked Regulated EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • PEMBROKE, NH (ZIP 03275 Sector) | MODERATE (30/100) | Resolved / Historical Non-Compliance (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| MARMON AEROSPACE AND DEFENSE FACILITY FREE PREVIEW (LOW RISK) | 18 LEGENDS DRIVE, HOOKSETT, NH 03106 | LOW (23/100) | No Violation Identified (0 qtrs NC) | $0 |
| MERCHANTS AUTOMOTIVE GROUP FREE PREVIEW (LOW RISK) | 1278 HOOKSETT RD, HOOKSETT, NH 03106 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| BOYCE HIGHLANDS FURNITURE COMPANY FREE PREVIEW (LOW RISK) | 14 WHITNEY RD, CONCORD, NH 03301 | LOW (19/100) | No Violation Identified (0 qtrs NC) | $0 |
| SITE PLAN FREE PREVIEW (LOW RISK) | NH ROUTE 4, CHICHESTER, NH 03258 | LOW (18/100) | No Violation Identified (0 qtrs NC) | $0 |
Frequently Asked Questions — Merrimack County, New Hampshire Environmental Due Diligence
How many EPA-regulated environmental sites are in Merrimack County County, New Hampshire?
Public U.S. EPA records track 321 regulated facilities in Merrimack County County, New Hampshire (ranking #14 of 21 jurisdictions in NH). Of those, 3 (0.9%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 5 (1.6%) have active non-compliance quarters.
Which ZIP codes and cities in Merrimack County County have the highest regulated facility density?
Within Merrimack County County, the highest concentrations of EPA-tracked facilities are located in ZIP 03301 (Concord, 961 sites), ZIP 03242 (Henniker, 77 sites), ZIP 03233 (New London, 8 sites), spanning municipal corridors including Concord (973 sites), Henniker (78 sites), Hill (9 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Merrimack County County?
Across Merrimack County County, 6 facilities (1.9% 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 Merrimack County County, NH?
Geologic indoor air screening places Merrimack County 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 Merrimack County County, NH?
Federal records track 5 Safe Drinking Water (SDWIS) facilities, 267 Clean Water Act NPDES permits, and 263 impaired water dischargers in Merrimack County County, alongside 9 historical FEMA federal disaster declarations (8 flood/storm events).
Does Merrimack County, NH have expansive clay soil or foundation risk?
USDA regional soil engineering screening for Merrimack 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.