Merrimack County, New Hampshire — Flood Zone, Water Quality, Soil Foundation, Radon & EPA Hazards
In Merrimack County, New Hampshire, public U.S. EPA records track 2,721 regulated facilities (#3 of 21 in New Hampshire), including 10 (0.4%) High-Risk sites and $1,892,495 in federal penalties. Countywide due diligence also covers 263 Safe Drinking Water (SDWIS) facilities, 381 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 01, 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 • WARNER, NH (ZIP 03278 Sector) | HIGH (68/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #2 | 🔒 Exact Street & Parcel Redacted • CONCORD, NH (ZIP 03301 Sector) | HIGH (64/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #3 | 🔒 Exact Street & Parcel Redacted • EPSOM, NH (ZIP 03234 Sector) | HIGH (64/100) | No Violation Identified (0 qtrs NC) | 🔒 $100,000+ Federal Fine • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #4 | 🔒 Exact Street & Parcel Redacted • BOW, NH (ZIP 03304 Sector) | HIGH (64/100) | Significant Violation (11 qtrs NC) | 🔒 11 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #5 | 🔒 Exact Street & Parcel Redacted • HENNIKER, NH (ZIP 03242 Sector) | HIGH (64/100) | Significant Violation (7 qtrs NC) | 🔒 7 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #6 | 🔒 Exact Street & Parcel Redacted • HOOKSETT, NH (ZIP 03106 Sector) | HIGH (64/100) | Significant Violation (6 qtrs NC) | 🔒 6 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #7 | 🔒 Exact Street & Parcel Redacted • CONCORD, NH (ZIP 03301 Sector) | HIGH (64/100) | Significant Violation (10 qtrs NC) | 🔒 10 Qtrs Non-Compliance • Unlock → |
| 🔒 Locked High-Risk EPA Enforcement Record #8 | 🔒 Exact Street & Parcel Redacted • BOW, NH (ZIP 03304 Sector) | HIGH (64/100) | Significant Violation (4 qtrs NC) | 🔒 4 Qtrs Non-Compliance • Unlock → |
| RICKY GS ON SITE REPAIR FREE PREVIEW (LOW RISK) | 46 MAIN ST, ANDOVER, NH 03216 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| OWENS MARINE INC FREE PREVIEW (LOW RISK) | 1316 HOOKSETT RD, HOOKSETT, NH 03106 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| PITTSFIELD BOTTLED GAS CO FREE PREVIEW (LOW RISK) | CHICHESTER RD, LOUDON, NH 03307 | LOW (16/100) | No Violation Identified (0 qtrs NC) | $0 |
| TRI STATE MOTOR TRANSIT FREE PREVIEW (LOW RISK) | CRNR RIDGE & AIRPORT, CONCORD, NH 03301 | LOW (16/100) | 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, New Hampshire?
Public U.S. EPA records track 2,721 regulated facilities in Merrimack County, New Hampshire (ranking #3 of 21 jurisdictions in NH). Of those, 10 (0.4%) are classified in the High-Risk tier due to significant enforcement or chemical release history, and 27 (1.0%) have active non-compliance quarters.
Which ZIP codes and cities in Merrimack County have the highest regulated facility density?
Within Merrimack County, the highest concentrations of EPA-tracked facilities are located in ZIP 03106 (Hooksett, 401 sites), ZIP 03276 (Northfield, 202 sites), ZIP 03235 (Franklin, 198 sites), spanning municipal corridors including Hooksett (414 sites), Bow (209 sites), Franklin (195 sites).
How many hazardous waste (RCRA) and toxic release (TRI) handlers operate in Merrimack County?
Across Merrimack County, 2,325 facilities (85.4% 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, NH?
Geologic indoor air screening places Merrimack 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, NH?
Federal records track 263 Safe Drinking Water (SDWIS) facilities, 381 Clean Water Act NPDES permits, and 365 impaired water dischargers in Merrimack 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.