Yes, owning a tank in New Hampshire is legal but tightly controlled under state and municipal statutes. The New Hampshire Department of Environmental Services (NHDES) regulates aboveground storage tanks (ASTs) and underground storage tanks (USTs) under RSA 146-A and Env-Ws 1400, with local fire departments enforcing NFPA 30 standards. Recent 2026 amendments to Env-Ws 1403 require annual inspections for tanks exceeding 60 gallons, aligning with EPA’s federal UST regulations. Violations trigger penalties up to $25,000 per day under RSA 146-A:10.
Key Regulations for Owning a Tank in New Hampshire
- Registration Mandate: All ASTs and USTs must be registered with NHDES within 30 days of installation; failure to register incurs a $500 fine (Env-Ws 1401.03).
- Spill Prevention & Secondary Containment: Tanks storing hazardous substances require double-walled construction or impervious containment with 110% capacity (Env-Ws 1402.04). Granite State municipalities like Portsmouth enforce additional setback rules for residential properties.
- Inspection & Reporting: Tanks over 1,100 gallons require certified inspections every 3 years; smaller tanks face biennial checks. NHDES’ 2026 digital reporting portal (eTank) streamlines compliance but mandates real-time leak detection system alerts.
Local fire marshals may impose stricter fire code requirements, particularly in high-density zones. Municipalities such as Manchester and Nashua require permits for tank modifications, with fees ranging from $150 to $500. Consult NHDES’ Tank Compliance Guide (2025) for exemptions, including temporary agricultural or emergency-use tanks under 500 gallons.