New Hampshire Water Well Depth & Drilling Cost Guide
Authoritative hydrogeological intelligence for New Hampshire. Regulated by the New Hampshire Department of Environmental Services (NHDES). The statewide median drilling depth is 285 feet (ranging 80–650 ft) with an average drilling cost of $52 per foot ($38 to $85/ft).
Quick Hydrogeological Fact Sheet: New Hampshire
To reach potable water in New Hampshire, residential wells require drilling an average of 285 feet deep. Total turnkey installation costs average $16,200 USD for a completed 6-inch casing well, 1.5 HP submersible pump, pressure tank, and state permits. The standing static water table sits at approximately 35 feet below surface level, producing a reliable average flow rate of 8 GPM across the primary Crystalline Bedrock Aquifers.
New Hampshire County-Level Well Logs & Average Depths
Official USGS hydrogeological monitoring stations, static levels, and driller completion records.
| County Name | Median Depth (ft) | Avg Cost / Foot | Typical Yield | Primary Aquifer | Local Action |
|---|---|---|---|---|---|
| Hillsborough County (Manchester) | 290 ft | $52 /ft | 8 GPM | Granite Bedrock Fractures |
|
| Rockingham County | 270 ft | $50 /ft | 9 GPM | Bedrock / Stratified Drift |
💰 Estimated Turnkey Cost Itemization in New Hampshire
Component-by-component breakdown for a standard residential water well (285 ft average).
| System Component | Specification in New Hampshire | Unit Cost | Estimated Subtotal |
|---|---|---|---|
| Borehole Drilling & Sanitary Casing | 285 ft depth with standard 6" PVC/Steel Casing & Drive Shoe | $52 /ft | $14,820 USD |
| Submersible Pump & Drop Pipe | 1.0 HP – 1.5 HP Stainless Submersible Pump with 12-gauge electrical drop cable | Turnkey Pump Unit | $2,250 USD |
| Pressure Tank & Control Switch | 40-gallon Captive Air Pressure Tank, 40/60 PSI Pressure Switch & Gauge | Standard Assembly | $1,200 USD |
| State Permits, Sanitary Grouting & Lab Water Testing | Mandatory New Hampshire Department of Environmental Services (NHDES) permit, bentonite surface seal, and EPA drinking panel | State Fee + Lab | $600 USD |
| TOTAL ESTIMATED TURNKEY INVESTMENT | Includes excavation, drilling, plumbing hookup, and water inspection | $16,200 USD | |
New Hampshire Aquifers & Subsurface Geology
Granite, metamorphic gneiss and schist with low primary porosity (fracture dependent)
Water Quality & Recommended Filtration
⚖️ New Hampshire Well Drilling Regulations & Legal Setbacks
Calculate Drilling Cost in New Hampshire
Pre-loaded with New Hampshire median depth (285 ft) and average cost ($52/ft).
Frequently Asked Questions: Drilling Wells in New Hampshire
1. How deep do you usually have to drill for water in New Hampshire?
Across New Hampshire, the median residential water well is drilled to 285 feet. However, shallow alluvial wells can hit water as high as 80 feet, while deep bedrock or limestone aquifer wells may require drilling down to 650 feet to reach sufficient pressure and yield.
2. How much does a complete water well cost in New Hampshire?
On average, homeowners in New Hampshire invest $16,200 USD for a complete turnkey system. Drilling alone costs $52 per foot (ranging $38–$85/ft), while submersible pumps, pressure tanks, state permit fees ($150), and electrical hookups comprise the remaining balance.
3. What is the required setback from septic tanks in New Hampshire?
State health mandates overseen by the New Hampshire Department of Environmental Services (NHDES) require a minimum separation distance of 75 feet from any septic tank, leach field, or potential contamination source, plus at least 25 feet from adjacent property boundaries.
4. What is the groundwater quality like in New Hampshire?
Wells in New Hampshire typically yield water with a hardness reading around 85 PPM and an average pH of 6.6. Key minerals present in natural groundwater include Radon (Water & Air), Arsenic, Uranium, Iron. The recommended standard filtration configuration is: Radon Bubble Aeration System + Arsenic Filter.
🗺️ Neighboring & Regional Groundwater Guides
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