New Hampshire Well Data › Sullivan County
Sullivan County, New Hampshire: well depth, water level & drilling cost
✓ 3,395 NHDES records · verified 2026-10-19
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How deep are wells in Sullivan County, New Hampshire?
The median drilled well depth in Sullivan County is 360 ft, based on 3,394 wells with recorded depths in the state NHDES database. Half of all wells fall between 225 ft and 500 ft; 90% are shallower than 600 ft. Wells drilled since 2016 have a median depth of 420 ft.
How much does it cost to drill a well in Sullivan County?
Applying published per-foot rates to the local median depth of 420 ft: drilling and casing alone typically runs $10,500–$27,300; a complete system including pump, pressure tank, and hookup typically runs $25,200–$42,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Sullivan County?
The median static water level is 20 ft below ground surface (middle half of wells: 12 ft–40 ft), from 2,060 measurements.
How much water do wells in Sullivan County produce?
The median tested yield is 6 gpm (middle half: 3 gpm–15 gpm), from 3,292 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
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Well records by ZIP code in Sullivan County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Sunapee (03782) — 417 wells, median 395 ft
- Washington (03280) — 411 wells, median 300 ft
- Claremont (03743) — 321 wells, median 305 ft
- Georges Mills (03751) — 297 wells, median 450 ft
- Lempster (03605) — 287 wells, median 305 ft
- Newport (03773) — 264 wells, median 400 ft
- Grantham (03753) — 247 wells, median 400 ft
- Cornish (03745) — 242 wells, median 405 ft
- Guild (03754) — 194 wells, median 405 ft
- Goshen (03752) — 164 wells, median 413 ft
- Plainfield (03781) — 164 wells, median 325 ft
- Charlestown (03603) — 159 wells, median 300 ft
- Springfield (03284) — 102 wells, median 425 ft
- Cornish Flat (03746) — 90 wells, median 325 ft
- Acworth (03601) — 88 wells, median 293 ft
- Meriden (03770) — 66 wells, median 265 ft
- South Acworth (03607) — 60 wells, median 300 ft
Method: medians computed from NHDES records (NHDES Water Well Inventory, water-supply wells only (test/exploration and closed-loop geothermal wells excluded); depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.