Connecticut Well Data › Southeastern Connecticut Planning Region
Southeastern Connecticut Planning Region, Connecticut: well depth, water level & drilling cost
✓ 1,089 DCP + USGS records · verified 2026-10-12
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How deep are wells in Southeastern Connecticut Planning Region, Connecticut?
The median drilled well depth in Southeastern Connecticut Planning Region is 265 ft, based on 1,089 wells with recorded depths in the state DCP + USGS database. Half of all wells fall between 120 ft and 400 ft; 90% are shallower than 532 ft. Wells drilled since 2016 have a median depth of 340 ft.
How much does it cost to drill a well in Southeastern Connecticut Planning Region?
Applying published per-foot rates to the local median depth of 340 ft: drilling and casing alone typically runs $8,500–$22,100; a complete system including pump, pressure tank, and hookup typically runs $20,400–$34,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Southeastern Connecticut Planning Region?
The median static water level is 20 ft below ground surface (middle half of wells: 15 ft–35 ft), from 715 measurements.
How much water do wells in Southeastern Connecticut Planning Region produce?
The median tested yield is 8 gpm (middle half: 4 gpm–10 gpm), from 731 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Southeastern Connecticut Planning Region?
| Driller | Wells since 2016 |
|---|---|
| Dalmik Well Drilling | 259 |
| LaFramboise Well Drilling | 161 |
| Chowanec Well Drilling, LLC | 53 |
| Chowanec Well Drilling | 52 |
| Dufford | 41 |
| Sima Drilling Company | 35 |
| CHOWANEC WELL DRILLING LLC | 31 |
| CONNECTICUT WELLS/GEOTHERMAL SERVICES, INC. | 19 |
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Well records by ZIP code in Southeastern Connecticut Planning Region
Median depth, water level, and yield for each ZIP code with recorded wells.
- Griswold (06351) — 118 wells, median 280 ft
- North Stonington (06359) — 86 wells, median 320 ft
- Colchester (06415) — 82 wells, median 260 ft
- Lebanon (06249) — 65 wells, median 300 ft
- Ledyard (06339) — 57 wells, median 300 ft
- Preston (06365) — 56 wells, median 240 ft
Method: medians computed from DCP + USGS records (USGS NWIS groundwater inventory, water-supply wells only (monitoring wells, test holes and injection wells excluded), and only wells carrying a measured depth). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.