Michigan Well Data › St. Clair County
St. Clair County, Michigan: well depth, water level & drilling cost
✓ 15,077 Wellogic records · verified 2026-06-29
How deep are wells in St. Clair County, Michigan?
The median drilled well depth in St. Clair County is 107 ft, based on 15,034 wells with recorded depths in the state Wellogic database. Half of all wells fall between 73 ft and 134 ft; 90% are shallower than 162 ft. Wells drilled since 2016 have a median depth of 103 ft.
How much does it cost to drill a well in St. Clair County?
Applying published per-foot rates to the local median depth of 103 ft: drilling and casing alone typically runs $2,575–$6,695; a complete system including pump, pressure tank, and hookup typically runs $6,180–$10,300. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in St. Clair County?
The median static water level is 30 ft below ground surface (middle half of wells: 15 ft–40 ft), from 14,474 measurements.
How much water do wells in St. Clair County produce?
The median tested yield is 10 gpm (middle half: 6 gpm–15 gpm), from 14,522 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in St. Clair County?
Drillers by number of wells completed in this county since 2016, per filed well records (EGLE Wellogic); shown by registered well-driller number.
| Driller | Wells since 2016 |
|---|---|
| Lic. #74-1546 | 342 |
| Lic. #74-1881 | 337 |
| Lic. #74-1528 | 189 |
| Lic. #50-2268 | 114 |
| Lic. #74-1864 | 97 |
| Lic. #50-1719 | 80 |
| Lic. #74-1728 | 66 |
| Lic. #44-2007 | 64 |
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Median depth, water level, and yield for each ZIP code with recorded wells.
- Saint Clair (48079) — 1,425 wells, median 117 ft
- Smiths Creek (48074) — 1,321 wells, median 118 ft
- North (48049) — 1,179 wells, median 134 ft
- Columbus (48063) — 1,173 wells, median 89 ft
- Casco (48064) — 985 wells, median 109 ft
- Avoca (48006) — 957 wells, median 87 ft
- Allenton (48002) — 900 wells, median 67 ft
- East China (48054) — 890 wells, median 128 ft
- Goodells (48027) — 875 wells, median 76 ft
- 48041 — 827 wells, median 70 ft
- Yale (48097) — 774 wells, median 90 ft
- Capac (48014) — 624 wells, median 97 ft
- Emmett (48022) — 580 wells, median 66 ft
- Marine City (48039) — 528 wells, median 136 ft
- Fort Gratiot (48059) — 509 wells, median 118 ft
- Jeddo (48032) — 489 wells, median 124 ft
- Fair Haven (48023) — 235 wells, median 115 ft
- Port Huron (48060) — 145 wells, median 118 ft
Method: medians computed from Wellogic records (water-supply wells only (household, irrigation, industrial, Type I/II/III public supply) — heat-pump, test and unclassified 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.