Minnesota Well Data › Olmsted County
Olmsted County, Minnesota: well depth, water level & drilling cost
✓ 5,227 CWI records · verified 2026-09-28
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How deep are wells in Olmsted County, Minnesota?
The median drilled well depth in Olmsted County is 338 ft, based on 5,175 wells with recorded depths in the state CWI database. Half of all wells fall between 220 ft and 415 ft; 90% are shallower than 500 ft. Wells drilled since 2016 have a median depth of 402 ft.
How much does it cost to drill a well in Olmsted County?
Applying published per-foot rates to the local median depth of 402 ft: drilling and casing alone typically runs $10,050–$26,130; a complete system including pump, pressure tank, and hookup typically runs $24,120–$40,200. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Olmsted County?
The median static water level is 93 ft below ground surface (middle half of wells: 20 ft–177 ft), from 4,253 measurements.
How much water do wells in Olmsted County produce?
The median tested yield is 20 gpm (middle half: 15 gpm–30 gpm), from 2,456 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Olmsted County?
Drillers by number of wells completed in this county since 2016, per filed well records (Minnesota County Well Index).
| Driller | Wells since 2016 |
|---|---|
| UNDERDAHL, N | 65 |
| HANSON, B | 43 |
| PETERSON, S | 36 |
| UNDERDAHL, N. | 27 |
| GILSDORF, M | 24 |
| PETERSON, S. | 21 |
| WILLIAMS, J | 13 |
| SEE REMARKS | 13 |
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Well records by ZIP code in Olmsted County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Rochester (55904) — 936 wells, median 280 ft
- Rochester (55902) — 594 wells, median 265 ft
- Oronoco (55960) — 534 wells, median 340 ft
- Pine Island (55963) — 497 wells, median 340 ft
- Byron (55920) — 491 wells, median 303 ft
- Stewartville (55976) — 464 wells, median 371 ft
- Rochester (55901) — 462 wells, median 343 ft
- Rochester (55906) — 419 wells, median 395 ft
- Eyota (55934) — 351 wells, median 350 ft
- Rochester (55903) — 299 wells, median 325 ft
- Dover (55929) — 150 wells, median 352 ft
- Elgin (55932) — 141 wells, median 393 ft
Method: medians computed from CWI records (water-supply wells only (domestic, irrigation, public/community supply, commercial, industrial) — monitoring, observation, test, injection, heat-pump and environmental boreholes 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.