San Joaquin County · CA
Wells in San Joaquin County
30,021 recorded wells, 20,632 with verified depth. Here's what the drilling records say and what the permit takes.
Depth, from the records
Eight of ten wells in San Joaquin County finished between 40 and 397 feet. Budget to the deep end; celebrate the shallow one.
Median reported yield: 200 gpm
Who drills around here
| Contractor (CA statewide) | Wells | Median depth |
|---|---|---|
| MEL MEYER | 107,662 | 148 ft |
| GREGG DRILLING & TESTING INC | 15,277 | 30 ft |
| WEEKS DRILLING AND PUMP CO | 14,978 | 153 ft |
| PETERS DRILLING AND PUMP SERVICE | 13,258 | 275 ft |
| GARY C TANKO WELL DRILLING INC | 12,674 | 225 ft |
| CASCADE DRILLING INC - CALIFORNIA | 11,333 | 40 ft |
| JOHNSON DRILLING CO | 11,184 | 230 ft |
| J & H DRILLING CO INC | 9,798 | 40 ft |
The permit in San Joaquin County
Local Enforcing Agency + DWR OSWCR
Water Code §13801; Bulletin 74
- Instrument
- permit
- Fee
- Call to confirm
- Who files
- Driller or owner may file
- Timeline
- Varies
Confirm current fee with authority
Before the rig arrives
- Confirm parcel allows a private well (vs required public water connection).
- Select a licensed well contractor; obtain owner authorization as required.
- File permit with Local Enforcing Agency + DWR OSWCR (PDF/email/mail — WellMap prepares the packet; lawful submitter files).
- Do not drill until authorization is issued (or notification accepted, per regime).
After drilling: DWR Well Completion Report (OSWCR) within 30 days → Local Enforcing Agency + DWR OSWCR · filing link ↗
Forms: CA well application · DWR Well Completion Report (OSWCR)
WellMap prepares estimate-backed quote packets and dual-party approvals. It does not issue permits and never auto-submits to government systems. The licensed driller (and/or owner where required by law) is the submitter of record. Verified 2026-07-14.