California Well Permit Guide: What You Need Before Drilling
A complete guide to water well permits in California. Learn about DWR requirements, county permit types, typical timelines, fees, and how to find a licensed driller.
Key Takeaways
- Permits required for new wells, deepening, and destruction—drilling without one is illegal
- County environmental health or water agencies issue permits; DWR sets standards
- Typical timeline 2–8 weeks for new wells; fees $200–$1,000 vary by county
- C-57 contractors typically handle permit applications on your behalf
Before a single foot of drilling begins, California requires permits for new wells, well deepening, and well destruction. Understanding the permit process upfront can save time, avoid costly delays, and ensure your project stays compliant. Here's what you need to know.
Why Permits Matter
California's well permitting system protects groundwater quality and quantity. The Department of Water Resources (DWR) sets statewide construction standards, while county environmental health departments or water agencies issue permits and enforce local requirements. Drilling without a permit is illegal and can result in fines, well condemnation, or difficulty selling your property.
Permit Types
New Well Construction
A permit is required before drilling any new water well. The application typically includes:
- Property address and parcel information
- Proposed well location (with setbacks from septic, property lines, etc.)
- Intended use (domestic, irrigation, livestock, etc.)
- Well design (depth, diameter, casing type)
- Contractor's C-57 license number
Well Deepening
If your existing well has gone dry or produces insufficient water, deepening requires a new permit. The process is similar to new construction but references the existing well. Some counties have streamlined applications for deepening projects.
Well Destruction (Abandonment)
Properly sealing an abandoned well is required by law. Unsealed wells can contaminate aquifers or create safety hazards. A destruction permit ensures the well is sealed according to DWR standards. Only licensed C-57 contractors may perform this work.
Typical Timeline and Fees
| Permit Type | Typical Timeline | Fee Range |
|---|---|---|
| New well | 2–8 weeks | $200–$1,000 |
| Deepening | 1–4 weeks | $150–$600 |
| Destruction | 1–3 weeks | $100–$400 |
Timelines vary by county workload and whether environmental review (e.g., CEQA, SGMA) is required. In critically over-drafted basins, additional water availability assessments may be needed.
County-by-County Differences
Permit requirements and fees vary significantly across California's 58 counties. For example:
- Rural counties may have simpler processes and lower fees
- Urban or groundwater-stressed areas may require water availability studies, SGMA compliance, or extended review
- Coastal counties may have additional environmental review for near-shore wells
Use our county directory to find permit information for your area. Each county page includes permit details, typical well depths, and links to licensed drillers who serve that region.
What Your Contractor Handles
A licensed C-57 well drilling contractor typically:
- Submits the permit application on your behalf
- Ensures the well design meets DWR and county standards
- Schedules required inspections
- Files the well completion report with the county and DWR
When getting quotes, ask whether permit fees and application handling are included or separate.
Find a Licensed Driller
Every well drilling project in California must be performed by a contractor holding an active C-57 Well Drilling Contractor license. Use our California Well Driller Directory to search by county, city, or service area. All listings include license verification and bond status from the CSLB.