Well Driller License Requirements in California

Everything you need to know about getting your well driller license in California. A state license is required.

How to Get Your Well Driller License in California

Meet Basic Requirements

Be at least 18 years old with a valid ID. Pass a background check.

Complete Education

High school diploma or GED; geology or hydrology coursework preferred

Gain 3 Years of Experience

Minimum 3 years of well drilling experience under a licensed well driller.

Complete Apprenticeship

Complete 6,000 hours of apprenticeship training.

Pass the Well Driller Certification Exam

Obtain Insurance & Bonding

Secure General Liability, Workers Compensation, Pollution Liability insurance and a $14,000 surety bond.

Submit Application

Apply to the California Contractors State License Board (CSLB). Pay the application and license fees.

Requirements Overview

Age Requirement	18+ years old
Experience	Minimum 3 years of well drilling experience under a licensed well driller.
Education	High school diploma or GED; geology or hydrology coursework preferred
Apprenticeship	6,000 hours required
Background Check	Required

Fee Breakdown

Application Fee $140

License Fee $280

Exam Fee $245

Total Initial Cost $665

Renewal Fee (every 2 yrs) $210

Exam Information

Exam Name: Well Driller Certification Exam
Exam Provider: National Ground Water Association
Exam Fee: $245

Insurance & Bonding

Insurance Requirements

General LiabilityWorkers CompensationPollution Liability

Minimum Coverage:$500,000 per occurrence / $1,000,000 aggregate

Surety Bond

A surety bond of $14,000 is required.

Continuing Education

Hours Required: 12 hours
Period: Every 2 years

Reciprocity & Portability

California has license reciprocity agreements with the following states. This may allow you to transfer or expedite your license.

Arizona Louisiana Nevada North Carolina

Frequently Asked Questions

Do I need a license to work as a well driller in California?

Yes, California requires a state license for well drillers. The license is issued by the California Contractors State License Board (CSLB). Working without a proper license can result in fines and legal penalties.

How much does a well driller license cost in California?

The total initial cost for a well driller license in California is approximately $665, which includes the application fee ($140), license fee ($280), and exam fee ($245). Renewal costs $210 every 2 years. You will also need a $14,000 surety bond.

What exam do I need to pass for a well driller license in California?

You must pass the Well Driller Certification Exam, administered by National Ground Water Association. The exam fee is $245.

How much experience do I need to become a licensed well driller in California?

Minimum 3 years of well drilling experience under a licensed well driller. An apprenticeship of 6,000 hours is also required.

Can I use my well driller license from another state in California?

California has reciprocity or endorsement agreements with select states, which may allow you to waive the trade exam. However, you will typically still need to pass the state business and law exam, submit an application, and meet all other requirements. Contact the California Contractors State License Board (CSLB) for specific details about transferring your license.