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California Geothermal Well Driller



The California Geothermal Well Driller is a $100,000.00 bond. This bond is available in 1 year term.

"Geothermal heat exchange well" means any uncased artificial excavation, by any method, that uses the heat exchange capacity of the earth for heating and cooling, in which excavation the ambient ground temperature is 30 degrees Celsius (86 degrees Fahrenheit) or less, and which excavation uses a closed loop fluid system to prevent the discharge or escape of its fluid into surounding aquifiers or other geologic formations. Geothermal heat exchange wells include ground source heat pump wells.


A geothermal production well produces fluid heated by the natural heat of the earth. Geothermal fluids may be steam or hot water and in California have total dissolved solid concentrations of up to 250,000 parts per million (about seven times above sea water). Very hot geothermal fluids may be used for projects such as space heating, aquaculture, snow melting, food processing, dehydration, and hot tubs and spas.



Ashton Agency has a 99% approval rate and offers the California Geothermal Well Driller Bond required for all well drillers. We offer the most competitive prices so let us save you money!

Who needs the Geothermal Well Driller Bond?

Any person who acquires the ownership or operation of any well or wells, whether by purchase, transfer, assignment, conveyance, exchange, or otherwise, shall, within 30 days after acquiring the well or wells, file with the supervisor an individual indemnity bond in the sum of twenty-five thousand dollars ($25,000) for each well acquired, or a blanket indemnity bond in the sum of one hundred thousand dollars ($100,000) for any number of wells acquired. The bond shall be stated in substantially the language set forth in Section 3725.

What is the Geothermal Well Driller Bond?

The geothermal well driller bond protects the party requesting the surety bond, the Obligee, against any financial losses as a result of poor financial choices, damages, unethical decisions, or a failure to adhere to state and local laws on the part of you, the Principal. By obtaining your registration bond, you are telling the Obligee that you can be trusted and that you stand by your business decisions.

"Wells" mean any well for the discovery of geothermal resources or any well on lands producing geothermal resources or reasonably presumed to contain geothermal resources, or any special well, converted producing well or reactivated or converted abandoned well employed for re-injecting geothermal resources or the residue thereof. 

Get bonded within one business day!  

Only Ashton Agency can provide you with:

  • The lowest price for your bond!

  • Quickest turnaround time.

  • The ability to meet or beat any competitor's pricing.

Many companies write geothermal well driller bonds, but by contacting the Ashton Agency, you can be sure you'll be getting the best price available, not to mention our stellar customer service and insider knowledge of the industry.  We've been helping people get bonded for more than 45 years.  Let us put that experience to work for you today!  

Call us now at (800) 452-2663 for an application.  All you need to do is mail, fax, or email it to us with your payment, and we’ll mail the bond to you the same day.  We can assist you over the phone to ensure you receive your bond quickly and easily!

Don’t have time to speak on the phone? Please fill out our easy online application and fax to (503) 253-1353.  We can either call you to process a credit card payment or process a bank draft with a faxed check. We can get you started right away!


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