Some of of Credentials Include:

Excavator removing an old septic tank in Sunol, California. We have the contractors license for it.

Professional Engineer

Our on-staff engineer, Tim Johnston, P. E. possesses California Board for Professional Engineers License number 66172. Click to check the California Professional Engineer's Board Website

Construction Contractor

Acorn Onsite, Inc. possesses California Contractor's State License Board, license number 499418. Click to check the California Contractor's State License Board website.

Maintenance Provider

For the regions we provide maintenance we posses the applicable county pumping licenses, manufacturer maintenance certifications, and the expert knowledge to properly maintain the septic system.

Satisfied Customers

A referral from a satisfied customer is a credential all in its own. We encourage prospective customers to speak with a customer we have done work for before.

Industry Knowledge and Longevity

We continually keep current with new technologies and ideas as they develop. We use new ideas as applicable. We are here now, and will be here in the future. Let us know how we can help you now or give us a call in ten years and we can help you then. 


We have applicable insurance for all aspects of the project we are involved in. Some of the insurance coverage we have includes errors and omissions, general liability, worker's compensation, automotive and equipment.

We are happy to provide evidence of our insurance to potential and current customers.