GroundRosterWell Drilling: Licensed Well Drillers Based in Petaluma, CA
5 of the 10 licensed listings based in Petaluma hold a California license class that covers this work: they are licensed to bore, case, complete, and plug water wells. Not every well and septic professional is; see all Petaluma listings for the full roster.
"Based in" is the city on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
Northbay Well And Pump LLCLicensed
Northbay Well & Pump ServiceLicensed
Oasis Pump & DrillingLicensed
Anthony Joseph AdiegoLicensed
What does well drilling cost?
A new residential water well typically runs $5,500 to $35,000 depending on depth, geology, and pump system; the national average is around $9,000 to $16,000 for a complete system. Depth assumptions drive most of the price difference, so get multiple quotes and ask each driller what depth they are pricing.
How deep will my well need to be?
Most residential wells land between 100 and 500 feet, but it is entirely local; the water table and geology on your road decide it. Drillers who work your area know the nearby well logs; ask what depths they have hit on neighboring properties.
Before you hire
Confirm the license number on this page is still active with California, ask for proof of insurance, and get at least three written quotes; pricing on this work varies widely by site conditions.