Best Licensed Well Drilling Contractors in Rio Vista, CA
3 well drilling companies registered in Rio Vista hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by workers' compensation cover and years licensed.
- 7 active C-57 well drilling licenses in Solano County; 3 registered in Rio Vista
- 0 of Rio Vista's 3 licenses (0.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Rio Vista: 14 years
- Longest Rio Vista licensure: since 1994
- 0 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1994
- Phone
- (916) 777-7014
- Verified
- August 17, 2026
- Licensed since
- 2011
- Phone
- (707) 639-7709
- Verified
- August 17, 2026
- Licensed since
- 2018
- Phone
- (707) 689-0645
Compare the top 3 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Carter Drilling | #683859 | Exempt or none on file | 1994 |
| Confluence Technical Services Inc. DBA Confluence | #967930 | Exempt or none on file | 2011 |
| D H Well Drilling And Service Inc. | #1037203 | Exempt or none on file | 2018 |
Solano County well drilling licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 7 active C-57 well drilling licenses in Solano County, 3 of them registered in Rio Vista. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Rio Vista license has been held 14 years, and the longest-standing one dates to 1994. 0 of Rio Vista's 3 licenses (0.0%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 7 of the county's 7 licenses carry the same $25,000 bond California sets by statute. 0 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
Well Drilling Contractors in Rio Vista: common questions
How many licensed well drilling contractors are there in Rio Vista?
3 active C-57 well drilling licenses are registered in Rio Vista, out of 7 across Solano County. 3 Rio Vista-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license well drilling contractors?
Yes. California licenses contractors by classification, and C-57 is the CSLB classification that authorises this work. 3 active C-57 well drilling licenses are registered in Rio Vista and 7 across Solano County, the longest-standing issued in 1994. Only CLEAR, unexpired licenses appear here.
How do I check a well drilling contractor's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 0 of Rio Vista's 3 currently carry. 0 Solano County licenses expire within 90 days.
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