Welltest Inc
Services
Services estimated based on license classification. Claimed businesses can customize their service list.
About the C57 — Well Drilling License
The C-57 Well Drilling license covers the drilling, maintenance, and repair of water wells, monitoring wells, and related systems. In rural areas of the Sacramento Valley, wells provide the primary water supply for homes, farms, and businesses. C-57 contractors drill wells, install pumps and pressure tanks, perform well rehabilitation, and handle well abandonment when required.
About the D04 — D04 License
A D04 (D04) licensed contractor in California is authorized to perform specialized work in their trade area. California's Contractors State License Board (CSLB) requires contractors in this classification to meet education, experience, and examination requirements before receiving their license. When hiring a D04 contractor, always verify their license is active and in CLEAR status, confirm they carry adequate insurance, and get a detailed written contract before work begins. Licensed contractors must maintain a $25,000 contractor bond and comply with all applicable building codes and regulations.
About the D21 — D21 License
A D21 (D21) licensed contractor in California is authorized to perform specialized work in their trade area. California's Contractors State License Board (CSLB) requires contractors in this classification to meet education, experience, and examination requirements before receiving their license. When hiring a D21 contractor, always verify their license is active and in CLEAR status, confirm they carry adequate insurance, and get a detailed written contract before work begins. Licensed contractors must maintain a $25,000 contractor bond and comply with all applicable building codes and regulations.
About the D56 — D56 License
A D56 (D56) licensed contractor in California is authorized to perform specialized work in their trade area. California's Contractors State License Board (CSLB) requires contractors in this classification to meet education, experience, and examination requirements before receiving their license. When hiring a D56 contractor, always verify their license is active and in CLEAR status, confirm they carry adequate insurance, and get a detailed written contract before work begins. Licensed contractors must maintain a $25,000 contractor bond and comply with all applicable building codes and regulations.
About the HAZ — Hazardous Substance Removal License
The HAZ (Hazardous Substance Removal) license covers the removal, remediation, and disposal of hazardous materials including lead paint, contaminated soil, underground storage tanks, and other environmental contaminants. This is a critical environmental and public health trade regulated by multiple state and federal agencies including Cal/EPA, DTSC, and Cal/OSHA. HAZ contractors must follow strict containment, handling, and disposal protocols to protect workers, the public, and the environment. California has some of the most stringent hazardous material regulations in the nation. When hiring a HAZ contractor, verify all required certifications, ensure they have experience with your specific type of contamination, and confirm they use licensed disposal facilities. Documentation and proper chain of custody for hazardous materials are essential.
💡 Tips for Hiring a Well Drilling Contractor
- Ask about expected well depth based on local groundwater conditions
- Discuss pump sizing to match your water demand needs
- Verify they comply with Department of Water Resources well construction standards
- Always verify the contractor license is active on the CSLB website
- Get at least three written estimates before making a decision
✅ Verify This License
Always verify contractor licensing directly with the Contractors State License Board (CSLB) before hiring. You can look up license #1100880 to confirm it is active and check for any complaints or disciplinary actions.
Check on CSLB.ca.gov →🏢 Are you Welltest Inc?
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Claim This Page →Frequently Asked Questions
What does a C-57 Well Drilling license cover?
A C-57 license covers drilling, construction, maintenance, and repair of water wells and monitoring wells, including pump installation and pressure tank systems.
How deep are wells in the Sacramento Valley?
Well depth varies from 100 to 500+ feet depending on location and groundwater conditions.
Do I need a licensed D04 contractor in California?
Yes. California law requires a licensed contractor for any d04 work valued at $500 or more. Licensed contractors must pass exams, maintain bonding, and carry insurance. Hiring unlicensed contractors puts you at risk.
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